Table 3.13. Total Air-Conditioning in U.S. Households, 1993

Housing Unit and Household

Characteristics

RSE Column Factor:

Total

Households

(millions)

Cooled

Floorspace

(square feet

per

household)

Number of

Cooling

Degree-Days

per

Household

Air-Conditioner Use in Summer 19931

(percent of households)

RSE

Row

Factors

1993 Normal Total

Not at

All

Only a

Few

Times

Quite

a Bit

All

Summer

0.8 0.6 0.6 0.6 3.5 0.9 1.4 1.2

Total .................................................... 66.1 1,416 1,536 1,438 100.0 3.4 38.3 22.2 36.1 2.7

Type of Air-Conditioning2

 Central Air-Conditioning .................... 42.1 1,756 1,679 1,587 100.0 2.4 30.5 21.2 45.9 3.4

 Electric ............................................ 41.9 1,758 1,682 1,589 100.0 2.3 30.4 21.3 45.9 3.4

 Without a Heat Pump .................... 30.1 1,777 1,551 1,480 100.0 2.4 32.1 22.0 43.4 3.8

 With a Heat Pump ......................... 11.9 1,710 2,015 1,867 100.0 2.2 26.1 19.4 52.3 6.0

 Gas3 ................................................ 0.1 1,151 848 789 100.0 Q Q Q Q 44.1

 Room Air-Conditioning ...................... 25.7 877 1,326 1,219 100.0 5.5 50.1 24.2 20.3 4.6

 1 Unit ............................................... 17.3 741 1,282 1,187 100.0 7.3 51.9 21.6 19.2 4.7

 2 Units ............................................. 6.3 1,053 1,385 1,261 100.0 Q 47.7 28.8 22.2 9.3

 3 or More Units ................................ 2.2 1,469 1,509 1,355 100.0 Q 42.8 31.4 23.1 12.0

Census Region and Division

 Northeast ........................................... 11.3 1,220 931 726 100.0 3.3 54.5 28.3 13.9 5.3

 New England ................................... 2.3 1,116 755 543 100.0 5.5 55.9 23.3 15.3 8.8

 Middle Atlantic ................................. 9.0 1,246 975 771 100.0 2.7 54.2 29.5 13.6 6.1

 Midwest ............................................. 17.1 1,607 816 834 100.0 4.2 50.4 23.9 21.5 5.4

 East North Central ........................... 11.2 1,613 794 768 100.0 4.0 50.8 24.3 20.9 6.5

 West North Central .......................... 5.9 1,596 858 959 100.0 4.5 49.7 23.0 22.7 8.6

 South ................................................. 29.9 1,431 2,211 2,064 100.0 1.7 20.8 19.7 57.7 3.7

 South Atlantic .................................. 15.2 1,433 2,225 2,003 100.0 1.7 21.7 20.6 56.0 5.2

 East South Central .......................... 5.3 1,536 1,772 1,654 100.0 Q 21.3 22.1 55.2 6.8

 West South Central ......................... 9.4 1,369 2,437 2,397 100.0 1.9 19.2 16.9 62.0 6.7

 West .................................................. 7.8 1,224 1,408 1,399 100.0 8.4 55.1 19.4 17.2 8.3

 Mountain ......................................... 2.2 1,271 2,323 2,259 100.0 4.6 43.3 20.8 31.3 14.4

 Pacific .............................................. 5.6 1,205 1,047 1,059 100.0 9.9 59.7 18.8 11.6 10.8

Urban Status

 Urban ................................................ 52.1 1,413 1,580 1,463 100.0 3.7 38.2 22.7 35.3 3.1

 Central City ..................................... 19.7 1,142 1,750 1,625 100.0 4.1 37.1 23.0 35.8 4.6

 Suburban ......................................... 32.4 1,577 1,477 1,364 100.0 3.5 38.9 22.6 35.0 3.9

 Rural .................................................. 14.0 1,428 1,372 1,348 100.0 2.2 38.7 20.3 38.8 5.4

Cooling Degree-Days (CDD)-1993

 2,000 or More .................................... 17.3 1,359 2,845 2,709 100.0 1.7 19.9 16.7 61.7 5.6

 1,000 to 1,999 ................................... 25.2 1,438 1,454 1,314 100.0 2.9 31.6 26.9 38.6 5.1

 500 to 999 ......................................... 18.2 1,402 772 696 100.0 4.3 54.7 23.7 17.4 5.6

 Fewer than 500 ................................. 5.5 1,539 334 479 100.0 8.3 72.2 13.2 6.3 8.2

Year of Construction

 1939 or Before .................................. 10.3 1,201 1,137 1,066 100.0 4.2 53.7 22.6 19.5 6.6

 1940 to 1949 ..................................... 3.9 1,204 1,400 1,281 100.0 Q 41.7 26.1 29.5 9.1

 1950 to 1959 ..................................... 8.7 1,376 1,519 1,402 100.0 4.3 40.5 23.1 32.1 6.8

 1960 to 1969 ..................................... 11.0 1,409 1,491 1,381 100.0 3.6 39.5 20.9 36.1 6.5

 1970 to 1979 ..................................... 12.8 1,379 1,624 1,544 100.0 3.8 35.7 22.0 38.4 5.9

 1980 to 1984 ..................................... 6.9 1,433 1,853 1,747 100.0 2.3 31.5 18.8 47.5 6.9

 1985 to 1987 ..................................... 4.7 1,622 1,824 1,697 100.0 Q 27.3 28.1 43.8 9.4

 1988 to 1990 ..................................... 3.9 1,722 1,554 1,459 100.0 3.2 33.1 19.7 44.1 8.3

 1991 to 19934 ................................... 3.9 1,835 1,677 1,593 100.0 3.7 24.9 21.3 50.2 9.8

Number of Rooms AirConditioned in Summer 1993

 None ................................................. 1.8 -- 1,182 1,134 100.0 94.4 -- -- -- 6.5

 One or Two ....................................... 11.3 432 1,288 1,161 100.0 3.1 59.7 21.3 15.9 4.8

 Three ................................................. 7.5 769 1,521 1,402 100.0 Q 47.4 25.1 26.6 5.6

 Four .................................................. 9.7 1,066 1,647 1,543 100.0 Q 41.3 25.3 32.8 6.1

 Five or More ...................................... 35.8 2,015 1,607 1,522 100.0 Q 30.5 22.1 47.1 3.4

See footnotes at end of table.

82 Energy Information Administration/Housing Characteristrics 1993
Table 3.13. Total Air-Conditioning in U.S. Households, 1993 (Continued)

Housing Unit and Household

Characteristics

RSE Column Factor:

Total

Households

(millions)

Cooled

Floorspace

(square feet

per

household)

Number of

Cooling

Degree-Days

per

Household

Air-Conditioner Use in Summer 19931

(percent of households)

RSE

Row

Factors

1993 Normal Total

Not at

All

Only a

Few

Times

Quite

a Bit

All

Summer

0.8 0.6 0.6 0.6 3.5 0.9 1.4 1.2

Type and Ownership of Housing

Unit

 Single-Family Detached .................... 41.2 1,725 1,508 1,428 100.0 3.1 36.7 21.0 39.2 3.4

 Owned ............................................. 36.6 1,794 1,478 1,398 100.0 3.0 36.6 21.1 39.2 3.5

 Rented ............................................. 4.6 1,179 1,748 1,667 100.0 3.8 37.2 19.8 39.2 8.6

 Single-Family Attached ..................... 5.3 1,327 1,600 1,438 100.0 3.7 35.0 24.4 36.9 9.0

 Owned ............................................. 3.5 1,473 1,585 1,428 100.0 Q 37.0 24.0 34.6 9.9

 Rented ............................................. 1.7 1,030 1,629 1,460 100.0 Q 30.8 25.0 41.6 13.3

 Multifamily (2 to 4 units) .................... 4.1 800 1,496 1,358 100.0 4.2 43.4 26.5 25.8 9.6

 Owned ............................................. 0.9 1,138 1,390 1,254 100.0 Q 47.7 20.6 25.0 19.3

 Rented ............................................. 3.1 698 1,528 1,389 100.0 Q 42.2 28.3 26.0 10.7

 Multifamily (5 or more units) .............. 11.6 760 1,612 1,482 100.0 3.6 45.4 24.0 27.0 7.3

 Owned ............................................. 1.3 1,067 1,656 1,559 100.0 Q 48.2 19.1 29.2 27.1

 Rented ............................................. 10.3 720 1,606 1,472 100.0 3.6 45.1 24.6 26.7 6.7

 Mobile Home ..................................... 3.9 860 1,567 1,501 100.0 4.8 32.9 22.6 39.7 9.3

 Owned ............................................. 3.2 912 1,558 1,505 100.0 3.5 31.7 23.8 41.1 10.2

 Rented ............................................. 0.7 611 1,608 1,486 100.0 Q 38.3 17.1 33.4 16.3

1993 Family Income Category

 Less than $5,000 ............................... 2.5 742 1,740 1,596 100.0 Q 33.3 21.8 40.1 9.5

 $5,000 to $9,999 ............................... 6.4 813 1,598 1,504 100.0 5.1 44.8 20.8 29.3 7.2

 $10,000 to $14,999 ........................... 6.7 957 1,593 1,490 100.0 5.8 45.6 18.6 30.0 6.8

 $15,000 to $19,999 ........................... 6.1 1,174 1,615 1,517 100.0 2.5 42.7 21.9 32.9 8.0

 $20,000 to $24,999 ........................... 5.7 1,188 1,525 1,450 100.0 2.7 40.4 22.1 34.8 7.1

 $25,000 to $34,999 ........................... 10.0 1,414 1,520 1,429 100.0 3.8 39.4 20.6 36.2 5.8

 $35,000 to $49,999 ........................... 12.8 1,564 1,519 1,430 100.0 2.8 36.2 23.1 37.9 5.2

 $50,000 to $74,999 ........................... 9.3 1,836 1,464 1,366 100.0 2.7 31.8 23.0 42.5 5.4

 $75,000 or More ................................ 6.6 2,265 1,436 1,312 100.0 Q 32.0 27.6 38.5 7.2

Below Poverty Line

 100 Percent ....................................... 8.2 787 1,707 1,599 100.0 5.2 42.6 20.7 31.5 6.0

 125 Percent ....................................... 11.5 833 1,639 1,538 100.0 5.2 43.7 21.2 29.8 5.2

Eligible for Federal Assistance5 ...... 18.5 926 1,607 1,499 100.0 4.7 44.3 20.1 30.9 4.6

1 "Air-Conditioner Use" refers to the central air-conditioner or (if the household has only room air-conditioners) to the most-used room air-conditioner. 2 An estimated 1.7 million households have both a central air-conditioner and one or more room air-conditioners. 3 Gas includes LPG and natural gas. 4 Does not include all new construction for 1993. 5 Below 150 percent of poverty line or 60 percent of median State income.

-- = 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 83
Table 3.14. Central Air-Conditioning in U.S. Households, 1993

Housing Unit and Household

Characteristics

RSE Column Factor:

Total

Households

(millions)

Cooled

Floorspace

(square feet

per

household)

Number of

Cooling

Degree-Days

per

Household

Air-Conditioner Use in Summer 19931

(percent of households)

RSE

Row

Factors

1993 Normal Total

Not at

All

Only a

Few

Times

Quite a

Bit

All

Summer

1.0 0.5 0.6 0.6 4.1 1.1 1.5 1.0

Total .................................................... 42.1 1,756 1,679 1,587 100.0 2.4 30.5 21.2 45.9 3.4

Type of Central Air-Conditioning2

 Electric .............................................. 41.9 1,758 1,682 1,589 100.0 2.3 30.4 21.3 45.9 3.4

 Without a Heat Pump ...................... 30.1 1,777 1,551 1,480 100.0 2.4 32.1 22.0 43.4 3.8

 With a Heat Pump ........................... 11.9 1,710 2,015 1,867 100.0 2.2 26.1 19.4 52.3 6.0

 Gas3 .................................................. 0.1 1,151 848 789 100.0 Q Q Q Q 46.3

Census Region and Division

 Northeast ........................................... 3.9 2,059 899 690 100.0 Q 43.1 30.9 23.5 7.8

 New England ................................... 0.6 2,210 736 525 100.0 Q 38.4 32.2 27.9 15.5

 Middle Atlantic ................................. 3.3 2,030 929 721 100.0 Q 43.9 30.6 22.7 8.5

 Midwest ............................................. 10.8 2,017 845 867 100.0 2.0 45.1 25.0 27.9 7.3

 East North Central ........................... 6.9 2,027 811 794 100.0 Q 45.0 26.0 26.8 7.7

 West North Central .......................... 3.9 1,997 905 997 100.0 Q 45.2 23.3 29.8 12.6

 South ................................................. 21.8 1,644 2,259 2,115 100.0 1.6 16.4 17.3 64.7 4.6

 South Atlantic .................................. 11.3 1,658 2,284 2,072 100.0 1.7 17.7 19.4 61.2 6.4

 East South Central .......................... 3.5 1,815 1,793 1,670 100.0 Q 15.2 18.7 64.9 9.2

 West South Central ......................... 7.0 1,537 2,450 2,405 100.0 Q 14.9 13.3 70.2 7.5

 West .................................................. 5.5 1,476 1,573 1,544 100.0 6.4 48.8 22.3 22.5 9.3

 Mountain ......................................... 1.7 1,474 2,737 2,620 100.0 Q 37.5 22.1 38.5 13.2

 Pacific .............................................. 3.8 1,478 1,048 1,059 100.0 8.4 53.9 22.4 15.3 12.1

Urban Status

 Urban ................................................ 34.5 1,740 1,724 1,617 100.0 2.5 30.6 21.9 45.0 3.9

 Central City ..................................... 11.7 1,455 1,975 1,865 100.0 2.1 30.2 19.0 48.6 6.5

 Suburban ......................................... 22.8 1,886 1,595 1,490 100.0 2.7 30.8 23.3 43.2 4.6

 Rural .................................................. 7.6 1,830 1,478 1,451 100.0 1.9 30.2 18.3 49.6 6.1

Cooling Degree-Days (CDD)-1993

 2,000 or More .................................... 13.6 1,524 2,854 2,724 100.0 1.1 16.5 14.2 68.1 5.7

 1,000 to 1,999 ................................... 16.5 1,752 1,456 1,324 100.0 2.4 26.8 24.7 46.2 5.7

 500 to 999 ......................................... 8.7 2,019 762 713 100.0 2.4 45.5 27.5 24.6 6.8

 Fewer than 500 ................................. 3.2 2,049 336 490 100.0 7.5 68.1 16.6 7.8 9.4

Year of Construction

 1939 or Before .................................. 2.6 2,131 1,197 1,165 100.0 Q 40.1 17.3 39.9 11.6

 1940 to 1949 ..................................... 1.5 1,771 1,287 1,195 100.0 Q 40.6 25.7 33.7 14.5

 1950 to 1959 ..................................... 4.8 1,826 1,571 1,469 100.0 Q 36.8 19.8 39.7 8.4

 1960 to 1969 ..................................... 6.9 1,807 1,566 1,482 100.0 Q 32.5 20.0 45.6 7.9

 1970 to 1979 ..................................... 9.1 1,629 1,789 1,701 100.0 3.1 29.3 22.3 45.3 6.8

 1980 to 1984 ..................................... 5.8 1,537 1,945 1,839 100.0 Q 27.3 18.4 51.8 7.7

 1985 to 1987 ..................................... 4.2 1,723 1,866 1,738 100.0 Q 24.0 27.8 47.9 10.1

 1988 to 1990 ..................................... 3.5 1,842 1,614 1,522 100.0 2.8 30.2 20.5 46.6 8.7

 1991 to 19934 ................................... 3.7 1,921 1,692 1,604 100.0 2.3 23.6 21.4 52.7 10.2

Number of Rooms AirConditioned in Summer 1993

 None ................................................. 0.9 -- 1,252 1,208 100.0 100.0 -- -- -- 19.2

 One or Two ....................................... 0.8 586 2,106 1,969 100.0 Q 44.2 Q 41.6 16.4

 Three ................................................. 3.3 747 1,864 1,737 100.0 Q 43.5 22.0 34.5 8.7

 Four .................................................. 6.2 1,063 1,823 1,708 100.0 Q 36.5 25.2 38.0 7.4

 Five or More ...................................... 30.7 2,078 1,634 1,549 100.0 Q 28.5 21.2 50.2 3.7

Central Air-Conditioner Age

(excludes systems for more than

one housing unit)

 Less than 2 Years ............................. 5.5 1,859 1,691 1,602 100.0 3.1 25.5 22.0 49.4 7.5

 2 to 4 Years ....................................... 6.4 1,929 1,608 1,514 100.0 Q 28.6 19.7 50.8 6.8

 5 to 9 Years ....................................... 10.6 1,904 1,694 1,595 100.0 1.5 27.2 23.6 47.6 6.4

 10 to 19 Years ................................... 10.2 1,822 1,677 1,595 100.0 1.9 30.6 21.7 45.8 6.1

 20 Years or More .............................. 3.6 1,720 1,446 1,382 100.0 9.8 38.3 15.8 36.1 11.0

 Don’t Know ........................................ 4.8 1,101 1,943 1,830 100.0 Q 38.1 20.0 40.5 8.1

See footnotes at end of table.

84 Energy Information Administration/Housing Characteristrics 1993
Table 3.14. Central Air-Conditioning in U.S. Households, 1993 (Continued)

Housing Unit and Household

Characteristics

RSE Column Factor:

Total

Households

(millions)

Cooled

Floorspace

(square feet

per

household)

Number of

Cooling

Degree-Days

per

Household

Air-Conditioner Use in Summer 19931

(percent of households)

RSE

Row

Factors

1993 Normal Total

Not at

All

Only a

Few

Times

Quite a

Bit

All

Summer

1.0 0.5 0.6 0.6 4.1 1.1 1.5 1.0

Type and Ownership of Housing

Unit

 Single-Family Detached .................... 27.3 2,103 1,604 1,526 100.0 2.3 28.3 20.4 48.9 4.2

 Owned ............................................. 25.0 2,144 1,583 1,504 100.0 2.3 28.5 20.7 48.6 4.3

 Rented ............................................. 2.3 1,654 1,829 1,770 100.0 Q 26.9 17.2 52.9 12.1

 Single-Family Attached ..................... 3.8 1,611 1,704 1,573 100.0 Q 27.2 24.4 46.6 10.8

 Owned ............................................. 2.6 1,784 1,713 1,582 100.0 Q 28.2 24.0 45.6 11.9

 Rented ............................................. 1.2 1,242 1,685 1,553 100.0 Q 25.1 25.3 48.8 16.9

 Multifamily (2 to 4 units) .................... 1.4 1,050 1,871 1,774 100.0 Q 24.8 25.9 45.3 14.2

 Owned ............................................. 0.3 1,554 2,002 1,878 100.0 Q Q Q 58.1 33.0

 Rented ............................................. 1.1 906 1,834 1,744 100.0 Q 27.0 26.6 41.6 15.8

 Multifamily (5 or more units) .............. 7.2 898 1,903 1,760 100.0 1.9 43.0 21.5 33.6 9.1

 Owned ............................................. 0.8 1,223 2,068 1,941 100.0 Q 41.8 Q 43.1 31.6

 Rented ............................................. 6.3 854 1,881 1,735 100.0 2.2 43.2 22.4 32.3 8.7

 Mobile Home ..................................... 2.4 1,016 1,725 1,679 100.0 Q 26.0 21.9 47.3 12.5

 Owned ............................................. 2.1 1,050 1,717 1,673 100.0 Q 25.8 22.7 47.9 12.7

 Rented ............................................. 0.3 730 1,785 1,731 100.0 Q Q Q Q 28.0

1993 Family Income Category

 Less than $5,000 ............................... 1.1 967 1,949 1,806 100.0 Q 35.6 21.1 39.2 15.1

 $5,000 to $9,999 ............................... 2.8 1,075 1,836 1,735 100.0 Q 40.0 17.8 39.8 11.6

 $10,000 to $14,999 ........................... 3.3 1,221 1,748 1,643 100.0 6.1 38.8 17.7 37.4 9.6

 $15,000 to $19,999 ........................... 3.4 1,418 1,759 1,675 100.0 Q 33.9 21.1 42.8 8.6

 $20,000 to $24,999 ........................... 3.5 1,447 1,664 1,598 100.0 Q 37.3 17.7 42.7 8.7

 $25,000 to $34,999 ........................... 7.0 1,647 1,684 1,593 100.0 3.2 30.8 19.8 46.2 6.5

 $35,000 to $49,999 ........................... 8.6 1,845 1,710 1,634 100.0 2.2 26.5 21.8 49.6 5.8

 $50,000 to $74,999 ........................... 7.2 2,099 1,600 1,506 100.0 Q 24.9 23.4 50.6 6.3

 $75,000 or More ................................ 5.3 2,576 1,508 1,388 100.0 Q 26.5 25.7 46.8 8.5

Below Poverty Line

 100 Percent ....................................... 3.3 1,047 1,898 1,794 100.0 5.1 39.4 20.7 34.8 9.1

 125 Percent ....................................... 4.8 1,113 1,787 1,686 100.0 4.4 42.1 19.6 33.8 8.0

Eligible for Federal Assistance5 ...... 8.5 1,211 1,793 1,684 100.0 4.3 39.2 18.0 38.4 7.1

Pays for Electricity for Central

Air-Conditioning

 Yes .................................................... 40.6 1,785 1,679 1,587 100.0 2.4 30.0 21.2 46.4 3.5

 No ...................................................... 1.3 947 1,780 1,652 100.0 Q 43.3 24.6 32.1 19.6

1 "Air-Conditioner Use" refers to the central air-conditioner or (if the household has only room air-conditioners) to the most-used room air-conditioner. 2 An estimated 1.7 million households have both a central air-conditioner and one or more room air-conditioners. 3 Gas includes LPG and natural gas. 4 Does not include all new construction for 1993. 5 Below 150 percent of poverty line or 60 percent of median State income.

-- = 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 85
Table 3.15. Room Air-Conditioning in U.S. Households, 1993

Housing Unit and Household

Characteristics

RSE Column Factor:

Total

Households

(millions)

Cooled

Floorspace

(square feet

per

household)

Number of

Cooling

Degree-Days

per

Household

Air-Conditioner Use in Summer 19931

(percent of households)

RSE

Row

Factors

1993 Normal Total

Not at

All

Only a

Few

Times

Quite a

Bit

All

Summer

0.9 0.7 0.6 0.6 2.6 0.8 1.4 1.5

Total .................................................... 25.7 877 1,326 1,219 100.0 5.9 52.1 23.5 18.5 4.5

Number of .

Room Air-Conditioners

 1 Unit ................................................. 17.3 741 1,282 1,187 100.0 7.8 54.6 20.9 16.7 4.7

 2 Units ............................................... 6.3 1,053 1,385 1,261 100.0 Q 48.5 28.3 21.4 9.0

 3 or More Units .................................. 2.2 1,469 1,509 1,355 100.0 Q 42.2 31.2 24.5 11.4

Census Region and Division

 Northeast ........................................... 7.6 803 953 748 100.0 3.5 60.1 27.2 9.1 6.5

 New England ................................... 1.7 705 763 550 100.0 6.9 62.3 20.3 10.5 8.4

 Middle Atlantic ................................. 5.9 830 1,006 803 100.0 Q 59.5 29.1 8.8 6.9

 Midwest ............................................. 6.6 963 777 786 100.0 7.8 59.3 22.0 10.9 7.0

 East North Central ........................... 4.5 996 773 733 100.0 6.7 60.4 21.3 11.6 9.1

 West North Central .......................... 2.1 891 783 898 100.0 10.3 57.0 23.5 9.2 10.6

 South ................................................. 9.0 926 2,123 1,971 100.0 3.7 34.8 25.2 36.3 6.9

 South Atlantic .................................. 4.2 834 2,131 1,880 100.0 Q 35.2 23.2 37.9 10.4

 East South Central .......................... 2.1 1,025 1,747 1,639 100.0 Q 35.7 27.5 34.8 8.4

 West South Central ......................... 2.7 994 2,399 2,371 100.0 Q 33.3 26.8 35.0 12.5

 West .................................................. 2.6 711 1,070 1,104 100.0 15.2 70.2 10.9 Q 14.0

 Mountain ......................................... 0.6 719 1,192 1,282 100.0 Q 62.3 Q Q 27.8

 Pacific .............................................. 2.0 709 1,034 1,052 100.0 14.2 72.5 10.0 Q 17.1

Urban Status

 Urban ................................................ 19.0 841 1,345 1,207 100.0 6.7 52.9 24.0 16.3 5.5

 Central City ..................................... 8.3 707 1,440 1,294 100.0 7.0 46.8 28.7 17.4 7.1

 Suburban ......................................... 10.7 945 1,272 1,141 100.0 6.5 57.6 20.4 15.5 7.0

 Rural .................................................. 6.8 980 1,272 1,251 100.0 3.4 49.9 22.1 24.6 7.8

Cooling Degree-Days (CDD)--1993

 2,000 or More .................................... 4.2 861 2,861 2,704 100.0 5.8 36.1 24.5 33.6 9.7

 1,000 to 1,999 ................................... 9.5 924 1,459 1,304 100.0 4.5 41.2 30.5 23.8 6.8

 500 to 999 ......................................... 9.7 842 780 681 100.0 6.1 63.2 20.2 10.4 6.5

 Fewer than 500 ................................. 2.4 865 330 468 100.0 10.2 78.0 7.9 3.9 11.2

Year of Construction

 1939 or Before .................................. 7.9 903 1,116 1,032 100.0 4.8 58.3 24.6 12.3 7.3

 1940 to 1949 ..................................... 2.5 887 1,460 1,326 100.0 Q 43.5 26.0 26.4 11.1

 1950 to 1959 ..................................... 4.5 964 1,551 1,410 100.0 6.4 46.1 26.7 20.9 10.0

 1960 to 1969 ..................................... 4.5 831 1,401 1,251 100.0 7.0 51.9 21.7 19.5 10.3

 1970 to 1979 ..................................... 4.0 813 1,277 1,221 100.0 7.0 51.1 20.5 21.5 9.4

 1980 to 1984 ..................................... 1.1 864 1,353 1,255 100.0 Q 55.9 19.8 21.8 15.6

 1985 to 1987 ..................................... 0.6 907 1,640 1,534 100.0 Q 54.4 27.3 14.7 20.9

 1988 to 1990 ..................................... 0.4 731 1,071 953 100.0 Q 59.8 Q Q 19.7

 1991 to 19932 ................................... 0.3 559 1,496 1,474 100.0 Q 39.5 Q Q 31.8

Number of Rooms AirConditioned in Summer 1993

 None ................................................. 1.0 -- 1,192 1,135 100.0 86.0 -- -- -- 10.7

 One or Two ....................................... 10.5 420 1,230 1,104 100.0 3.1 61.0 21.9 14.0 4.8

 Three ................................................. 4.3 789 1,269 1,156 100.0 Q 50.3 27.9 19.7 7.3

 Four ................................................... 3.6 1,070 1,337 1,254 100.0 Q 50.2 25.7 22.8 8.7

 Five or More ...................................... 6.3 1,727 1,541 1,446 100.0 3.5 45.5 25.5 25.5 8.3

Age of Most-Used Room AirConditioner

 Less than 2 Years ............................. 3.0 820 1,585 1,456 100.0 5.1 49.8 18.9 26.1 10.0

 2 to 4 Years ....................................... 4.8 880 1,356 1,224 100.0 4.1 46.4 27.8 21.7 8.5

 5 to 9 Years ....................................... 7.6 944 1,342 1,229 100.0 3.4 51.1 26.0 19.6 7.2

 10 to 19 Years ................................... 5.4 893 1,193 1,103 100.0 6.1 55.4 21.5 17.0 7.7

 20 Years or More .............................. 2.1 1,006 1,166 1,103 100.0 13.1 57.8 22.1 7.0 14.3

 Don’t Know ........................................ 2.9 641 1,327 1,236 100.0 10.3 56.3 19.9 13.5 9.5

See footnotes at end of table.

86 Energy Information Administration/Housing Characteristrics 1993
Table 3.15. Room Air-Conditioning in U.S. Households, 1993 (Continued)

Housing Unit and Household

Characteristics

RSE Column Factor:

Total

Households

(millions)

Cooled

Floorspace

(square feet

per

household)

Number of

Cooling

Degree-Days

per

Household

Air-Conditioner Use in Summer 19931

(percent of households)

RSE

Row

Factors

1993 Normal Total

Not at

All

Only a

Few

Times

Quite a

Bit

All

Summer

0.9 0.7 0.6 0.6 2.6 0.8 1.4 1.5

Type and Ownership of Housing

Unit

 Single-Family Detached .................... 15.3 1,068 1,376 1,287 100.0 5.4 53.4 21.7 19.5 5.4

 Owned ............................................. 12.9 1,131 1,322 1,236 100.0 5.4 54.4 21.7 18.5 5.7

 Rented ............................................. 2.4 726 1,667 1,565 100.0 5.3 47.9 21.7 25.1 11.6

 Single-Family Attached ..................... 1.6 592 1,364 1,134 100.0 Q 54.3 24.5 10.9 14.3

 Owned ............................................. 1.1 616 1,271 1,052 100.0 Q 60.0 24.8 Q 15.0

 Rented ............................................. 0.5 547 1,547 1,294 100.0 Q 43.3 23.9 24.9 20.0

 Multifamily (2 to 4 units) .................... 2.7 677 1,305 1,147 100.0 Q 52.5 27.2 15.9 11.5

 Owned ............................................. 0.6 941 1,101 960 100.0 Q 62.0 19.3 Q 19.1

 Rented ............................................. 2.1 595 1,368 1,205 100.0 Q 49.6 29.7 17.9 11.9

 Multifamily (5 or more units) .............. 4.5 551 1,133 1,031 100.0 6.5 50.0 27.5 16.1 10.9

 Owned ............................................. 0.5 896 863 849 100.0 Q 63.8 Q Q 34.8

 Rented ............................................. 4.0 503 1,170 1,056 100.0 6.2 48.1 28.1 17.7 11.0

 Mobile Home ..................................... 1.6 601 1,394 1,302 100.0 Q 43.3 23.2 27.1 11.0

 Owned ............................................. 1.2 622 1,347 1,280 100.0 Q 43.4 25.2 25.7 13.8

 Rented ............................................. 0.4 546 1,517 1,360 100.0 Q 43.0 Q Q 17.3

1993 Family Income Category

 Less than $5,000 ............................... 1.4 561 1,581 1,436 100.0 Q 31.9 22.2 40.6 11.2

 $5,000 to $9,999 ............................... 3.7 630 1,432 1,343 100.0 7.2 48.9 23.0 20.9 8.4

 $10,000 to $14,999 ........................... 3.5 721 1,443 1,343 100.0 6.6 51.9 19.4 22.2 8.8

 $15,000 to $19,999 ........................... 2.8 885 1,453 1,336 100.0 Q 52.4 23.5 21.0 12.6

 $20,000 to $24,999 ........................... 2.2 783 1,320 1,231 100.0 Q 45.7 28.7 21.2 10.0

 $25,000 to $34,999 ........................... 3.5 1,016 1,273 1,182 100.0 6.0 59.8 20.0 14.3 9.4

 $35,000 to $49,999 ........................... 4.5 1,014 1,189 1,073 100.0 4.8 56.2 26.3 12.6 9.4

 $50,000 to $74,999 ........................... 2.4 1,096 1,147 1,036 100.0 8.5 55.8 20.0 15.7 10.3

 $75,000 or More ................................ 1.5 1,174 1,160 1,014 100.0 Q 52.1 33.7 Q 12.1

Below Poverty Line

 100 Percent ....................................... 5.0 621 1,582 1,472 100.0 5.7 45.2 20.3 28.8 7.3

 125 Percent ....................................... 7.0 652 1,541 1,441 100.0 6.3 45.2 22.0 26.4 6.2

Eligible for Federal Assistance3 ...... 10.3 701 1,458 1,351 100.0 5.3 48.8 21.9 24.0 5.5

Pays for Electricity for

Air-Conditioning

 Yes .................................................... 24.2 904 1,318 1,216 100.0 6.0 53.0 23.1 18.0 4.7

 No ...................................................... 1.5 468 1,454 1,264 100.0 Q 38.1 30.9 26.7 15.8

1 "Air-Conditioner Use" refers to the central air-conditioner or (if the household has only room air-conditioners) to the most-used room air-conditioner. 2 Does not include all new construction for 1993. 3 Below 150 percent of poverty line or 60 percent of median State income.

-- = 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 87