Table HC5-1a. Appliances by Climate Zone, 

 Million U.S. Households, 2001

Appliance Types

and Characteristics

RSE Column Factor:

Total

Climate Zone1

RSE

Row

Factors

Fewer than 2,000 CDD and --

2,000 CDD

or More

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

0.4 1.9 1.1 1.1 1.2 1.1

Total .................................................. 107.0 9.2 28.6 24.0 21.0 24.1 7.8

Kitchen Appliances

 Cooking Appliances

 Oven .............................................. 101.7 9.1 27.9 23.1 19.4 22.2 7.8

 1 ................................................... 95.2 8.7 26.0 21.6 17.7 21.2 7.9

 2 or More ..................................... 6.5 0.4 1.9 1.5 1.7 1.0 14.7

 Most Used Oven ........................... 101.7 9.1 27.9 23.1 19.4 22.2 7.8

 Electric ......................................... 63.0 6.4 16.4 13.3 11.3 15.5 8.1

 Natural Gas .................................. 34.3 1.8 10.4 8.9 7.4 5.9 9.5

 LPG .............................................. 4.4 1.0 1.0 0.9 0.7 0.8 24.1

 Other ............................................ Q Q Q Q Q Q NF

 Most Used Self-Cleaning Oven ... 48.2 4.7 15.1 10.8 8.1 9.6 7.8

 Continuous ................................... 11.2 0.9 3.7 2.3 1.8 2.5 15.7

 Manual Start ................................ 37.0 3.7 11.4 8.5 6.3 7.1 8.5

 Range ............................................ 105.7 9.2 28.3 23.8 20.6 23.8 7.8

 1 ................................................... 100.5 8.9 26.7 22.6 19.3 23.0 7.9

 2 or More ..................................... 5.2 0.3 1.5 1.2 1.3 0.7 15.8

 Most Used Range ......................... 105.7 9.2 28.3 23.8 20.6 23.8 7.8

 Electric ......................................... 64.2 6.4 16.3 13.6 11.7 16.3 8.3

 Natural Gas .................................. 36.7 1.8 10.9 9.3 8.1 6.7 9.5

 LPG .............................................. 4.7 1.0 1.1 1.0 0.8 0.8 23.7

 Other ............................................ Q Q Q Q Q Q NF

 Built-in/Stove-top Grill ................. 2.9 Q 0.5 0.6 0.6 1.0 22.3

 Electric ......................................... 1.8 Q 0.4 0.3 0.3 0.6 28.0

 Natural Gas .................................. 1.0 Q Q 0.3 0.2 0.3 31.7

 LPG .............................................. Q Q Q Q Q Q NF

 Other ............................................ Q Q Q Q Q Q NF

 Refrigerators and Freezers

 Refrigerators ............................... 106.8 9.2 28.6 24.0 20.9 24.1 7.8

 1 ................................................... 88.7 7.3 23.3 20.0 17.6 20.6 8.0

 2 or More ..................................... 18.1 2.0 5.3 4.1 3.3 3.5 9.9

 Most-Used Refrigerator

 Defrost Method

 Frost-Free .................................. 96.9 8.0 25.7 21.8 19.1 22.3 7.8

 Manual ....................................... 9.9 1.3 2.9 2.2 1.8 1.7 14.5

 Type of Refrigerator

 2-Doors (top and bottom) ........... 73.0 6.8 20.5 16.6 13.3 15.8 7.1

 2-Doors (side-by-side) ............... 27.1 1.8 6.5 5.7 6.4 6.7 9.3

 Regular (single door) ................. 5.7 0.5 1.4 1.5 1.0 1.3 15.3

 Half-Size/Other .......................... 1.0 Q Q 0.2 0.3 0.3 28.5

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC5-1a. Appliances by Climate Zone, 

 Million U.S. Households, 2001 (Continued)

Appliance Types

and Characteristics

RSE Column Factor:

Total

Climate Zone1

RSE

Row

Factors

Fewer than 2,000 CDD and --

2,000 CDD

or More

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

0.4 1.9 1.1 1.1 1.2 1.1

 Age of Refrigerator

 Less than 2 Years ...................... 14.5 0.9 4.0 3.0 3.0 3.6 10.5

 2 to 4 Years ............................... 20.7 1.6 5.0 5.3 4.1 4.6 10.1

 5 to 9 Years ............................... 31.1 2.7 7.8 6.8 6.6 7.3 7.4

 10 to 19 Years ........................... 26.7 2.7 7.6 5.8 5.2 5.4 10.6

 20 Years or More ....................... 7.1 0.9 2.2 1.6 0.9 1.5 15.6

 Don’t Know ................................ 6.7 0.5 2.0 1.5 1.1 1.6 16.1

 Size of Refrigerator

 Very Small (Less than 11 cf) ...... 0.6 Q Q Q Q Q 59.8

 Small (11-14 cf) ......................... 5.7 0.7 1.6 1.2 0.8 1.3 17.7

 Medium (15-18 cf) ...................... 52.2 4.6 14.2 12.6 10.0 10.8 8.2

 Large (19-22 cf) ......................... 43.0 3.5 11.5 9.0 8.9 10.2 7.8

 Very Large (23 or More cf) ......... 5.3 0.3 1.1 1.1 1.1 1.6 18.3

 Through-the-Door Ice/Water

 Service

 Yes ............................................. 22.1 1.2 5.1 4.4 5.4 5.9 9.6

 No .............................................. 84.9 8.0 23.6 19.6 15.6 18.1 7.9

 Freezer (separate) ........................ 34.2 4.3 9.3 7.6 6.2 6.8 11.2

 1 .................................................. 30.8 3.5 8.6 7.0 5.7 6.1 10.6

 2 or more .................................... 3.4 0.8 0.8 0.6 0.5 0.8 25.0

 Most-Used Freezer

 Defrost Method

 Frost-Free .................................... 12.2 1.3 3.2 2.4 2.0 3.3 13.4

 Manual ......................................... 22.0 3.0 6.1 5.2 4.2 3.6 12.4

 Type of Freezer

 Upright ......................................... 17.8 1.9 5.4 3.8 3.4 3.4 10.5

 Chest ......................................... 16.5 2.4 4.0 3.8 2.8 3.5 14.9

 Age of Freezer

 Less than 2 Years ........................ 3.1 0.3 0.9 0.6 0.6 0.8 20.3

 2 to 4 Years ................................. 4.6 0.5 1.5 1.0 0.7 0.9 16.7

 5 to 9 Years ................................. 6.8 0.9 1.7 1.6 1.2 1.4 15.0

 10 to 19 Years ............................. 11.7 1.4 2.9 2.7 2.4 2.3 13.6

 20 Years or More ......................... 7.3 1.2 2.2 1.5 1.2 1.2 17.2

 Don’t Know .................................. 0.6 Q Q Q Q Q 49.0

 Freezer Size

 Very Small (Less than 11 cf) ........ 2.5 0.4 0.7 0.5 0.5 0.4 21.4

 Small (11-14 cf) ........................... 8.2 1.0 2.3 1.6 1.4 1.9 15.1

 Medium (15-18 cf) ........................ 13.3 1.5 3.5 3.1 2.1 2.9 14.7

 Large (19-22 cf) ........................... 8.7 1.3 2.3 2.0 1.6 1.4 13.7

 Very Large (23 or More cf) ........... 1.6 0.1 0.4 0.3 0.5 Q 27.8

 Other Kitchen Appliances

 Dishwasher .................................... 56.7 4.7 14.7 12.3 11.2 13.7 7.4

 Electric Coffee Makers ................... 65.5 6.7 18.0 14.7 12.1 13.9 7.9

 Electric Toaster Oven .................... 36.1 1.9 8.2 9.1 7.6 9.3 8.8

 Microwave Oven ............................ 92.1 8.8 24.8 20.0 17.9 20.7 7.1

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC5-1a. Appliances by Climate Zone, 

 Million U.S. Households, 2001 (Continued)

Appliance Types

and Characteristics

RSE Column Factor:

Total

Climate Zone1

RSE

Row

Factors

Fewer than 2,000 CDD and --

2,000 CDD

or More

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

0.4 1.9 1.1 1.1 1.2 1.1

Households With Electric

Air-Conditioning Equipment ........... 82.9 5.4 20.9 20.2 14.2 22.1 8.1

 Air Conditioners Not Used ............... 2.1 Q 0.4 0.3 0.8 0.4 22.7

Households Using Electric

Air-Conditioning2 ............................. 80.8 5.3 20.5 19.9 13.4 21.8 8.2

Type of Electric Air-Conditioning

Used

 Central Air-Conditioning3 ................. 57.5 3.1 12.9 12.7 10.5 18.2 9.2

 Without a Heat Pump ..................... 46.2 3.0 12.1 9.8 7.0 14.3 10.7

 With a Heat Pump .......................... 11.3 Q 0.9 2.9 3.5 3.9 19.1

 Room Air-Conditioning ..................... 23.3 2.2 7.6 7.2 2.9 3.6 11.3

 1 Unit ............................................. 12.8 1.4 4.5 3.4 1.9 1.5 13.5

 2 Units ............................................ 7.5 0.5 2.2 2.5 0.8 1.4 13.8

 3 or More Units .............................. 3.0 0.2 0.8 1.2 0.2 0.7 20.1

Entertainment

 Color Television Sets .................... 105.8 9.2 28.4 23.8 20.6 23.8 7.8

 1 ..................................................... 29.3 3.3 7.8 6.3 5.2 6.8 9.7

 2 ..................................................... 38.4 3.2 10.3 8.8 7.5 8.6 7.5

 3 ..................................................... 23.3 1.7 6.3 5.2 4.8 5.3 8.8

 4 ..................................................... 10.2 0.6 2.9 2.4 2.2 2.0 13.2

 5 or More ....................................... 4.5 0.3 1.2 1.1 0.8 1.2 14.8

 Large Screen Television Sets ....... 36.6 3.7 9.3 7.7 6.9 9.0 10.1

 1 ..................................................... 27.3 2.8 7.1 5.6 5.1 6.7 10.4

 2 ..................................................... 7.9 0.8 1.8 1.7 1.7 2.0 14.5

 3 or More ....................................... 1.4 Q 0.4 0.5 Q Q 49.4

 Cable/Satellite Dish Antennas ...... 82.2 7.1 22.6 19.0 15.9 17.6 7.1

 Cable Network ............................... 68.3 5.4 18.9 16.5 13.1 14.4 7.5

 Satellite Dish Antenna ................... 12.0 1.5 3.2 2.3 2.5 2.5 13.7

 Both ............................................... 1.9 0.3 0.5 0.3 0.3 0.6 26.4

 Video Cassette Recorders

 (VCRs) and DVD Players ............... 96.1 8.1 25.8 22.1 18.8 21.3 7.9

 1 ..................................................... 52.3 4.7 13.2 12.2 10.4 11.9 8.1

 2 ..................................................... 29.0 2.4 8.1 6.6 5.9 6.0 9.5

 3 or More ....................................... 14.7 0.9 4.6 3.3 2.6 3.4 12.2

 Stereo Equipment .......................... 80.3 7.0 22.0 17.4 16.2 17.7 6.5

 Portable/Boom Box ........................ 26.1 3.3 7.6 5.4 4.9 4.9 10.3

 Compact Stereo System ................ 36.5 3.5 9.5 8.0 7.1 8.5 7.7

 Component Stereo System ............ 36.3 2.9 10.3 8.4 7.3 7.4 8.5

 Other System ................................. 3.1 0.4 1.2 0.5 0.5 0.6 19.3

Clothes Washers and Dryers

 Clothes Washer .............................. 84.1 7.9 22.6 17.9 16.3 19.4 7.4

 Top loading .................................... 81.6 7.6 21.8 17.2 15.9 19.1 7.6

 Front loading .................................. 2.5 0.2 0.8 0.7 0.4 0.3 20.8

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC5-1a. Appliances by Climate Zone, 

 Million U.S. Households, 2001 (Continued)

Appliance Types

and Characteristics

RSE Column Factor:

Total

Climate Zone1

RSE

Row

Factors

Fewer than 2,000 CDD and --

2,000 CDD

or More

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

0.4 1.9 1.1 1.1 1.2 1.1

 Clothes Dryer ................................. 78.8 7.6 21.5 16.7 15.0 18.0 7.7

 Electric ........................................... 61.1 6.2 15.3 13.5 11.1 15.0 9.6

 Natural Gas .................................... 16.9 1.2 6.1 3.0 3.8 2.9 12.8

 LPG ................................................ 0.8 0.2 0.2 Q Q Q 33.0

Water Heater Equipment

 Water Heaters ................................. 107.0 9.2 28.6 24.0 21.0 24.1 7.8

 Electric ........................................... 40.8 4.0 7.3 8.5 8.1 12.8 10.4

 For One Housing Unit .................. 37.7 3.7 6.6 7.7 7.8 12.0 11.5

 For Two or More Units ................. 3.1 Q 0.7 0.8 0.3 0.9 25.7

 Natural Gas .................................... 58.0 3.7 19.1 12.4 12.2 10.6 8.9

 For One Housing Unit .................. 50.9 3.3 17.1 9.6 10.7 10.2 9.5

 For Two or More Units ................. 7.1 0.4 2.1 2.8 1.4 0.4 20.2

 Fuel Oil .......................................... 4.6 0.8 1.4 2.4 Q Q 21.1

 For One Housing Unit .................. 3.0 0.7 1.2 1.2 Q Q 25.6

 For Two or More Units ................. 1.6 Q 0.2 1.2 Q Q 33.9

 LPG ............................................... 2.9 0.6 0.8 0.6 0.5 0.4 27.7

 Other .............................................. 0.5 Q Q Q Q Q 86.5

 No Water Heater ............................ Q Q Q Q Q Q NF

Water Heater (for one housing

unit) ................................................... 95.0 8.4 25.6 19.2 19.1 22.8 8.5

 Age

 Less than 2 Years .......................... 11.4 0.9 3.3 2.3 2.2 2.7 12.3

 2 to 4 Years ................................... 17.3 1.6 4.9 3.5 3.6 3.8 11.6

 5 to 9 Years ................................... 25.3 2.4 7.0 4.7 5.0 6.1 10.1

 10 to 19 Years ............................... 21.7 1.7 5.5 4.7 4.3 5.5 11.3

 20 Years or More ........................... 7.4 0.9 1.8 1.3 1.4 2.1 15.8

 Don’t Know .................................... 9.4 0.4 2.4 2.0 2.3 2.3 14.3

 No Separate Heater ....................... 2.5 0.6 0.7 0.8 0.3 0.3 22.8

 No Water Heater .............................. Q Q Q Q Q Q NF

 Water Heaters for

 Two or More Units ......................... 11.9 0.9 3.0 4.9 1.9 1.3 15.5

 Size

 Small .............................................. 12.2 0.9 3.5 1.9 2.2 3.7 14.9

 Medium .......................................... 49.4 4.2 12.8 9.5 10.8 12.2 8.5

 Large .............................................. 25.6 2.2 7.2 6.0 5.0 5.2 11.6

 Don’t Know .................................... 3.8 0.4 1.3 0.8 0.4 0.9 24.8

 No Separate Heater ....................... 2.5 0.6 0.7 0.8 0.3 0.3 22.8

 No Water Heater .............................. Q Q Q Q Q Q NF

 Water Heaters for

 Two or More Units ......................... 11.9 0.9 3.0 4.9 1.9 1.3 15.5

Heaters (other) 

 Hot Tub or Spa (heaters) ................. 4.4 0.3 1.0 0.8 1.1 1.2 17.9

 Electric ........................................... 3.3 0.3 0.9 0.6 0.6 0.8 20.6

 Natural Gas .................................... 0.9 Q Q Q 0.4 0.3 33.5

 LPG/Other ...................................... Q Q Q Q Q Q NF

 Portable Space (heaters) ................. 13.4 1.3 3.7 3.0 2.8 2.5 11.4

 Electric ........................................... 11.9 1.2 3.4 2.5 2.5 2.3 12.1

 Kerosene ....................................... 1.8 0.2 0.4 0.6 0.3 Q 22.9

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC5-1a. Appliances by Climate Zone, 

 Million U.S. Households, 2001 (Continued)

Appliance Types

and Characteristics

RSE Column Factor:

Total

Climate Zone1

RSE

Row

Factors

Fewer than 2,000 CDD and --

2,000 CDD

or More

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

0.4 1.9 1.1 1.1 1.2 1.1

 Swimming Pool (heaters) ................. 1.2 Q 0.3 0.3 0.3 0.3 38.1

 Natural Gas .................................... 0.8 Q Q Q Q Q 63.9

 Electric/LPG/Other ......................... 0.4 Q Q Q Q Q 78.6

 Waterbed Heaters ........................... 5.5 0.7 1.8 1.3 0.6 1.2 18.4

 1 ..................................................... 4.8 0.7 1.6 1.0 0.5 1.1 20.2

 2 or More ....................................... 0.8 Q 0.3 Q Q Q 45.1

 Used All Year ................................. 5.0 0.6 1.7 1.2 0.5 1.0 19.3

 1 ................................................... 4.3 0.5 1.4 1.0 0.4 1.0 20.9

 2 or More .................................... 0.6 Q 0.2 Q Q Q 49.3

Other Appliances

 Automobile Block/Engine/

 Battery Heater .................................. 2.3 1.0 0.9 Q Q Q 24.7

 Ceiling Fans ..................................... 69.6 5.9 18.1 14.2 12.3 19.1 8.0

 1 ..................................................... 22.0 2.5 6.9 4.9 3.5 4.1 10.7

 2 ..................................................... 15.1 1.5 4.5 3.0 2.8 3.4 12.1

 3 or more ....................................... 32.6 2.0 6.7 6.3 6.0 11.6 10.6

 Electrtic Dehumidifier ....................... 12.1 2.6 5.4 3.1 0.6 0.4 16.0

 Electrtic Humidifier ........................... 15.6 2.6 6.9 3.7 1.4 1.0 14.6

 Evaporative/Swamp Cooler ............. 2.7 Q 0.3 Q 0.6 1.5 26.6

 Heated Aquarium ............................. 4.5 0.3 1.5 1.0 0.8 0.8 16.6

 Outdoor Gas Light4 .......................... 0.5 Q Q 0.2 Q Q 30.6

 Pumps (Electric) .............................. 21.2 2.6 6.4 4.0 3.4 4.7 13.4

 Rechargeable Tools/Appliances ...... 47.7 5.0 13.9 10.3 8.6 9.9 8.9

 Swimming Pool (with filters) ............. 6.5 0.3 1.6 1.4 1.2 2.0 16.1

 Well Water ....................................... 13.8 2.3 4.8 2.6 1.7 2.4 18.6

1 One of five climatically distinct areas, determined according to the 30-year average (1961-1990) of the annual heating and cooling degree-days. For this

report, the heating or cooling degree-days are a measure of how cold or how hot a location is over a period of one year, relative to a base temperature of 65

degrees Fahrenheit. A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby weather station. 2 The number of households, where the end use is electric air-conditioning, does not include households that did not use their equipment (2.1 million). It does

include the small number of households where the fuel for central air-conditioning equipment was something other than electricity; those households were treated

as if the fuel was electricity. 3 The 2001 RECS reported 800,000 households having both central air-conditioning and room/wall air-conditioners, with 600,000 households using both central

air-conditioning and 200,000 households using only room/wall air-conditioners. These room/wall air-conditioners are not included in the count of 23.3 million

households using room/wall air-conditioners. Note: This applies to all occurrences of central air-conditioning. 4 Includes LPG and natural gas.

cf = Cubic feet.

NF = No applicable RSE row factor.

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 2001 Residential Energy Consumption Survey.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables