Table 3.7a. Space Heating by Census Region and Climate Zone, 

 Million U.S. Households, 1993

Space Heating

Characteristics

RSE Column Factor:

Total

Census Region Climate Zone

RSE

Row

Factors

Northeast Midwest South West

Fewer than

2,000 CDD and --

More

than

2,000

CDD

and

Fewer

than

4,000

HDD

More

than

7,000

HDD

5,500

to

7,000

HDD

4,000

to

5,499

HDD

Fewer

than

4,000

HDD

0.5 0.9 1.1 0.8 0.8 1.6 1.3 1.2 1.2 1.1

Total ................................................. 96.6 19.5 23.3 33.5 20.4 8.7 26.5 22.5 17.8 21.2 7.7

Main Heating Fuel and Equipment

 Natural Gas .................................... 50.8 9.4 16.8 12.7 11.9 4.3 17.5 10.1 10.2 8.7 7.5

 Central Warm-Air Furnace ........... 34.9 4.7 13.4 8.7 8.2 3.2 12.7 6.5 6.3 6.3 9.1

 For One Housing Unit ................ 34.1 4.4 13.1 8.6 8.0 3.1 12.4 6.2 6.3 6.2 9.4

 For Two or More Units ............... 0.9 0.4 0.3 Q Q Q 0.3 0.3 Q Q 30.0

 Steam or Hot-Water System ........ 8.7 4.3 2.9 0.7 0.8 1.0 4.2 3.0 0.4 Q 15.0

 For One Housing Unit ................ 5.1 2.7 1.6 0.4 0.5 0.6 2.7 1.5 0.2 Q 18.6

 For Two or More Units ............... 3.6 1.6 1.3 0.4 0.3 0.4 1.6 1.5 Q Q 20.6

 Floor, Wall, or 

 Pipeless Furnace ......................... 4.3 0.2 Q 1.4 2.6 Q 0.3 0.3 2.7 1.0 19.2

 Room Heater/Other ...................... 2.8 0.2 0.3 1.9 0.4 Q 0.3 0.3 0.8 1.3 24.6

 Electricity ........................................ 25.3 1.9 3.0 14.7 5.7 0.9 4.0 6.0 4.8 9.5 10.7

 Built-In Electric Units .................... 7.0 1.2 1.4 1.9 2.6 0.6 2.1 2.1 1.5 0.7 16.7

 Central Warm-Air Furnace ........... 9.5 0.1 1.1 6.3 2.0 0.2 1.1 1.2 1.7 5.2 19.4

 For One Housing Unit ................ 9.3 0.1 1.1 6.2 1.9 0.2 1.1 1.2 1.7 5.1 19.6

 Heat Pump ................................... 7.5 0.5 0.4 5.9 0.7 Q 0.7 2.4 1.2 3.2 18.5

 Other ............................................ 1.3 Q Q 0.6 0.5 Q Q 0.2 0.4 0.5 23.7

 Fuel Oil ........................................... 10.2 7.0 1.3 1.4 0.4 1.9 3.3 4.5 0.4 0.2 17.4

 Steam or Hot-Water System ........ 5.3 4.7 0.2 0.4 Q 0.6 1.9 2.8 Q Q 16.4

 For One Housing Unit ................ 3.5 2.9 0.2 0.3 Q 0.6 1.6 1.4 Q Q 19.6

 For Two or More Units ............... 1.8 1.8 Q Q Q Q 0.3 1.4 Q Q 15.6

 Central Warm-Air Furnace ........... 4.5 2.2 1.0 0.9 Q 1.2 1.3 1.5 0.3 Q 17.3

 Other ............................................ 0.4 0.1 Q Q Q Q Q Q Q Q 40.4

 Wood .............................................. 3.1 0.5 0.4 1.2 1.1 0.7 0.3 0.9 0.8 0.5 17.0

 Heating Stove ............................... 2.4 0.4 0.2 1.0 0.8 0.5 0.2 0.7 0.6 0.3 19.3

 Other ............................................ 0.7 Q 0.2 0.2 0.3 0.2 Q 0.2 0.2 0.1 29.4

 LPG ................................................ 4.8 0.2 1.8 2.4 0.4 0.7 1.0 0.7 0.9 1.4 26.2

 Central Warm-Air Furnace ........... 3.1 0.1 1.5 1.2 0.3 0.6 0.8 0.6 0.4 0.7 28.0

 Room Heater ................................ 1.1 Q Q 1.0 Q Q Q Q Q 0.6 30.4

 Other ............................................ 0.6 Q Q 0.3 Q Q Q Q 0.2 Q 35.1

 Kerosene ........................................ 1.0 0.3 Q 0.6 Q 0.1 Q Q 0.3 0.2 26.5

 Other .............................................. 0.4 Q Q Q 0.1 0.1 Q Q Q Q 30.6

 None ............................................... 0.9 Q Q Q 0.7 Q Q Q 0.3 0.6 23.5

Amount of Heat Provided

by Main Heating Equipment

 All or Almost All .............................. 87.3 17.9 22.3 30.2 16.9 7.7 24.9 20.6 15.2 18.8 5.0

 About Three-Fourths ...................... 5.4 1.0 0.6 2.0 1.8 0.7 1.0 1.2 1.4 1.2 14.5

 Closer to One-Half ......................... 3.1 0.6 0.4 1.1 0.9 0.3 0.6 0.6 0.9 0.7 16.8

 No Main Equipment ........................ 0.9 Q Q Q 0.7 Q Q Q 0.3 0.6 23.5

Age of Main

Heating Equipment

 Less than 2 Years .......................... 9.0 1.7 2.1 3.8 1.4 1.0 2.2 1.8 1.6 2.4 12.1

 2 to 4 Years .................................... 10.6 1.8 2.5 4.6 1.8 1.2 2.8 1.9 2.1 2.6 11.3

 5 to 9 Years .................................... 17.7 2.9 4.2 7.5 3.2 1.5 4.4 4.5 2.7 4.7 9.6

 10 to 19 Years ................................ 21.6 4.0 5.4 7.6 4.5 2.3 5.8 5.1 3.2 5.2 7.3

 20 Years or More ........................... 21.5 5.2 5.6 5.0 5.7 1.9 7.0 4.9 5.1 2.7 8.0

 Don’t Know ..................................... 15.3 3.9 3.5 4.8 3.1 0.7 4.3 4.3 2.8 3.1 9.8

 No Main Equipment ........................ 0.9 Q Q Q 0.7 Q Q Q 0.3 0.6 23.5

See footnotes at end of table.

62 Energy Information Administration/Housing Characteristrics 1993
Table 3.7b. Space Heating by Census Region and Climate Zone, 

 Percent of Households, 1993

Space Heating

Characteristics

RSE Column Factor:

Total

Census Region Climate Zone

RSE

Row

Factors

Northeast Midwest South West

Fewer than

2,000 CDD and --

More

than

2,000

CDD

and

Fewer

than

4,000

HDD

More

than

7,000

HDD

5,500

to

7,000

HDD

4,000

to

5,499

HDD

Fewer

than

4,000

HDD

0.5 1.0 1.2 0.9 0.8 1.4 1.2 1.1 1.0 1.1

Total ................................................. 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 0.0

Main Heating Fuel and Equipment

 Natural Gas .................................... 52.6 48.3 71.9 37.9 58.6 49.3 66.2 44.9 57.2 41.1 5.8

 Central Warm-Air Furnace ........... 36.2 24.4 57.3 25.9 40.0 36.6 47.9 29.0 35.4 29.5 7.2

 For One Housing Unit ................ 35.3 22.4 56.0 25.8 39.5 35.3 46.7 27.6 35.3 29.0 7.5

 For Two or More Units ............... 0.9 2.0 1.3 Q Q Q 1.2 1.3 Q Q 29.8

 Steam or Hot-Water System ........ 9.0 22.1 12.6 2.1 3.8 11.2 16.0 13.5 2.0 Q 15.0

 For One Housing Unit ................ 5.3 13.7 6.8 1.1 2.4 6.8 10.1 6.8 1.2 Q 17.9

 For Two or More Units ............... 3.8 8.4 5.8 1.1 1.4 Q 5.9 6.6 Q Q 19.3

 Floor, Wall, or 

 Pipeless Furnace ......................... 4.4 0.9 Q 4.2 12.7 Q 1.1 1.3 15.1 4.6 19.0

 Room Heater/Other ...................... 2.9 1.0 1.4 5.7 2.1 Q 1.3 1.1 4.7 6.2 23.0

 Electricity ........................................ 26.2 9.9 12.8 43.9 28.1 10.9 15.2 26.6 27.2 45.0 9.4

 Built-In Electric Units .................... 7.2 6.0 6.1 5.5 12.6 7.2 8.1 9.5 8.2 3.1 16.4

 Central Warm-Air Furnace ........... 9.8 0.6 4.6 18.9 9.7 2.3 4.3 5.4 9.8 24.5 17.9

 For One Housing Unit ................ 9.6 0.6 4.6 18.5 9.4 2.3 4.3 5.2 9.8 23.8 18.1

 Heat Pump ................................... 7.8 2.7 1.9 17.6 3.4 Q 2.7 10.7 6.7 15.2 17.8

 Other ............................................ 1.4 Q Q 1.9 2.4 Q Q 1.0 2.5 2.2 23.4

 Fuel Oil ........................................... 10.6 36.1 5.8 4.3 2.0 21.6 12.5 19.9 2.0 1.0 16.9

 Steam or Hot-Water System ........ 5.5 24.4 1.0 1.1 Q 7.2 7.1 12.5 Q Q 16.5

 For One Housing Unit ................ 3.6 15.1 1.0 1.0 Q 6.6 5.9 6.1 Q Q 19.3

 For Two or More Units ............... 1.9 9.3 Q Q Q Q 1.2 6.4 Q Q 16.8

 Central Warm-Air Furnace ........... 4.7 11.1 4.5 2.8 Q 13.3 5.1 6.8 1.7 Q 16.3

 Other ............................................ 0.4 0.7 Q Q Q Q Q Q Q Q 36.8

 Wood .............................................. 3.2 2.3 1.7 3.5 5.4 7.8 1.2 3.8 4.4 2.3 17.7

 Heating Stove ............................... 2.5 1.9 1.0 2.9 4.0 6.0 0.9 3.1 3.5 1.6 20.2

 Other ............................................ 0.8 Q 0.7 0.6 1.4 1.9 Q 0.7 1.0 0.7 30.1

 LPG ................................................ 5.0 1.2 7.5 7.3 1.9 7.9 3.9 3.1 5.3 6.8 24.5

 Central Warm-Air Furnace ........... 3.2 0.8 6.5 3.5 1.4 6.5 3.2 2.6 2.4 3.2 26.4

 Room Heater ................................ 1.2 Q Q 2.9 Q Q Q Q 2.0 2.9 31.9

 Other ............................................ 0.6 Q Q 0.9 Q Q Q Q 1.0 Q 33.5

 Kerosene ........................................ 1.0 1.7 Q 1.7 Q 1.6 Q Q 1.9 1.1 27.3

 Other .............................................. 0.4 Q Q Q 0.3 0.8 Q Q Q Q 33.7

 None ............................................... 0.9 Q Q Q 3.3 Q Q Q 1.8 2.7 24.1

Amount of Heat Provided

by Main Heating Equipment

 All or Almost All .............................. 90.3 91.7 95.7 90.1 83.2 89.1 94.1 91.8 85.3 88.6 1.4

 About Three-Fourths ...................... 5.6 5.2 2.7 5.9 8.8 7.6 3.6 5.5 7.7 5.5 14.3

 Closer to One-Half ......................... 3.2 3.2 1.6 3.4 4.7 3.3 2.3 2.7 5.1 3.2 17.0

 No Main Equipment ........................ 0.9 Q Q Q 3.3 Q Q Q 1.8 2.7 24.1

Age of Main

Heating Equipment

 Less than 2 Years .......................... 9.3 8.5 9.2 11.4 6.8 12.0 8.3 7.8 9.2 11.2 10.4

 2 to 4 Years .................................... 11.0 9.2 10.7 13.7 8.6 14.0 10.4 8.7 11.7 12.4 9.5

 5 to 9 Years .................................... 18.3 14.7 17.9 22.5 15.5 17.2 16.6 20.0 15.0 21.9 7.3

 10 to 19 Years ................................ 22.4 20.8 23.0 22.8 22.3 27.0 21.8 22.8 17.8 24.5 5.1

 20 Years or More ........................... 22.2 26.5 24.2 14.8 28.0 21.3 26.5 21.7 28.6 12.6 6.4

 Don’t Know ..................................... 15.8 20.2 15.0 14.2 15.4 8.6 16.4 19.0 15.9 14.7 8.6

 No Main Equipment ........................ 0.9 Q Q Q 3.3 Q Q Q 1.8 2.7 24.1

See footnotes at end of table.

Energy Information Administration/Housing Characteristrics 1993 63
Table 3.7a. Space Heating by Census Region and Climate Zone, 

 Million U.S. Households, 1993 (Continued)

Space Heating

Characteristics

RSE Column Factor:

Total

Census Region Climate Zone

RSE

Row

Factors

Northeast Midwest South West

Fewer than

2,000 CDD and --

More

than

2,000

CDD

and

Fewer

than

4,000

HDD

More

than

7,000

HDD

5,500

to

7,000

HDD

4,000

to

5,499

HDD

Fewer

than

4,000

HDD

0.5 0.9 1.1 0.8 0.8 1.6 1.3 1.2 1.2 1.1

Secondary Heating Fuel and

Equipment

(more than one may apply)

 No ................................................... 60.8 13.8 15.9 19.5 11.6 5.2 18.6 13.8 10.3 12.9 5.7

 Yes ................................................. 35.9 5.7 7.4 14.0 8.7 3.5 7.9 8.7 7.5 8.3 7.7

 Natural Gas .................................. 4.1 0.3 0.7 1.8 1.2 0.3 0.6 0.5 1.3 1.2 19.8

 Fireplace .................................... 1.8 Q 0.4 0.6 0.7 0.2 0.3 0.1 0.5 0.6 22.1

 Room Heater .............................. 1.0 Q Q 0.6 Q Q Q Q 0.2 0.5 25.2

 Central Warm-Air Furnace ......... 0.6 Q 0.1 0.2 0.2 Q Q 0.2 0.2 Q 31.6

 Other Equipment ........................ 0.9 Q Q 0.4 0.3 Q 0.1 Q 0.4 0.1 33.3

 Electricity ...................................... 14.6 2.3 3.3 6.0 3.0 1.4 3.3 3.4 3.0 3.5 10.4

 Portable Heater .......................... 9.8 1.5 2.4 3.9 2.0 0.8 2.2 2.3 2.2 2.3 11.9

 Built-in Electric Units .................. 4.0 0.8 0.7 1.7 0.8 0.5 1.0 0.9 0.7 1.0 18.0

 Other Equipment ........................ 0.8 Q Q 0.3 0.3 Q Q Q 0.2 0.2 19.3

 Fuel Oil ......................................... 0.4 0.2 Q Q Q 0.1 Q Q Q Q 21.6

 Wood ............................................ 19.0 3.1 3.8 6.7 5.4 1.7 4.4 4.9 3.6 4.3 9.9

 Fireplace .................................... 15.9 2.2 3.3 5.9 4.5 1.0 3.6 4.0 3.2 4.1 10.7

 Heating Stove ............................. 3.4 1.0 0.7 0.9 0.9 0.7 1.0 1.0 0.4 0.3 15.8

 Other Equipment ........................ 0.2 Q Q Q Q Q Q Q Q Q 60.8

 LPG .............................................. 1.2 Q 0.2 0.8 0.2 0.2 0.1 0.2 0.5 0.4 29.7

 Kerosene ...................................... 2.6 0.4 0.9 1.3 Q 0.2 0.7 0.9 0.5 0.3 22.7

 Other ............................................ 0.4 Q Q Q 0.1 Q Q Q Q Q 47.5

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to totals. 

• See "Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 1993 Residential Energy Consumption Survey. 

(For specific titles of forms, see Appendix D.)

64 Energy Information Administration/Housing Characteristrics 1993
Table 3.7b. Space Heating by Census Region and Climate Zone, 

 Percent of Households, 1993 (Continued)

Space Heating

Characteristics

RSE Column Factor:

Total

Census Region Climate Zone

RSE

Row

Factors

Northeast Midwest South West

Fewer than

2,000 CDD and --

More

than

2,000

CDD

and

Fewer

than

4,000

HDD

More

than

7,000

HDD

5,500

to

7,000

HDD

4,000

to

5,499

HDD

Fewer

than

4,000

HDD

0.5 1.0 1.2 0.9 0.8 1.4 1.2 1.1 1.0 1.1

Secondary Heating Fuel and

Equipment

(more than one may apply)

 No ................................................... 62.9 70.8 68.2 58.1 57.1 59.7 70.2 61.4 57.8 61.0 3.5

 Yes ................................................. 37.1 29.2 31.8 41.9 42.9 40.3 29.8 38.6 42.2 39.0 5.9

 Natural Gas .................................. 4.2 1.7 3.1 5.3 6.1 4.0 2.4 2.3 7.4 5.9 18.9

 Fireplace .................................... 1.9 Q 1.5 1.9 3.6 2.5 1.3 0.6 2.9 2.8 22.1

 Room Heater .............................. 1.0 Q Q 1.9 Q Q Q Q 1.0 2.4 23.8

 Central Warm-Air Furnace ......... 0.6 Q 0.6 0.7 1.0 Q Q 0.9 1.3 Q 30.4

 Other Equipment ........................ 0.9 Q Q 1.1 1.5 Q 0.5 Q 2.5 0.6 32.5

 Electricity ...................................... 15.1 11.8 14.0 17.9 15.0 16.6 12.4 15.0 17.1 16.3 8.8

 Portable Heater .......................... 10.1 7.7 10.2 11.7 9.8 9.2 8.3 10.4 12.2 10.9 10.5

 Built-in Electric Units .................. 4.1 4.3 2.9 5.0 4.0 5.9 3.7 3.9 3.7 4.5 17.0

 Other Equipment ........................ 0.8 Q Q 1.0 1.6 Q Q Q 1.1 1.2 18.4

 Fuel Oil ......................................... 0.4 1.2 Q Q Q 1.5 Q Q Q Q 23.0

 Wood ............................................ 19.7 16.0 16.4 20.0 26.3 20.0 16.7 22.0 20.2 20.2 8.9

 Fireplace .................................... 16.5 11.2 14.1 17.6 22.3 11.7 13.5 17.9 18.0 19.3 9.7

 Heating Stove ............................. 3.6 5.2 2.8 2.7 4.2 8.3 3.8 4.6 2.2 1.3 15.4

 Other Equipment ........................ 0.2 Q Q Q Q Q Q Q Q Q 56.7

 LPG .............................................. 1.3 Q 0.8 2.4 1.0 1.8 0.3 0.7 2.6 1.8 28.9

 Kerosene ...................................... 2.7 2.0 3.8 3.8 Q 2.2 2.6 3.9 3.0 1.4 21.6

 Other ............................................ 0.4 Q Q Q 0.7 Q Q Q Q Q 43.4

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to totals. 

• See "Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 1993 Residential Energy Consumption Survey. 

(For specific titles of forms, see Appendix D.)

Energy Information Administration/Housing Characteristrics 1993 65
Table 3.8a. Space Heating by Year of Construction,

 Million U.S. Households, 1993

Space Heating

Characteristics

RSE Column Factor:

Total

Year of Construction

RSE

Row

Factors

1991

 to

19931

1988

 to

1990

1985

to

1987

1980

to

1984

1970

to

1979

1960

to

1969

1950

to

1959

1940

to

1949

1939

or

Before

0.4 1.5 1.3 1.5 1.1 0.9 0.9 1.0 1.2 0.8

Total ................................................. 96.6 4.5 4.7 5.5 8.5 18.1 15.0 13.1 6.9 20.4 5.3

Main Heating Fuel and Equipment

 Natural Gas .................................... 50.8 2.1 1.8 2.2 3.4 7.6 8.9 8.1 4.3 12.4 7.9

 Central Warm-Air Furnace ........... 34.9 2.0 1.6 2.0 3.0 5.9 6.2 5.5 2.4 6.4 9.1

 For One Housing Unit ................ 34.1 2.0 1.6 1.9 2.9 5.8 6.0 5.4 2.3 6.0 9.3

 For Two or More Units ............... 0.9 Q Q Q Q Q Q Q Q 0.4 39.3

 Steam or Hot-Water System ........ 8.7 Q 0.1 Q 0.3 1.0 1.8 0.9 0.7 3.6 21.0

 For One Housing Unit ................ 5.1 Q 0.1 Q 0.2 0.3 0.9 0.8 0.4 2.2 25.1

 For Two or More Units ............... 3.6 Q Q Q Q 0.7 0.9 Q 0.3 1.4 25.3

 Floor, Wall, or 

 Pipeless Furnace ......................... 4.3 Q Q Q 0.1 0.5 0.6 1.3 0.7 1.0 20.8

 Room Heater/Other ...................... 2.8 Q Q Q Q 0.2 0.3 0.4 0.5 1.4 23.9

 Electricity ........................................ 25.3 1.9 2.2 2.8 4.0 7.0 3.5 1.9 0.7 1.4 10.6

 Built-In Electric Units .................... 7.0 Q 0.3 0.3 0.8 2.3 1.4 0.6 0.4 0.7 19.6

 Central Warm-Air Furnace ........... 9.5 0.8 0.9 1.1 1.7 2.8 1.2 0.7 Q 0.2 16.4

 For One Housing Unit ................ 9.3 0.8 0.9 1.1 1.7 2.7 1.1 0.6 Q 0.2 16.3

 Heat Pump ................................... 7.5 0.8 1.0 1.3 1.3 1.7 0.7 0.5 Q 0.2 19.2

 Other ............................................ 1.3 Q Q Q 0.1 0.3 0.3 Q Q 0.2 30.0

 Fuel Oil ........................................... 10.2 0.1 0.2 0.2 0.3 1.2 1.2 1.8 1.2 4.1 16.7

 Steam or Hot-Water System ........ 5.3 0.1 0.1 0.1 0.1 0.6 0.5 1.0 0.6 2.2 21.0

 For One Housing Unit ................ 3.5 0.1 0.1 0.1 0.1 0.5 0.4 0.7 0.3 1.3 23.8

 For Two or More Units ............... 1.8 Q Q Q Q Q Q 0.3 0.4 0.9 21.8

 Central Warm-Air Furnace ........... 4.5 Q 0.1 0.1 0.2 0.5 0.6 0.7 0.5 1.7 23.1

 Other ............................................ 0.4 Q Q Q Q Q Q Q Q 0.2 42.2

 Wood .............................................. 3.1 Q 0.2 0.1 0.3 0.8 0.4 0.4 0.2 0.7 20.7

 Heating Stove ............................... 2.4 Q 0.2 0.1 0.2 0.5 0.4 0.3 0.1 0.6 23.3

 Other ............................................ 0.7 Q Q Q 0.1 0.2 Q Q Q Q 35.8

 LPG ................................................ 4.8 0.3 0.2 0.2 0.3 1.0 0.6 0.5 0.4 1.2 20.4

 Central Warm-Air Furnace ........... 3.1 0.3 0.2 0.2 0.3 0.7 0.5 0.2 Q 0.6 23.4

 Room Heater ................................ 1.1 Q Q Q Q 0.2 Q 0.3 0.2 0.4 33.7

 Other ............................................ 0.6 Q Q Q Q Q Q Q Q 0.2 46.4

 Kerosene ........................................ 1.0 Q Q 0.1 Q 0.3 Q Q Q 0.2 34.7

 Other .............................................. 0.4 Q Q Q Q Q Q Q Q 0.2 74.3

 None ............................................... 0.9 Q Q Q Q 0.2 0.2 0.2 Q Q 40.6

Amount of Heat Provided

by Main Heating Equipment

 All or Almost All .............................. 87.3 4.2 4.3 5.1 7.9 16.4 13.5 11.7 6.1 18.2 5.6

 About Three-Fourths ...................... 5.4 0.2 0.3 0.2 0.3 1.0 0.9 0.9 0.4 1.1 17.0

 Closer to One-Half ......................... 3.1 0.1 0.1 0.1 0.2 0.5 0.4 0.3 0.4 0.9 22.3

 No Main Equipment ........................ 0.9 Q Q Q Q 0.2 0.2 0.2 Q Q 40.6

Age of Main

Heating Equipment

 Less than 2 Years .......................... 9.0 2.7 Q 0.1 0.4 1.1 1.2 1.4 0.5 1.5 14.9

 2 to 4 Years .................................... 10.6 1.5 2.1 0.2 0.4 1.5 1.2 1.4 0.9 1.6 14.4

 5 to 9 Years .................................... 17.7 Q 2.2 4.4 1.3 1.5 1.9 1.8 1.3 3.2 9.5

 10 to 19 Years ................................ 21.6 Q Q 0.2 5.0 6.9 1.8 2.6 1.2 3.9 9.2

 20 Years or More ........................... 21.5 Q Q Q Q 3.8 5.9 3.7 1.9 6.1 8.3

 Don’t Know ..................................... 15.3 0.3 0.3 0.6 1.2 3.1 2.8 2.0 1.0 4.0 12.5

 No Main Equipment ........................ 0.9 Q Q Q Q 0.2 0.2 0.2 Q Q 40.6

See footnotes at end of table.

66 Energy Information Administration/Housing Characteristrics 1993
Table 3.8b. Space Heating by Year of Construction,

 Percent of Households, 1993

Space Heating

Characteristics

RSE Column Factor:

Total

Year of Construction

RSE

Row

Factors

1991

 to

19931

1988

 to

1990

1985

to

1987

1980

to

1984

1970

to

1979

1960

to

1969

1950

to

1959

1940

to

1949

1939

or

Before

0.4 1.4 1.3 1.4 1.1 0.9 0.9 1.0 1.2 0.8

Total ................................................. 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 0.0

Main Heating Fuel and Equipment

 Natural Gas .................................... 52.6 46.4 38.0 39.2 40.4 42.1 59.3 62.1 62.2 61.0 5.9

 Central Warm-Air Furnace ........... 36.2 44.6 34.8 36.2 35.2 32.4 41.0 42.0 34.3 31.6 7.4

 For One Housing Unit ................ 35.3 44.2 34.8 35.3 34.4 31.8 40.1 41.6 33.8 29.7 7.6

 For Two or More Units ............... 0.9 Q Q Q Q Q Q Q Q 1.9 37.5

 Steam or Hot-Water System ........ 9.0 Q 2.6 Q 3.3 5.6 12.3 7.1 10.8 17.8 19.6

 For One Housing Unit ................ 5.3 Q 1.7 Q 2.3 1.6 6.0 6.4 6.0 11.0 23.7

 For Two or More Units ............... 3.8 Q Q Q Q 4.1 6.3 Q 4.9 6.8 24.0

 Floor, Wall, or 

 Pipeless Furnace ......................... 4.4 Q Q Q 1.6 2.8 4.1 9.9 9.9 4.9 20.4

 Room Heater/Other ...................... 2.9 Q Q Q Q 1.3 1.8 3.0 7.1 6.7 23.6

 Electricity ........................................ 26.2 42.6 46.1 50.3 46.9 38.7 23.1 14.9 10.4 6.7 8.8

 Built-In Electric Units .................... 7.2 Q 6.1 6.2 9.3 12.8 9.1 4.8 5.5 3.4 19.1

 Central Warm-Air Furnace ........... 9.8 18.5 18.8 20.1 20.1 15.2 7.7 5.5 Q 1.0 15.4

 For One Housing Unit ................ 9.6 18.5 18.8 20.1 20.1 15.0 7.6 4.7 Q 1.0 15.3

 Heat Pump ................................... 7.8 18.9 20.3 23.4 15.7 9.1 4.4 3.5 Q 1.2 17.8

 Other ............................................ 1.4 Q Q Q 1.7 1.6 1.8 Q Q 1.1 29.0

 Fuel Oil ........................................... 10.6 2.9 4.5 3.0 3.2 6.6 8.0 13.6 17.1 20.1 16.2

 Steam or Hot-Water System ........ 5.5 2.2 2.1 1.3 1.3 3.5 3.5 7.4 9.2 10.8 20.7

 For One Housing Unit ................ 3.6 1.7 1.8 1.3 1.0 2.8 2.7 5.4 3.8 6.5 23.8

 For Two or More Units ............... 1.9 Q Q Q Q Q Q 2.0 5.4 4.4 21.0

 Central Warm-Air Furnace ........... 4.7 Q 2.4 1.7 1.9 2.9 4.1 5.7 7.4 8.4 22.3

 Other ............................................ 0.4 Q Q Q Q Q Q Q Q 0.9 40.6

 Wood .............................................. 3.2 Q 4.2 1.8 3.9 4.2 2.8 3.1 3.1 3.3 21.0

 Heating Stove ............................... 2.5 Q 3.6 1.5 2.8 2.9 2.4 2.3 2.0 2.8 23.4

 Other ............................................ 0.8 Q Q Q 1.1 1.3 Q Q Q Q 34.4

 LPG ................................................ 5.0 7.6 5.2 4.4 3.7 5.3 4.3 4.0 5.2 5.9 20.5

 Central Warm-Air Furnace ........... 3.2 7.1 4.7 3.8 3.7 3.7 3.1 1.4 Q 3.1 23.1

 Room Heater ................................ 1.2 Q Q Q Q 1.0 Q 2.1 3.0 1.9 33.4

 Other ............................................ 0.6 Q Q Q Q Q Q Q Q 0.9 45.2

 Kerosene ........................................ 1.0 Q Q 1.3 Q 1.4 Q Q Q 1.2 34.0

 Other .............................................. 0.4 Q Q Q Q Q Q Q Q 1.1 70.5

 None ............................................... 0.9 Q Q Q Q 1.2 1.4 1.3 Q Q 38.8

Amount of Heat Provided

by Main Heating Equipment

 All or Almost All .............................. 90.3 93.9 90.3 93.3 92.8 90.3 89.7 89.9 87.7 89.3 1.3

 About Three-Fourths ...................... 5.6 4.4 6.8 4.5 3.9 5.7 6.0 6.7 5.4 5.6 16.7

 Closer to One-Half ......................... 3.2 1.8 2.4 2.2 2.7 2.9 2.9 2.1 5.7 4.5 22.0

 No Main Equipment ........................ 0.9 Q Q Q Q 1.2 1.4 1.3 Q Q 38.8

Age of Main

Heating Equipment

 Less than 2 Years .......................... 9.3 60.1 Q 2.6 5.2 6.0 7.9 10.9 7.6 7.2 13.0

 2 to 4 Years .................................... 11.0 33.2 43.6 2.8 4.3 8.4 8.3 10.5 12.5 7.7 12.9

 5 to 9 Years .................................... 18.3 Q 45.9 80.4 15.9 8.4 12.7 14.1 18.4 15.9 7.8

 10 to 19 Years ................................ 22.4 Q Q 3.2 59.5 38.1 11.7 19.8 17.2 19.2 7.7

 20 Years or More ........................... 22.2 Q Q Q Q 21.0 39.0 28.3 28.2 29.8 6.2

 Don’t Know ..................................... 15.8 6.2 7.0 11.0 14.0 16.9 18.9 15.2 14.9 19.6 11.9

 No Main Equipment ........................ 0.9 Q Q Q Q 1.2 1.4 1.3 Q Q 38.8

See footnotes at end of table.

Energy Information Administration/Housing Characteristrics 1993 67
Table 3.8a. Space Heating by Year of Construction,

 Million U.S. Households, 1993 (Continued)

Space Heating

Characteristics

RSE Column Factor:

Total

Year of Construction

RSE

Row

Factors

1991

 to

19931

1988

 to

1990

1985

to

1987

1980

to

1984

1970

to

1979

1960

to

1969

1950

to

1959

1940

to

1949

1939

or

Before

0.4 1.5 1.3 1.5 1.1 0.9 0.9 1.0 1.2 0.8

Secondary Heating Fuel and

Equipment

(more than one may apply)

 No ................................................... 60.8 2.7 2.6 3.1 5.0 11.3 9.7 8.3 4.6 13.5 6.7

 Yes ................................................. 35.9 1.8 2.2 2.3 3.4 6.8 5.3 4.7 2.4 6.9 7.6

 Natural Gas .................................. 4.1 0.4 0.3 0.3 0.3 0.5 0.6 0.6 0.3 0.9 20.7

 Fireplace .................................... 1.8 0.4 0.1 0.2 Q 0.2 0.2 0.2 Q 0.2 30.0

 Room Heater .............................. 1.0 Q Q Q Q Q Q 0.2 Q 0.3 27.0

 Central Warm-Air Furnace ......... 0.6 Q Q Q Q Q Q Q Q Q 48.5

 Other Equipment ........................ 0.9 Q Q Q Q Q Q 0.1 Q 0.4 38.3

 Electricity ...................................... 14.6 0.4 0.6 0.8 1.3 2.4 2.2 2.1 1.0 3.8 10.8

 Portable Heater .......................... 9.8 0.3 0.3 0.5 0.9 1.5 1.5 1.5 0.7 2.7 13.8

 Built-in Electric Units .................. 4.0 0.1 0.2 0.3 0.4 0.6 0.6 0.6 0.2 1.0 20.0

 Other Equipment ........................ 0.8 Q Q Q Q 0.2 Q Q Q Q 27.2

 Fuel Oil ......................................... 0.4 Q Q Q Q Q Q Q Q 0.2 43.8

 Wood ............................................ 19.0 1.2 1.5 1.5 2.0 4.3 2.8 2.6 1.0 2.1 10.7

 Fireplace .................................... 15.9 1.2 1.3 1.4 1.8 3.6 2.4 2.2 0.7 1.3 11.7

 Heating Stove ............................. 3.4 0.1 0.1 0.1 0.2 0.9 0.4 0.5 0.3 0.7 20.3

 Other Equipment ........................ 0.2 Q Q Q Q Q Q Q Q Q 72.6

 LPG .............................................. 1.2 Q 0.1 Q 0.1 0.3 Q Q Q 0.3 31.6

 Kerosene ...................................... 2.6 Q 0.1 0.1 0.1 0.4 0.5 0.3 0.2 0.9 27.3

 Other ............................................ 0.4 Q Q Q Q Q Q Q Q Q 60.0

1 Does not include all new construction for 1993.

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to totals. 

• See "Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 1993 Residential Energy Consumption Survey. 

(For specific titles of forms, see Appendix D.)

68 Energy Information Administration/Housing Characteristrics 1993
Table 3.8b. Space Heating by Year of Construction,

 Percent of Households, 1993 (Continued)

Space Heating

Characteristics

RSE Column Factor:

Total

Year of Construction

RSE

Row

Factors

1991

 to

19931

1988

 to

1990

1985

to

1987

1980

to

1984

1970

to

1979

1960

to

1969

1950

to

1959

1940

to

1949

1939

or

Before

0.4 1.4 1.3 1.4 1.1 0.9 0.9 1.0 1.2 0.8

Secondary Heating Fuel and

Equipment

(more than one may apply)

 No ................................................... 62.9 59.3 54.3 57.3 59.6 62.4 64.6 63.7 65.9 66.2 3.9

 Yes ................................................. 37.1 40.7 45.7 42.7 40.4 37.6 35.4 36.3 34.1 33.8 6.2

 Natural Gas .................................. 4.2 8.7 6.0 5.9 3.2 2.5 3.9 4.4 4.8 4.2 20.7

 Fireplace .................................... 1.9 8.1 3.1 4.0 Q 1.2 1.3 1.4 Q 0.7 29.9

 Room Heater .............................. 1.0 Q Q Q Q Q Q 1.5 Q 1.5 26.6

 Central Warm-Air Furnace ......... 0.6 Q Q Q Q Q Q Q Q Q 45.1

 Other Equipment ........................ 0.9 Q Q Q Q Q Q 1.1 Q 1.8 37.5

 Electricity ...................................... 15.1 8.2 12.3 14.0 15.8 13.3 14.7 16.4 15.2 18.4 10.0

 Portable Heater .......................... 10.1 5.8 6.8 9.3 10.3 8.2 9.9 11.1 9.9 13.4 12.8

 Built-in Electric Units .................. 4.1 1.4 4.0 4.7 5.2 3.5 3.8 4.9 3.2 4.8 20.2

 Other Equipment ........................ 0.8 Q Q Q Q 1.3 Q Q Q Q 26.1

 Fuel Oil ......................................... 0.4 Q Q Q Q Q Q Q Q 0.7 41.5

 Wood ............................................ 19.7 27.8 30.8 27.3 23.9 23.8 18.5 20.0 14.6 10.1 9.4

 Fireplace .................................... 16.5 26.2 28.0 25.0 21.1 20.0 16.1 16.6 10.8 6.5 10.5

 Heating Stove ............................. 3.6 2.2 3.1 2.4 2.9 5.1 2.7 3.7 3.7 3.7 20.1

 Other Equipment ........................ 0.2 Q Q Q Q Q Q Q Q Q 67.5

 LPG .............................................. 1.3 Q 1.7 Q 1.2 1.7 Q Q Q 1.4 31.0

 Kerosene ...................................... 2.7 Q 2.0 1.9 1.5 2.0 3.3 2.5 2.8 4.3 27.2

 Other ............................................ 0.4 Q Q Q Q Q Q Q Q Q 55.8

1 Does not include all new construction for 1993.

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to totals. 

• See "Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 1993 Residential Energy Consumption Survey. 

(For specific titles of forms, see Appendix D.)

Energy Information Administration/Housing Characteristrics 1993 69
Table 3.9a. Space Heating by Type and Ownership of Housing Unit,

 Million U.S. Households, 1993

Space Heating

Characteristics

RSE Column Factor:

Total

Type and Ownership of Housing Unit

RSE

Row

Factors

Single-Family 

Multifamily

Two to Four Units Five or More Units Mobile Home

Total Own Rent Total Own Rent Total Own Rent Total Own Rent

0.4 0.4 0.4 0.9 1.1 1.8 1.1 0.9 2.5 1.0 1.2 1.3 2.0

Total ................................................. 96.6 66.8 55.8 11.0 8.0 1.5 6.5 16.2 1.6 14.7 5.6 4.4 1.2 5.9

Main Heating Fuel and Equipment

 Natural Gas .................................... 50.8 37.3 31.1 6.3 4.7 0.9 3.7 7.0 0.6 6.4 1.8 1.5 0.3 9.2

 Central Warm-Air Furnace ........... 34.9 28.8 24.6 4.1 1.7 0.3 1.4 2.8 0.3 2.5 1.7 1.4 0.2 12.9

 For One Housing Unit ................ 34.1 28.7 24.6 4.1 1.3 0.3 1.0 2.4 0.3 2.1 1.7 1.4 0.2 13.4

 For Two or More Units ............... 0.9 Q Q Q 0.4 Q 0.4 0.4 Q 0.4 Q Q Q 31.8

 Steam or Hot-Water System ........ 8.7 3.6 3.3 0.3 1.9 0.6 1.4 3.1 Q 2.9 Q Q Q 16.0

 For One Housing Unit ................ 5.1 3.6 3.3 0.3 0.9 0.4 0.5 0.6 Q 0.6 Q Q Q 20.7

 For Two or More Units ............... 3.6 Q Q Q 1.0 Q 0.9 2.5 Q 2.4 Q Q Q 16.7

 Floor, Wall, or 

 Pipeless Furnace ......................... 4.3 2.9 1.8 1.1 0.5 Q 0.5 0.8 Q 0.7 Q Q Q 23.3

 Room Heater/Other ...................... 2.8 2.0 1.3 0.7 0.5 Q 0.5 0.3 Q 0.3 Q Q Q 27.4

 Electricity ........................................ 25.3 14.3 11.7 2.6 2.3 0.2 2.1 7.2 0.7 6.5 1.5 1.2 0.3 13.4

 Built-In Electric Units .................... 7.0 3.3 2.6 0.7 1.1 Q 1.1 2.5 Q 2.3 0.1 0.1 Q 22.5

 Central Warm-Air Furnace ........... 9.5 4.5 3.7 0.8 0.7 Q 0.6 3.2 0.3 2.9 1.2 0.9 0.2 17.7

 For One Housing Unit ................ 9.3 4.5 3.7 0.8 0.7 Q 0.6 3.0 0.3 2.7 1.2 0.9 0.2 17.9

 Heat Pump ................................... 7.5 5.8 5.1 0.7 0.3 Q 0.2 1.3 Q 1.1 0.1 0.1 Q 24.8

 Other ............................................ 1.3 0.7 0.4 0.3 0.2 Q 0.2 0.3 Q 0.3 0.2 Q Q 30.6

 Fuel Oil ........................................... 10.2 7.6 6.7 0.9 0.9 0.3 0.6 1.5 0.2 1.3 0.3 0.2 Q 16.4

 Steam or Hot-Water System ........ 5.3 3.3 3.0 0.3 0.6 0.2 0.4 1.4 0.2 1.2 Q Q Q 17.8

 For One Housing Unit ................ 3.5 3.3 3.0 0.3 0.2 Q 0.1 Q Q Q Q Q Q 27.9

 For Two or More Units ............... 1.8 Q Q Q 0.4 Q 0.3 1.4 0.2 1.2 Q Q Q 15.7

 Central Warm-Air Furnace ........... 4.5 4.0 3.5 0.6 0.2 Q Q Q Q Q 0.3 0.2 Q 25.4

 Other ............................................ 0.4 0.3 0.2 Q Q Q Q Q Q Q Q Q Q 58.7

 Wood .............................................. 3.1 2.8 2.5 0.3 Q Q Q Q Q Q 0.2 0.2 Q 23.6

 Heating Stove ............................... 2.4 2.1 1.8 0.3 Q Q Q Q Q Q 0.2 0.2 Q 27.2

 Other ............................................ 0.7 0.7 0.7 Q Q Q Q Q Q Q Q Q Q 39.0

 LPG ................................................ 4.8 3.5 3.1 0.4 Q Q Q Q Q Q 1.2 0.9 0.3 19.2

 Central Warm-Air Furnace ........... 3.1 2.1 1.8 0.2 Q Q Q Q Q Q 1.0 0.8 0.2 22.6

 Room Heater ................................ 1.1 1.0 0.9 Q Q Q Q Q Q Q Q Q Q 45.7

 Other ............................................ 0.6 0.4 0.3 0.1 Q Q Q Q Q Q Q Q Q 58.7

 Kerosene ........................................ 1.0 0.5 0.2 0.2 Q Q Q Q Q Q 0.4 0.3 0.1 30.5

 Other .............................................. 0.4 Q Q Q Q Q Q 0.1 Q 0.1 Q Q Q 65.0

 None ............................................... 0.9 0.5 0.3 0.2 Q Q Q 0.3 Q 0.2 Q Q Q 41.0

Amount of Heat Provided

by Main Heating Equipment

 All or Almost All .............................. 87.3 59.1 49.4 9.7 7.5 1.3 6.1 15.5 1.5 14.1 5.1 4.1 1.0 6.2

 About Three-Fourths ...................... 5.4 4.8 4.1 0.6 0.2 Q Q 0.2 Q 0.2 0.2 0.2 Q 22.1

 Closer to One-Half ......................... 3.1 2.5 2.0 0.5 0.3 Q 0.3 0.2 Q 0.2 0.1 0.1 Q 25.2

 No Main Equipment ........................ 0.9 0.5 0.3 0.2 Q Q Q 0.3 Q 0.2 Q Q Q 41.0

Age of Main

Heating Equipment

 Less than 2 Years .......................... 9.0 6.9 6.0 0.9 0.4 Q 0.3 1.1 Q 1.0 0.5 0.4 Q 17.7

 2 to 4 Years .................................... 10.6 8.5 7.6 0.9 0.6 0.2 0.4 0.6 Q 0.5 0.9 0.8 0.1 17.5

 5 to 9 Years .................................... 17.7 13.9 12.0 1.9 1.1 0.3 0.8 1.4 0.2 1.2 1.4 1.2 0.2 13.3

 10 to 19 Years ................................ 21.6 16.4 14.5 1.9 1.4 0.3 1.1 2.3 0.3 2.0 1.5 1.3 0.2 11.3

 20 Years or More ........................... 21.5 15.9 13.4 2.5 1.9 0.4 1.4 3.0 0.5 2.5 0.6 0.5 0.2 11.5

 Don’t Know ..................................... 15.3 4.7 1.9 2.7 2.5 Q 2.5 7.6 0.2 7.4 0.5 0.2 0.3 12.3

 No Main Equipment ........................ 0.9 0.5 0.3 0.2 Q Q Q 0.3 Q 0.2 Q Q Q 41.0

See footnotes at end of table.

70 Energy Information Administration/Housing Characteristrics 1993
Table 3.9b. Space Heating by Type and Ownership of Housing Unit,

 Percent of Households, 1993

Space Heating

Characteristics

RSE Column Factor:

Total

Type and Ownership of Housing Unit

RSE

Row

Factors

Single-Family 

Multifamily

Two to Four Units Five or More Units Mobile Home

Total Own Rent Total Own Rent Total Own Rent Total Own Rent

0.4 0.4 0.5 0.9 1.1 1.8 1.1 0.9 2.3 1.0 1.1 1.3 2.1

Total ................................................. 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 0.0

Main Heating Fuel and Equipment

 Natural Gas .................................... 52.6 55.9 55.7 56.7 58.1 63.3 56.9 43.2 36.9 43.9 32.4 34.5 24.6 7.8

 Central Warm-Air Furnace ........... 36.2 43.0 44.2 37.4 21.7 21.0 21.9 17.2 19.7 16.9 29.7 32.5 19.0 11.8

 For One Housing Unit ................ 35.3 43.0 44.1 37.1 16.4 19.7 15.6 14.7 19.7 14.2 29.7 32.5 19.0 12.4

 For Two or More Units ............... 0.9 Q Q Q 5.3 Q 6.2 2.4 Q 2.7 Q Q Q 31.5

 Steam or Hot-Water System ........ 9.0 5.4 5.9 3.0 23.9 37.6 20.8 19.4 Q 20.0 Q Q Q 15.3

 For One Housing Unit ................ 5.3 5.4 5.9 2.6 10.8 27.1 7.1 3.8 Q 3.9 Q Q Q 20.1

 For Two or More Units ............... 3.8 Q Q Q 13.1 Q 13.7 15.6 Q 16.1 Q Q Q 16.0

 Floor, Wall, or 

 Pipeless Furnace ......................... 4.4 4.4 3.2 10.4 6.3 Q 7.2 4.9 Q 5.0 Q Q Q 22.5

 Room Heater/Other ...................... 2.9 3.0 2.4 6.0 6.2 Q 7.1 1.8 Q 1.9 Q Q Q 26.3

 Electricity ........................................ 26.2 21.4 21.0 23.5 28.1 13.4 31.5 44.6 45.5 44.5 27.4 28.2 24.5 11.2

 Built-In Electric Units .................... 7.2 5.0 4.7 6.4 13.8 Q 16.2 15.2 Q 15.3 2.0 2.0 Q 21.4

 Central Warm-Air Furnace ........... 9.8 6.7 6.6 7.5 8.2 Q 9.5 19.5 17.7 19.7 20.7 20.7 20.5 15.7

 For One Housing Unit ................ 9.6 6.7 6.6 7.5 8.2 Q 9.5 18.5 17.7 18.6 20.7 20.7 20.5 15.9

 Heat Pump ................................... 7.8 8.7 9.1 6.8 3.8 Q 3.0 8.2 Q 7.7 1.8 2.3 Q 23.9

 Other ............................................ 1.4 1.0 0.7 2.9 2.3 Q 2.8 1.7 Q 1.8 2.9 Q Q 30.3

 Fuel Oil ........................................... 10.6 11.4 12.0 8.4 10.8 19.5 8.8 9.0 11.8 8.7 5.3 4.0 Q 16.6

 Steam or Hot-Water System ........ 5.5 5.0 5.4 2.6 7.8 12.4 6.8 8.6 11.8 8.2 Q Q Q 17.7

 For One Housing Unit ................ 3.6 4.9 5.4 2.6 2.4 Q 1.8 Q Q Q Q Q Q 27.4

 For Two or More Units ............... 1.9 Q Q Q 5.5 Q 5.0 8.4 11.8 8.1 Q Q Q 16.3

 Central Warm-Air Furnace ........... 4.7 6.0 6.2 5.2 2.2 Q Q Q Q Q 4.8 3.8 Q 25.3

 Other ............................................ 0.4 0.4 0.4 Q Q Q Q Q Q Q Q Q Q 55.5

 Wood .............................................. 3.2 4.2 4.5 3.0 Q Q Q Q Q Q 4.1 4.4 Q 23.5

 Heating Stove ............................... 2.5 3.2 3.3 2.8 Q Q Q Q Q Q 3.6 3.7 Q 27.1

 Other ............................................ 0.8 1.0 1.2 Q Q Q Q Q Q Q Q Q Q 36.9

 LPG ................................................ 5.0 5.3 5.5 3.9 Q Q Q Q Q Q 21.6 21.2 23.0 18.6

 Central Warm-Air Furnace ........... 3.2 3.1 3.3 1.9 Q Q Q Q Q Q 18.2 18.6 16.8 21.7

 Room Heater ................................ 1.2 1.5 1.7 Q Q Q Q Q Q Q Q Q Q 42.8

 Other ............................................ 0.6 0.6 0.6 1.1 Q Q Q Q Q Q Q Q Q 56.2

 Kerosene ........................................ 1.0 0.7 0.4 1.9 Q Q Q Q Q Q 7.7 6.6 11.9 28.8

 Other .............................................. 0.4 Q Q Q Q Q Q 0.9 Q 1.0 Q Q Q 63.9

 None ............................................... 0.9 0.7 0.5 2.0 Q Q Q 1.7 Q 1.3 Q Q Q 39.9

Amount of Heat Provided

by Main Heating Equipment

 All or Almost All .............................. 90.3 88.5 88.5 88.1 93.4 90.1 94.2 95.7 93.5 95.9 92.2 93.7 86.3 1.5

 About Three-Fourths ...................... 5.6 7.1 7.4 5.6 2.3 Q Q 1.4 Q 1.5 4.3 3.4 Q 21.5

 Closer to One-Half ......................... 3.2 3.7 3.5 4.3 3.6 Q 4.3 1.2 Q 1.3 2.4 1.9 Q 24.6

 No Main Equipment ........................ 0.9 0.7 0.5 2.0 Q Q Q 1.7 Q 1.3 Q Q Q 39.9

Age of Main

Heating Equipment

 Less than 2 Years .......................... 9.3 10.4 10.8 8.1 5.3 Q 5.0 6.7 Q 6.5 9.7 9.8 Q 17.1

 2 to 4 Years .................................... 11.0 12.7 13.6 8.1 8.0 15.9 6.1 3.6 Q 3.1 16.4 17.5 12.2 16.2

 5 to 9 Years .................................... 18.3 20.7 21.5 16.9 13.7 20.6 12.1 8.4 12.3 8.0 25.0 26.5 19.1 11.9

 10 to 19 Years ................................ 22.4 24.6 26.0 17.4 17.3 22.3 16.2 14.2 19.4 13.6 26.5 29.8 14.3 9.7

 20 Years or More ........................... 22.2 23.8 24.0 22.7 23.5 29.7 22.1 18.7 33.8 17.1 11.6 10.8 14.6 10.3

 Don’t Know ..................................... 15.8 7.0 3.5 24.8 31.5 Q 38.1 46.7 11.8 50.4 9.7 4.6 28.8 10.8

 No Main Equipment ........................ 0.9 0.7 0.5 2.0 Q Q Q 1.7 Q 1.3 Q Q Q 39.9

See footnotes at end of table.

Energy Information Administration/Housing Characteristrics 1993 71
Table 3.9a. Space Heating by Type and Ownership of Housing Unit,

 Million U.S. Households, 1993 (Continued)

Space Heating

Characteristics

RSE Column Factor:

Total

Type and Ownership of Housing Unit

RSE

Row

Factors

Single-Family 

Multifamily

Two to Four Units Five or More Units Mobile Home

Total Own Rent Total Own Rent Total Own Rent Total Own Rent

0.4 0.4 0.4 0.9 1.1 1.8 1.1 0.9 2.5 1.0 1.2 1.3 2.0

Secondary Heating Fuel and

Equipment

(more than one may apply)

 No ................................................... 60.8 36.0 28.5 7.5 6.5 1.1 5.4 14.3 1.4 12.9 3.9 3.2 0.8 6.9

 Yes ................................................. 35.9 30.8 27.2 3.5 1.5 0.4 1.1 1.9 0.1 1.8 1.6 1.2 0.4 11.3

 Natural Gas .................................. 4.1 3.6 3.2 0.4 0.1 Q Q 0.3 Q 0.3 Q Q Q 26.4

 Fireplace .................................... 1.8 1.7 1.5 0.1 Q Q Q Q Q Q Q Q Q 34.4

 Room Heater .............................. 1.0 0.9 0.9 Q Q Q Q Q Q Q Q Q Q 37.6

 Central Warm-Air Furnace ......... 0.6 0.6 0.5 Q Q Q Q Q Q Q Q Q Q 49.1

 Other Equipment ........................ 0.9 0.6 0.4 0.2 Q Q Q 0.2 Q 0.2 Q Q Q 41.3

 Electricity ...................................... 14.6 11.8 10.3 1.5 0.8 0.2 0.6 1.2 Q 1.1 0.8 0.6 0.2 13.5

 Portable Heater .......................... 9.8 7.6 6.5 1.1 0.6 0.2 0.4 0.9 Q 0.9 0.7 0.4 0.2 14.9

 Built-in Electric Units .................. 4.0 3.6 3.3 0.3 0.2 Q 0.1 0.1 Q 0.1 Q Q Q 29.7

 Other Equipment ........................ 0.8 0.5 0.4 Q Q Q Q 0.1 Q 0.1 0.1 Q Q 37.0

 Fuel Oil ......................................... 0.4 0.3 0.3 Q Q Q Q Q Q Q Q Q Q 47.5

 Wood ............................................ 19.0 17.5 16.0 1.5 0.5 0.2 Q 0.5 Q 0.4 0.4 0.4 Q 17.5

 Fireplace .................................... 15.9 14.6 13.3 1.3 0.5 0.1 Q 0.5 Q 0.4 0.3 0.3 Q 19.4

 Heating Stove ............................. 3.4 3.3 3.0 0.3 0.1 Q Q Q Q Q 0.1 0.1 Q 23.3

 Other Equipment ........................ 0.2 0.2 0.2 Q Q Q Q Q Q Q Q Q Q 74.8

 LPG .............................................. 1.2 1.1 0.9 0.1 Q Q Q Q Q Q 0.2 0.1 Q 35.1

 Kerosene ...................................... 2.6 2.2 1.8 0.4 Q Q Q Q Q Q 0.3 0.1 Q 30.5

 Other ............................................ 0.4 0.3 0.2 Q Q Q Q Q Q Q Q Q Q 64.6

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to totals. 

• See "Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 1993 Residential Energy Consumption Survey. 

(For specific titles of forms, see Appendix D.)

72 Energy Information Administration/Housing Characteristrics 1993
Table 3.9b. Space Heating by Type and Ownership of Housing Unit,

 Percent of Households, 1993 (Continued)

Space Heating

Characteristics

RSE Column Factor:

Total

Type and Ownership of Housing Unit

RSE

Row

Factors

Single-Family 

Multifamily

Two to Four Units Five or More Units Mobile Home

Total Own Rent Total Own Rent Total Own Rent Total Own Rent

0.4 0.4 0.5 0.9 1.1 1.8 1.1 0.9 2.3 1.0 1.1 1.3 2.1

Secondary Heating Fuel and

Equipment

(more than one may apply)

 No ................................................... 62.9 53.9 51.1 68.0 81.0 73.4 82.8 88.2 90.4 88.0 70.6 71.9 65.7 3.3

 Yes ................................................. 37.1 46.1 48.9 32.0 19.0 26.6 17.2 11.8 9.6 12.0 29.4 28.1 34.3 9.9

 Natural Gas .................................. 4.2 5.4 5.7 3.8 1.5 Q Q 2.0 Q 2.2 Q Q Q 25.2

 Fireplace .................................... 1.9 2.5 2.8 1.2 Q Q Q Q Q Q Q Q Q 32.2

 Room Heater .............................. 1.0 1.4 1.5 Q Q Q Q Q Q Q Q Q Q 35.1

 Central Warm-Air Furnace ......... 0.6 0.8 0.9 Q Q Q Q Q Q Q Q Q Q 46.5

 Other Equipment ........................ 0.9 0.9 0.8 1.7 Q Q Q 1.1 Q 1.2 Q Q Q 39.8

 Electricity ...................................... 15.1 17.7 18.5 13.7 10.2 13.5 9.4 7.2 Q 7.5 14.8 13.5 19.7 12.8

 Portable Heater .......................... 10.1 11.4 11.7 9.8 7.8 11.6 6.9 5.6 Q 5.9 11.9 10.2 18.2 14.1

 Built-in Electric Units .................. 4.1 5.4 5.9 3.1 2.1 Q 2.1 0.9 Q 1.0 Q Q Q 29.2

 Other Equipment ........................ 0.8 0.7 0.6 Q Q Q Q 0.8 Q 0.8 2.4 Q Q 36.8

 Fuel Oil ......................................... 0.4 0.5 0.6 Q Q Q Q Q Q Q Q Q Q 44.8

 Wood ............................................ 19.7 26.2 28.7 13.8 6.6 11.2 5.6 3.2 Q 3.0 7.5 9.0 Q 17.8

 Fireplace .................................... 16.5 21.9 23.9 11.6 5.9 9.0 Q 3.2 Q 3.0 5.5 6.9 Q 18.2

 Heating Stove ............................. 3.6 4.9 5.3 2.5 0.9 Q Q Q Q Q 1.9 2.2 Q 23.2

 Other Equipment ........................ 0.2 0.3 0.3 Q Q Q Q Q Q Q Q Q Q 70.5

 LPG .............................................. 1.3 1.6 1.7 1.3 Q Q Q Q Q Q 2.9 2.8 Q 34.8

 Kerosene ...................................... 2.7 3.3 3.2 3.4 Q Q Q Q Q Q 4.6 3.2 Q 29.9

 Other ............................................ 0.4 0.4 0.4 Q Q Q Q Q Q Q Q Q Q 60.9

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to totals. 

• See "Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 1993 Residential Energy Consumption Survey. 

(For specific titles of forms, see Appendix D.)

Energy Information Administration/Housing Characteristrics 1993 73
Table 3.10. Space Heating by Average Floorspace,

 U.S. Households, 1993

Space Heating

Characteristics

RSE Column Factor:

Total

Households

(millions)

Average Square

Feet per

Housing Unit

Average Heated Square Feet per

Household Member

Average Heated Square

Feet per Housing Unit

RSE

Row

Factors

Total Heated

All

Households

SingleFamilyMultifamilyMobile

Home

SingleFamilyMultifamilyMobile

Home

1.3 0.7 0.6 0.7 0.8 1.5 2.0 0.6 1.3 1.2

Total .............................................. 96.6 1,875 1,630 624 698 432 354 1,947 917 938 1.8

Main Heating Fuel and

Equipment

 Natural Gas ................................. 50.8 1,959 1,714 649 712 435 394 1,992 939 972 2.5

 Central Warm-Air Furnace ........ 34.9 2,160 1,884 695 735 479 407 2,072 1,012 995 2.9

 For One Housing Unit .............. 34.1 2,190 1,908 701 735 496 407 2,073 1,038 995 2.9

 For Two or More Units ............. 0.9 973 917 421 Q 409 Q Q 896 Q 13.1

 Steam or Hot-Water System ..... 8.7 1,745 1,538 650 852 453 Q 2,391 934 Q 5.4

 For One Housing Unit .............. 5.1 2,397 2,066 768 858 522 Q 2,398 1,298 Q 6.4

 For Two or More Units ............. 3.6 827 794 416 Q 415 Q Q 783 Q 4.4

 Floor, Wall, or 

 Pipeless Furnace ....................... 4.3 1,220 1,093 424 471 319 Q 1,245 763 Q 7.1

 Room Heater/Other ................... 2.8 1,261 1,101 405 446 316 Q 1,219 840 Q 7.5

 Electricity ..................................... 25.3 1,597 1,409 578 666 442 378 1,803 881 999 2.9

 Built-In Electric Units ................. 7.0 1,346 1,174 525 607 429 351 1,569 812 1,025 7.0

 Central Warm-Air Furnace ........ 9.5 1,510 1,358 542 623 471 379 1,799 944 1,005 4.0

 For One Housing Unit .............. 9.3 1,521 1,367 545 623 474 379 1,799 950 1,005 3.9

 Heat Pump ................................ 7.5 2,039 1,770 708 764 464 474 2,019 926 1,175 6.5

 Other ......................................... 1.3 1,021 951 359 423 270 331 1,133 719 824 11.4

 Fuel Oil ........................................ 10.2 2,268 1,917 714 797 445 349 2,216 1,084 768 4.8

 Steam or Hot-Water System ..... 5.3 2,212 1,870 698 859 411 Q 2,373 1,047 Q 5.0

 For One Housing Unit .............. 3.5 2,828 2,333 857 867 690 Q 2,377 1,712 Q 6.4

 For Two or More Units ............. 1.8 1,027 981 377 Q 379 Q Q 970 Q 6.5

 Central Warm-Air Furnace ........ 4.5 2,409 2,035 754 768 969 363 2,142 1,592 775 7.4

 Other ......................................... 0.4 1,415 1,206 454 481 Q Q 1,390 Q Q 15.4

 Wood ........................................... 3.1 2,097 1,843 589 627 Q 304 1,900 Q 1,144 8.4

 Heating Stove ............................ 2.4 2,001 1,744 558 594 Q 329 1,792 Q 1,195 8.7

 Other ......................................... 0.7 2,416 2,170 692 726 Q Q 2,228 Q Q 14.7

 LPG ............................................. 4.8 1,823 1,630 606 708 Q 319 1,904 Q 886 5.0

 Central Warm-Air Furnace ........ 3.1 2,034 1,809 634 776 Q 332 2,255 Q 914 6.6

 Room Heater ............................. 1.1 1,359 1,227 530 560 Q Q 1,279 Q Q 9.5

 Other ......................................... 0.6 1,620 1,476 578 657 Q Q 1,713 Q Q 19.9

 Kerosene ..................................... 1.0 1,107 935 363 412 Q 322 1,044 Q 868 11.0

 Other ........................................... 0.4 1,455 1,403 713 Q 521 Q Q 785 Q 27.3

 None ............................................ 0.9 1,092 -- -- -- -- -- -- -- -- 16.9

Amount of Heat Provided

by Main Heating Equipment

 All or Almost All ........................... 87.3 1,852 1,619 628 705 439 368 1,947 926 947 1.8

 About Three-Fourths ................... 5.4 2,254 1,979 681 717 522 263 2,097 1,231 930 6.8

 Closer to One-Half ....................... 3.1 2,088 1,811 644 718 356 289 2,038 880 1,056 8.3

 No Main Equipment ..................... 0.9 1,092 -- -- -- -- -- -- -- -- 16.9

Age of Main

Heating Equipment

 Less than 2 Years ....................... 9.0 2,087 1,831 665 715 481 371 2,078 1,002 989 4.6

 2 to 4 Years ................................. 10.6 2,134 1,833 664 722 472 340 2,034 1,075 970 4.4

 5 to 9 Years ................................. 17.7 2,069 1,802 651 703 476 371 2,011 1,061 1,038 3.3

 10 to 19 Years ............................. 21.6 1,997 1,744 641 690 467 371 1,989 966 959 3.1

 20 Years or More ......................... 21.5 1,946 1,679 716 794 469 340 1,940 952 798 3.6

 Don’t Know .................................. 15.3 1,122 1,038 428 489 394 334 1,484 846 801 4.0

 No Main Equipment ..................... 0.9 1,092 -- -- -- -- -- -- -- -- 16.9

See footnotes at end of table.

74 Energy Information Administration/Housing Characteristrics 1993
Table 3.10. Space Heating by Average Floorspace,

 U.S. Households, 1993 (Continued)

Space Heating

Characteristics

RSE Column Factor:

Total

Households

(millions)

Average Square

Feet per

Housing Unit

Average Heated Square Feet per

Household Member

Average Heated Square

Feet per Housing Unit

RSE

Row

Factors

Total Heated

All

Households

SingleFamilyMultifamilyMobile

Home

SingleFamilyMultifamilyMobile

Home

1.3 0.7 0.6 0.7 0.8 1.5 2.0 0.6 1.3 1.2

Secondary Heating Fuel and

Equipment

(more than one may apply)

 No ................................................ 60.8 1,606 1,403 563 646 426 356 1,751 896 904 2.0

 Yes .............................................. 35.9 2,332 2,015 716 757 467 349 2,176 1,045 1,020 2.7

 Natural Gas ............................... 4.1 2,258 1,960 741 763 503 Q 2,082 1,000 Q 8.1

 Fireplace .................................. 1.8 2,764 2,383 879 885 Q Q 2,475 Q Q 9.0

 Room Heater ........................... 1.0 2,027 1,817 692 693 Q Q 1,828 Q Q 11.7

 Central Warm-Air Furnace ...... 0.6 2,400 2,016 695 687 Q Q 2,007 Q Q 16.8

 Other Equipment ..................... 0.9 1,412 1,216 534 611 311 Q 1,461 624 Q 13.0

 Electricity ................................... 14.6 2,122 1,838 685 745 424 347 2,047 979 925 4.1

 Portable Heater ....................... 9.8 1,980 1,693 654 717 436 332 1,916 946 850 4.7

 Built-in Electric Units ............... 4.0 2,424 2,146 759 790 420 Q 2,246 1,109 Q 8.3

 Other Equipment ..................... 0.8 1,796 1,711 549 679 327 358 2,121 1,028 1,095 14.3

 Fuel Oil ...................................... 0.4 2,590 2,083 712 740 Q Q 2,155 Q Q 12.6

 Wood ......................................... 19.0 2,673 2,304 779 796 568 443 2,391 1,241 1,374 3.7

 Fireplace .................................. 15.9 2,686 2,306 778 795 555 486 2,400 1,207 1,411 4.1

 Heating Stove .......................... 3.4 2,640 2,326 796 816 728 345 2,374 1,726 1,267 8.3

 Other Equipment ..................... 0.2 3,130 2,535 898 898 Q Q 2,535 Q Q 30.0

 LPG ........................................... 1.2 1,937 1,719 608 685 Q 253 1,836 Q 954 10.0

 Kerosene ................................... 2.6 2,043 1,756 611 666 Q 276 1,906 Q 838 7.1

 Other ......................................... 0.4 2,458 2,312 872 949 Q Q 2,594 Q Q 22.3

-- = Data not applicable.

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to totals. • See

"Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 1993 Residential Energy Consumption Survey. (For

specific titles of forms, see Appendix D.)

Energy Information Administration/Housing Characteristrics 1993 75
Table 3.11. Space Heating by Total Floorspace,

 U.S. Households, 1993

Space Heating

Characteristics

RSE Column Factor:

Total Households Total Square Footage

RSE

Row

Factors

(millions) (percent)

Total Heated

(billions) (percent) (billions) (percent)

0.9 0.9 1.1 1.0 1.0 1.0

Total ....................................................... 96.6 100.0 181.2 100.0 157.5 100.0 1.1

Main Heating Fuel and Equipment

 Natural Gas .......................................... 50.8 52.6 99.5 54.9 87.1 55.3 3.2

 Central Warm-Air Furnace ................. 34.9 36.2 75.5 41.6 65.8 41.8 3.7

 For One Housing Unit ...................... 34.1 35.3 74.6 41.2 65.0 41.3 3.7

 For Two or More Units ..................... 0.9 0.9 0.8 0.5 0.8 0.5 21.1

 Steam or Hot-Water System .............. 8.7 9.0 15.3 8.4 13.4 8.5 7.5

 For One Housing Unit ...................... 5.1 5.3 12.3 6.8 10.6 6.7 9.0

 For Two or More Units ..................... 3.6 3.8 3.0 1.7 2.9 1.8 9.3

 Floor, Wall, or 

 Pipeless Furnace ............................... 4.3 4.4 5.2 2.9 4.7 3.0 9.8

 Room Heater/Other ............................ 2.8 2.9 3.6 2.0 3.1 2.0 11.9

 Electricity .............................................. 25.3 26.2 40.5 22.3 35.7 22.7 4.3

 Built-In Electric Units .......................... 7.0 7.2 9.4 5.2 8.2 5.2 9.0

 Central Warm-Air Furnace ................. 9.5 9.8 14.3 7.9 12.9 8.2 8.3

 For One Housing Unit ...................... 9.3 9.6 14.2 7.8 12.7 8.1 8.5

 Heat Pump ......................................... 7.5 7.8 15.4 8.5 13.4 8.5 7.0

 Other .................................................. 1.3 1.4 1.3 0.7 1.2 0.8 13.6

 Fuel Oil ................................................. 10.2 10.6 23.2 12.8 19.6 12.5 6.8

 Steam or Hot-Water System .............. 5.3 5.5 11.8 6.5 10.0 6.3 8.9

 For One Housing Unit ...................... 3.5 3.6 9.9 5.5 8.2 5.2 10.9

 For Two or More Units ..................... 1.8 1.9 1.9 1.0 1.8 1.1 13.5

 Central Warm-Air Furnace ................. 4.5 4.7 10.8 6.0 9.2 5.8 8.8

 Other .................................................. 0.4 0.4 0.6 0.3 0.5 0.3 20.8

 Wood .................................................... 3.1 3.2 6.5 3.6 5.8 3.7 9.4

 Heating Stove ..................................... 2.4 2.5 4.8 2.6 4.2 2.7 10.3

 Other .................................................. 0.7 0.8 1.8 1.0 1.6 1.0 17.2

 LPG ...................................................... 4.8 5.0 8.8 4.8 7.8 5.0 10.7

 Central Warm-Air Furnace ................. 3.1 3.2 6.3 3.5 5.6 3.5 11.7

 Room Heater ...................................... 1.1 1.2 1.6 0.9 1.4 0.9 18.7

 Other .................................................. 0.6 0.6 0.9 0.5 0.8 0.5 26.3

 Kerosene .............................................. 1.0 1.0 1.1 0.6 0.9 0.6 17.6

 Other .................................................... 0.4 0.4 0.6 0.3 0.6 0.4 41.3

 None ..................................................... 0.9 0.9 1.0 0.5 -- -- 21.0

Amount of Heat Provided

by Main Heating Equipment

 All or Almost All .................................... 87.3 90.3 161.7 89.2 141.3 89.7 1.3

 About Three-Fourths ............................ 5.4 5.6 12.2 6.7 10.7 6.8 7.7

 Closer to One-Half ............................... 3.1 3.2 6.4 3.5 5.6 3.5 10.1

 No Main Equipment .............................. 0.9 0.9 1.0 0.5 -- -- 21.0

Age of Main

Heating Equipment

 Less than 2 Years ................................ 9.0 9.3 18.8 10.4 16.5 10.5 5.3

 2 to 4 Years .......................................... 10.6 11.0 22.7 12.5 19.5 12.4 5.6

 5 to 9 Years .......................................... 17.7 18.3 36.7 20.2 31.9 20.3 4.2

 10 to 19 Years ...................................... 21.6 22.4 43.1 23.8 37.7 23.9 3.1

 20 Years or More ................................. 21.5 22.2 41.8 23.1 36.1 22.9 3.4

 Don’t Know ........................................... 15.3 15.8 17.2 9.5 15.9 10.1 4.9

 No Main Equipment .............................. 0.9 0.9 1.0 0.5 -- -- 21.0

See footnotes at end of table.

76 Energy Information Administration/Housing Characteristrics 1993
Table 3.11. Space Heating by Total Floorspace,

 U.S. Households, 1993 (Continued)

Space Heating

Characteristics

RSE Column Factor:

Total Households Total Square Footage

RSE

Row

Factors

(millions) (percent)

Total Heated

(billions) (percent) (billions) (percent)

0.9 0.9 1.1 1.0 1.0 1.0

Secondary Heating Fuel and

Equipment

(more than one may apply)

 No ......................................................... 60.8 62.9 97.6 53.9 85.3 54.1 2.3

 Yes ....................................................... 35.9 37.1 83.6 46.1 72.3 45.9 3.3

 Natural Gas ........................................ 4.1 4.2 9.2 5.1 8.0 5.1 9.4

 Fireplace .......................................... 1.8 1.9 5.0 2.8 4.3 2.7 12.7

 Room Heater .................................... 1.0 1.0 1.9 1.1 1.7 1.1 15.9

 Central Warm-Air Furnace ............... 0.6 0.6 1.4 0.8 1.2 0.8 23.8

 Other Equipment .............................. 0.9 0.9 1.2 0.7 1.1 0.7 21.1

 Electricity ............................................ 14.6 15.1 31.0 17.1 26.9 17.1 5.0

 Portable Heater ................................ 9.8 10.1 19.4 10.7 16.6 10.5 5.6

 Built-in Electric Units ........................ 4.0 4.1 9.7 5.3 8.6 5.4 9.3

 Other Equipment .............................. 0.8 0.8 1.4 0.8 1.4 0.9 14.1

 Fuel Oil ............................................... 0.4 0.4 0.9 0.5 0.8 0.5 17.8

 Wood .................................................. 19.0 19.7 50.8 28.0 43.8 27.8 4.6

 Fireplace .......................................... 15.9 16.5 42.8 23.6 36.7 23.3 4.9

 Heating Stove ................................... 3.4 3.6 9.1 5.0 8.0 5.1 8.1

 Other Equipment .............................. 0.2 0.2 0.5 0.3 0.4 0.3 32.0

 LPG .................................................... 1.2 1.3 2.4 1.3 2.1 1.3 15.1

 Kerosene ............................................ 2.6 2.7 5.3 2.9 4.5 2.9 14.7

 Other .................................................. 0.4 0.4 0.9 0.5 0.8 0.5 26.6

-- = Data not applicable.

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to

totals. • See "Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 1993 Residential Energy Consumption

Survey. (For specific titles of forms, see Appendix D.)

Energy Information Administration/Housing Characteristrics 1993 77
Table 3.12a. Space Heating by Family Income, 

 Million U.S. Households, 1993

Space Heating

Characteristics

RSE Column Factor:

Total

1993 Family Income

Below Poverty

Line Eligible

for

Federal

Assistance1

RSE

Row

Factors

Less

than

$5,000

$5,000

to

$9,999

$10,000

to

$14,999

$15,000

to

$24,999

$25,000

to

$34,999

$35,000

to

$49,999

$50,000

or

More

100

Percent

125

Percent

0.5 1.9 1.3 1.1 0.9 1.0 0.9 0.9 1.1 0.9 0.8

Total .................................................... 96.6 4.1 10.6 11.1 18.4 14.1 17.5 21.0 14.4 19.4 30.7 3.5

Main Heating Fuel and Equipment

 Natural Gas ....................................... 50.8 2.0 5.2 6.0 9.6 6.9 9.0 12.1 7.1 9.5 15.5 5.7

 Central Warm-Air Furnace .............. 34.9 0.8 2.7 3.6 6.2 5.3 6.8 9.6 3.4 4.9 8.4 7.1

 For One Housing Unit ................... 34.1 0.8 2.6 3.4 5.9 5.2 6.7 9.5 3.3 4.7 8.1 7.4

 For Two or More Units .................. 0.9 Q Q Q 0.3 Q Q Q Q Q 0.3 37.8

 Steam or Hot-Water System ........... 8.7 0.6 1.2 1.1 1.8 0.9 1.5 1.6 1.6 2.0 3.4 12.4

 For One Housing Unit ................... 5.1 0.2 0.5 0.5 1.1 0.5 0.9 1.3 0.7 1.0 1.6 17.1

 For Two or More Units .................. 3.6 0.3 0.7 0.6 0.7 0.4 0.5 0.3 0.8 1.0 1.8 19.5

 Floor, Wall, or 

 Pipeless Furnace ............................ 4.3 0.2 0.6 0.8 1.0 0.5 0.6 0.6 1.0 1.2 1.9 18.1

 Room Heater/Other ......................... 2.8 0.3 0.7 0.6 0.6 0.2 0.2 0.2 1.1 1.4 1.7 18.5

 Electricity ........................................... 25.3 1.2 3.2 2.8 4.7 4.0 4.5 5.0 4.0 5.3 8.4 8.0

 Built-In Electric Units ....................... 7.0 0.5 1.3 1.1 1.4 1.0 1.0 0.7 1.6 2.1 3.2 15.0

 Central Warm-Air Furnace .............. 9.5 0.4 0.9 1.0 2.0 1.6 1.9 1.6 1.4 1.8 2.8 13.1

 For One Housing Unit ................... 9.3 0.4 0.9 1.0 2.0 1.6 1.9 1.6 1.3 1.7 2.7 13.4

 Heat Pump ...................................... 7.5 0.3 0.6 0.5 1.0 1.2 1.4 2.6 0.6 0.9 1.6 18.0

 Other ............................................... 1.3 Q 0.3 0.3 0.3 0.1 Q Q 0.4 0.5 0.8 23.7

 Fuel Oil .............................................. 10.2 0.4 0.9 0.9 1.7 1.6 2.3 2.4 1.2 1.8 2.8 11.5

 Steam or Hot-Water System ........... 5.3 0.2 0.5 0.5 0.8 0.7 1.2 1.4 0.8 1.0 1.5 14.6

 For One Housing Unit ................... 3.5 Q 0.2 0.3 0.5 0.5 0.8 1.1 0.2 0.3 0.6 21.0

 For Two or More Units .................. 1.8 0.2 0.3 0.3 0.3 0.2 0.4 0.2 0.5 0.7 0.9 17.8

 Central Warm-Air Furnace .............. 4.5 Q 0.3 0.4 0.9 0.9 1.0 1.0 0.4 0.6 1.1 16.7

 Other ............................................... 0.4 Q Q Q Q Q Q Q Q 0.1 0.2 35.9

 Wood ................................................. 3.1 Q 0.3 0.4 0.5 0.4 0.7 0.7 0.5 0.8 1.1 16.7

 Heating Stove .................................. 2.4 Q 0.3 0.4 0.3 0.3 0.6 0.4 0.5 0.7 1.0 18.2

 Other ............................................... 0.7 Q Q Q 0.2 Q 0.1 0.2 Q Q 0.1 34.1

 LPG ................................................... 4.8 0.2 0.7 0.6 1.1 0.9 0.7 0.6 1.0 1.4 1.8 15.5

 Central Warm-Air Furnace .............. 3.1 Q 0.2 0.3 0.8 0.7 0.5 0.5 0.4 0.5 0.8 20.3

 Room Heater ................................... 1.1 Q 0.3 0.2 0.3 0.2 Q Q 0.4 0.6 0.7 26.4

 Other ............................................... 0.6 Q Q Q Q Q Q Q 0.2 0.2 0.3 29.7

 Kerosene ........................................... 1.0 Q 0.2 0.1 0.3 Q Q Q 0.3 0.4 0.6 25.1

 Other ................................................. 0.4 Q Q Q 0.1 Q Q Q Q Q Q 57.6

 None .................................................. 0.9 Q Q 0.1 0.2 Q 0.1 Q 0.2 0.2 0.3 23.3

Amount of Heat Provided

by Main Heating Equipment

 All or Almost All ................................. 87.3 3.7 9.9 10.2 16.6 12.7 15.7 18.5 13.2 17.9 28.1 3.6

 About Three-Fourths ......................... 5.4 0.2 0.3 0.3 0.9 0.9 1.0 1.7 0.4 0.6 1.2 15.7

 Closer to One-Half ............................ 3.1 0.2 0.3 0.4 0.6 0.3 0.6 0.6 0.6 0.7 1.1 17.9

 No Main Equipment ........................... 0.9 Q Q 0.1 0.2 Q 0.1 Q 0.2 0.2 0.3 23.3

Age of Main

Heating Equipment

 Less than 2 Years ............................. 9.0 0.2 1.0 0.7 1.5 1.3 1.9 2.4 1.2 1.6 2.4 12.4

 2 to 4 Years ....................................... 10.6 0.2 0.8 1.0 1.7 1.8 2.2 2.9 1.1 1.6 2.6 11.2

 5 to 9 Years ....................................... 17.7 0.5 1.3 1.8 3.4 2.6 3.6 4.5 1.8 2.7 4.5 8.2

 10 to 19 Years ................................... 21.6 0.8 2.3 2.1 3.8 3.3 4.1 5.2 2.8 4.2 6.4 7.2

 20 Years or More .............................. 21.5 1.0 2.4 2.9 4.5 3.3 3.4 4.1 3.1 4.2 7.2 7.3

 Don’t Know ........................................ 15.3 1.3 2.8 2.5 3.3 1.6 2.1 1.7 4.2 5.0 7.2 8.1

 No Main Equipment ........................... 0.9 Q Q 0.1 0.2 Q 0.1 Q 0.2 0.2 0.3 23.3

See footnotes at end of table.

78 Energy Information Administration/Housing Characteristrics 1993
Table 3.12b. Space Heating by Family Income, 

 Percent of U.S. Households, 1993

Space Heating

Characteristics

RSE Column Factor:

Total

1993 Family Income

Below Poverty

Line Eligible

for

Federal

Assistance1

RSE

Row

Factors

Less

than

$5,000

$5,000

to

$9,999

$10,000

to

$14,999

$15,000

to

$24,999

$25,000

to

$34,999

$35,000

to

$49,999

$50,000

or

More

100

Percent

125

Percent

0.5 1.9 1.3 1.1 0.9 1.1 0.9 0.9 1.1 0.9 0.8

Total .................................................... 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 0.0

Main Heating Fuel and Equipment

 Natural Gas ....................................... 52.6 48.6 48.8 54.1 52.3 49.1 51.8 57.7 49.5 49.1 50.4 4.6

 Central Warm-Air Furnace .............. 36.2 20.4 25.3 32.1 33.8 37.5 38.8 45.8 24.0 25.3 27.5 6.6

 For One Housing Unit ................... 35.3 20.1 24.1 30.8 32.1 36.9 38.3 45.4 23.1 24.5 26.4 6.8

 For Two or More Units .................. 0.9 Q Q Q 1.7 Q Q Q Q Q 1.1 37.4

 Steam or Hot-Water System ........... 9.0 14.4 11.4 10.2 9.7 6.7 8.4 7.7 10.8 10.4 11.2 11.9

 For One Housing Unit ................... 5.3 6.0 5.0 4.9 5.8 3.5 5.3 6.2 5.0 5.1 5.4 16.8

 For Two or More Units .................. 3.8 8.3 6.4 5.3 3.9 3.2 3.1 1.5 5.9 5.2 5.9 19.1

 Floor, Wall, or 

 Pipeless Furnace ............................ 4.4 5.7 5.7 6.8 5.4 3.2 3.5 3.1 6.7 6.3 6.1 17.8

 Room Heater/Other ......................... 2.9 8.1 6.4 5.1 3.3 1.7 1.1 1.1 8.0 7.2 5.6 18.0

 Electricity ........................................... 26.2 29.1 29.8 25.4 25.8 28.3 25.7 23.8 27.6 27.2 27.3 7.1

 Built-In Electric Units ....................... 7.2 11.1 12.0 9.6 7.8 7.4 5.9 3.4 10.8 10.8 10.5 14.7

 Central Warm-Air Furnace .............. 9.8 10.1 8.9 8.9 10.9 11.5 10.9 7.7 9.6 9.4 9.2 12.7

 For One Housing Unit ................... 9.6 9.2 8.6 8.9 10.8 11.2 10.8 7.6 9.1 9.0 8.9 13.1

 Heat Pump ...................................... 7.8 6.3 6.0 4.1 5.6 8.4 8.1 12.3 4.2 4.5 5.2 17.4

 Other ............................................... 1.4 Q 2.8 2.7 1.4 1.1 Q Q 2.9 2.6 2.5 23.2

 Fuel Oil .............................................. 10.6 9.8 8.7 8.3 9.5 11.7 12.9 11.2 8.6 9.1 9.3 11.2

 Steam or Hot-Water System ........... 5.5 5.3 5.1 4.6 4.3 5.1 7.0 6.5 5.3 5.1 5.0 14.5

 For One Housing Unit ................... 3.6 Q 1.8 2.2 2.7 3.7 4.8 5.5 1.6 1.5 2.1 20.9

 For Two or More Units .................. 1.9 3.8 3.2 2.3 1.6 1.4 2.2 1.0 3.7 3.6 2.9 17.7

 Central Warm-Air Furnace .............. 4.7 Q 3.2 3.2 4.8 6.1 5.5 4.7 2.6 3.2 3.6 16.5

 Other ............................................... 0.4 Q Q Q Q Q Q Q Q 0.7 0.7 35.0

 Wood ................................................. 3.2 Q 2.7 3.8 2.7 2.7 4.2 3.2 3.5 4.0 3.7 16.4

 Heating Stove .................................. 2.5 Q 2.4 3.6 1.8 1.9 3.4 2.0 3.3 3.6 3.2 17.8

 Other ............................................... 0.8 Q Q Q 0.9 Q 0.8 1.2 Q Q 0.5 34.0

 LPG ................................................... 5.0 6.1 6.3 5.4 6.2 6.4 3.8 2.8 6.7 7.1 5.9 15.3

 Central Warm-Air Furnace .............. 3.2 Q 2.1 2.8 4.2 4.7 3.1 2.5 2.5 2.8 2.6 20.2

 Room Heater ................................... 1.2 Q 3.1 1.8 1.4 1.2 Q Q 3.1 3.1 2.4 26.0

 Other ............................................... 0.6 Q Q Q Q Q Q Q 1.1 1.2 0.9 29.7

 Kerosene ........................................... 1.0 Q 2.0 1.3 1.7 Q Q Q 2.2 2.0 1.8 24.6

 Other ................................................. 0.4 Q Q Q 0.7 Q Q Q Q Q Q 56.1

 None .................................................. 0.9 Q Q 1.1 1.1 Q 0.8 Q 1.2 1.0 0.9 23.1

Amount of Heat Provided

by Main Heating Equipment

 All or Almost All ................................. 90.3 90.9 93.7 91.9 90.3 90.2 89.8 88.1 91.9 92.2 91.7 1.2

 About Three-Fourths ......................... 5.6 3.8 2.9 3.1 5.1 6.6 6.0 8.0 2.9 3.2 3.9 15.5

 Closer to One-Half ............................ 3.2 4.3 3.0 3.8 3.4 2.2 3.5 3.0 4.0 3.6 3.5 17.7

 No Main Equipment ........................... 0.9 Q Q 1.1 1.1 Q 0.8 Q 1.2 1.0 0.9 23.1

Age of Main

Heating Equipment

 Less than 2 Years ............................. 9.3 5.5 9.0 6.5 8.2 9.5 10.8 11.4 8.7 8.1 8.0 11.8

 2 to 4 Years ....................................... 11.0 5.6 7.3 9.0 9.1 13.1 12.6 13.8 7.4 8.2 8.4 10.6

 5 to 9 Years ....................................... 18.3 12.3 12.3 15.8 18.7 18.4 20.6 21.7 12.6 13.7 14.7 7.7

 10 to 19 Years ................................... 22.4 18.9 22.0 19.2 20.5 23.5 23.6 24.7 19.4 21.4 21.0 6.4

 20 Years or More .............................. 22.2 25.0 22.9 25.7 24.3 23.3 19.4 19.4 21.4 21.8 23.5 6.4

 Don’t Know ........................................ 15.8 31.7 26.0 22.7 18.0 11.3 12.2 8.2 29.3 25.8 23.5 7.7

 No Main Equipment ........................... 0.9 Q Q 1.1 1.1 Q 0.8 Q 1.2 1.0 0.9 23.1

See footnotes at end of table.

Energy Information Administration/Housing Characteristrics 1993 79
Table 3.12a. Space Heating by Family Income, 

 Million U.S. Households, 1993 (Continued)

Space Heating

Characteristics

RSE Column Factor:

Total

1993 Family Income

Below Poverty

Line Eligible

for

Federal

Assistance1

RSE

Row

Factors

Less

than

$5,000

$5,000

to

$9,999

$10,000

to

$14,999

$15,000

to

$24,999

$25,000

to

$34,999

$35,000

to

$49,999

$50,000

or

More

100

Percent

125

Percent

0.5 1.9 1.3 1.1 0.9 1.0 0.9 0.9 1.1 0.9 0.8

Secondary Heating Fuel and

Equipment

(more than one may apply)

 No ...................................................... 60.8 3.2 8.2 8.5 12.3 9.1 10.2 9.3 10.9 14.6 22.9 4.3

 Yes .................................................... 35.9 0.9 2.4 2.6 6.1 4.9 7.2 11.6 3.4 4.8 7.8 6.8

 Natural Gas ..................................... 4.1 Q 0.3 0.2 0.7 0.6 0.9 1.2 0.4 0.5 0.8 18.5

 Fireplace ....................................... 1.8 Q Q Q 0.3 0.3 0.4 0.8 Q Q 0.1 23.6

 Room Heater ................................. 1.0 Q Q Q 0.2 0.2 0.2 0.2 Q 0.2 0.2 32.7

 Central Warm-Air Furnace ............ 0.6 Q Q Q Q Q 0.2 0.2 Q Q Q 36.5

 Other Equipment ........................... 0.9 Q 0.1 Q 0.2 Q 0.2 Q 0.2 0.2 0.4 30.8

 Electricity ......................................... 14.6 0.5 1.3 1.5 2.9 1.9 2.5 3.9 1.9 2.5 4.0 8.9

 Portable Heater ............................. 9.8 0.4 1.0 1.1 2.2 1.3 1.5 2.3 1.4 1.9 3.1 10.3

 Built-in Electric Units ..................... 4.0 Q 0.2 0.3 0.7 0.5 0.9 1.3 0.3 0.4 0.6 20.0

 Other Equipment ........................... 0.8 Q 0.1 Q 0.1 Q Q 0.2 0.2 0.3 0.3 22.9

 Fuel Oil ............................................ 0.4 Q Q Q Q Q Q 0.1 Q Q 0.1 42.2

 Wood ............................................... 19.0 0.2 0.5 0.7 2.5 2.5 4.2 8.4 0.8 1.2 2.2 11.5

 Fireplace ....................................... 15.9 0.2 0.4 0.4 1.9 2.0 3.5 7.6 0.6 0.8 1.6 13.4

 Heating Stove ................................ 3.4 Q Q 0.4 0.6 0.5 0.9 1.0 0.2 0.4 0.7 17.4

 Other Equipment ........................... 0.2 Q Q Q Q Q Q Q Q Q Q 57.9

 LPG ................................................. 1.2 Q 0.2 Q 0.2 0.2 0.2 0.3 0.2 0.3 0.4 27.4

 Kerosene ......................................... 2.6 Q 0.3 0.3 0.6 0.4 0.5 0.5 0.4 0.6 0.9 22.2

 Other ............................................... 0.4 Q Q Q Q Q Q 0.1 Q Q Q 44.1

1 Below 150 percent of poverty line or 60 percent of median State income.

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to

totals. • See "Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 1993 Residential Energy Consumption

Survey. (For specific titles of forms, see Appendix D.)

80 Energy Information Administration/Housing Characteristrics 1993
Table 3.12b. Space Heating by Family Income, 

 Percent of U.S. Households, 1993 (Continued)

Space Heating

Characteristics

RSE Column Factor:

Total

1993 Family Income

Below Poverty

Line Eligible

for

Federal

Assistance1

RSE

Row

Factors

Less

than

$5,000

$5,000

to

$9,999

$10,000

to

$14,999

$15,000

to

$24,999

$25,000

to

$34,999

$35,000

to

$49,999

$50,000

or

More

100

Percent

125

Percent

0.5 1.9 1.3 1.1 0.9 1.1 0.9 0.9 1.1 0.9 0.8

Secondary Heating Fuel and

Equipment

(more than one may apply)

 No ...................................................... 62.9 77.8 77.1 76.3 66.7 65.0 58.7 44.5 76.1 75.3 74.5 2.6

 Yes .................................................... 37.1 22.2 22.9 23.7 33.3 35.0 41.3 55.5 23.9 24.7 25.5 6.0

 Natural Gas ..................................... 4.2 Q 3.2 2.1 3.7 4.2 5.4 5.7 2.8 2.6 2.6 18.3

 Fireplace ....................................... 1.9 Q Q Q 1.6 1.9 2.2 3.8 Q Q 0.5 23.2

 Room Heater ................................. 1.0 Q Q Q 0.8 1.4 1.1 0.8 Q 1.0 0.8 32.6

 Central Warm-Air Furnace ............ 0.6 Q Q Q Q Q 1.2 0.8 Q Q Q 36.4

 Other Equipment ........................... 0.9 Q 1.3 Q 1.2 Q 1.1 Q 1.3 1.1 1.2 30.6

 Electricity ......................................... 15.1 13.2 11.9 13.5 16.0 13.9 14.3 18.7 13.1 13.0 13.2 8.4

 Portable Heater ............................. 10.1 10.0 9.3 9.5 12.0 9.4 8.6 11.1 9.6 9.6 10.0 9.8

 Built-in Electric Units ..................... 4.1 Q 1.7 2.7 4.0 3.7 5.2 6.1 2.4 2.3 2.1 19.9

 Other Equipment ........................... 0.8 Q 1.0 Q 0.7 Q Q 1.0 1.6 1.3 1.1 23.2

 Fuel Oil ............................................ 0.4 Q Q Q Q Q Q 0.5 Q Q 0.4 41.4

 Wood ............................................... 19.7 5.2 4.8 6.4 13.5 17.5 24.3 40.1 5.4 6.2 7.3 10.9

 Fireplace ....................................... 16.5 3.9 3.8 3.4 10.4 14.4 20.0 36.1 4.2 4.1 5.3 12.8

 Heating Stove ................................ 3.6 Q Q 3.2 3.1 3.8 4.9 4.6 1.3 2.2 2.1 17.3

 Other Equipment ........................... 0.2 Q Q Q Q Q Q Q Q Q Q 55.7

 LPG ................................................. 1.3 Q 1.6 Q 1.1 1.8 1.2 1.4 1.6 1.7 1.3 27.2

 Kerosene ......................................... 2.7 Q 2.6 2.7 3.3 2.6 2.7 2.4 2.9 3.1 3.0 22.1

 Other ............................................... 0.4 Q Q Q Q Q Q 0.6 Q Q Q 43.5

1 Below 150 percent of poverty line or 60 percent of median State income.

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to

totals. • See "Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 1993 Residential Energy Consumption

Survey. (For specific titles of forms, see Appendix D.)

Energy Information Administration/Housing Characteristrics 1993 81