Table HC9.9 Home Appliances Characteristics by Climate Zone, 2005

 Million U.S. Housing Units

Total U.S............................................................ 111.1 10.9 26.1 27.3 24.0 22.8

Cooking Appliances

Conventional Ovens

Use an Oven............................................... 109.6 10.9 25.7 27.1 23.4 22.4

1.............................................................. 103.3 10.2 24.3 25.3 22.2 21.3

2 or More................................................. 6.2 0.6 1.5 1.8 1.2 1.1

Do Not Use an Oven................................... 1.5 Q 0.3 Q 0.6 0.4

Most-Used Oven Fuel

Electric..................................................... 67.9 7.2 14.1 16.7 13.2 16.7

Natural Gas.............................................. 36.4 2.5 10.6 9.6 9.0 4.8

Propane/LPG........................................... 5.2 1.2 1.0 0.8 1.2 1.0

Self-Cleaning Oven

Use a Self-Cleaning Oven........................ 62.9 7.5 15.6 15.1 11.7 13.0

Continuous........................................... 9.3 1.0 2.7 2.1 2.0 1.6

Manual Start......................................... 53.6 6.5 12.9 13.0 9.7 11.5

Do Not Use a Self-Cleaning Oven............ 46.7 3.4 10.2 12.0 11.7 9.4

Cooking Ranges

Use a Cooking Range.................................. 109.8 10.9 25.9 27.2 23.4 22.5

1.............................................................. 105.5 10.5 24.7 25.8 22.7 21.9

2 or More................................................. 4.3 0.4 1.2 1.4 0.7 0.6

Do Not Use a Cooking Range...................... 1.2 Q 0.2 Q 0.6 0.3

Most-Used Cooking Range Fuel

Electric..................................................... 65.2 7.0 13.7 16.2 12.3 16.0

Natural Gas.............................................. 39.0 2.7 11.0 10.1 9.7 5.5

Propane/LPG........................................... 5.6 1.2 1.1 0.9 1.3 1.0

Built-in/Stove-top Grills

Use a Built-in/Stove-top Grill........................ 4.9 0.4 0.8 2.0 1.1 0.6

Do Not Use a Built-in/Stove-top Grill............ 106.2 10.6 25.2 25.3 22.9 22.2

Built-in/Stove-top Grill Fuel

Electric..................................................... 2.5 0.3 0.4 0.7 0.7 0.5

Natural Gas.............................................. 2.2 Q Q 1.3 0.4 Q

Propane/LPG........................................... Q Q Q Q Q Q

Refrigerators

Use a Refrigerator........................................... 111.0 10.9 26.1 27.3 23.9 22.8

1.................................................................. 86.3 7.7 20.1 20.8 19.2 18.6

2 or More..................................................... 24.6 3.3 5.9 6.5 4.8 4.2

Do Not Use a Refrigerator............................... Q N Q Q Q Q

Most-Used Refrigerator

Defrost Method

Frost-Free................................................ 102.8 10.1 23.7 24.9 22.6 21.4

Manual..................................................... 8.0 0.9 2.2 2.3 1.3 1.3

Type of Most-Used Refrigerator

2-Doors (top and bottom)......................... 64.6 7.0 16.4 16.7 12.9 11.6

2-Doors (side-by-side).............................. 33.0 2.8 6.2 7.5 8.2 8.4

Full-Size (single door).............................. 12.1 1.1 3.0 2.8 2.5 2.6

Half-Size/Other........................................ 1.0 Q 0.3 Q 0.4 Q

Home Appliances Characteristics

Climate Zone1

2,000 CDD 

or More

and Less 

than 4,000 

HDD

Less than 2,000 CDD and --

Greater than 

7,000 HDD

5,500 to 

7,000 HDD

4,000 to 

5,499 HDD

Less than 

4,000 HDD

Housing 

Units 

(millions)

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC9.9 Home Appliances Characteristics by Climate Zone, 2005

 Million U.S. Housing Units

Home Appliances Characteristics

Climate Zone1

2,000 CDD 

or More

and Less 

than 4,000 

HDD

Less than 2,000 CDD and --

Greater than 

7,000 HDD

5,500 to 

7,000 HDD

4,000 to 

5,499 HDD

Less than 

4,000 HDD

Housing 

Units 

(millions)

Age of Most-Used Refrigerator

Less than 2 Years.................................... 19.0 1.4 4.3 4.5 5.0 3.8

2 to 4 Years............................................. 22.7 2.2 4.8 5.4 4.8 5.6

5 to 9 Years............................................. 30.9 3.3 6.8 7.3 7.2 6.2

10 to 19 Years......................................... 25.7 2.7 6.5 6.8 5.1 4.6

20 Years or More..................................... 6.1 0.8 1.7 1.6 0.9 1.2

Don't Know.............................................. 6.7 0.5 2.0 1.8 1.0 1.4

Size of Most-Used Refrigerator

Very Small (Less than 11 cf).................... 0.7 Q Q Q Q Q

Small (11-14 cf)....................................... 5.4 0.5 1.4 1.7 0.8 0.9

Medium (15-18 cf).................................... 53.8 5.0 13.8 13.6 10.3 11.0

Large (19-22 cf)....................................... 42.7 4.5 9.0 9.8 10.6 8.7

Very Large (More than 22 cf)................... 8.5 0.8 1.7 2.0 2.0 2.0

Through-the-Door Ice and Water Service

Yes.......................................................... 29.8 2.5 5.1 6.7 7.9 7.6

No............................................................ 81.1 8.5 20.9 20.5 16.0 15.1

Second Refrigerator

Use a Second Refrigerator.......................... 24.6 3.3 5.9 6.5 4.8 4.2

Do Not Use a Second Refrigerator.............. 86.3 7.7 20.1 20.8 19.2 18.6

Type of Second Refrigerator

2-Doors (top and bottom)......................... 7.5 1.0 2.2 2.2 1.1 0.9

2-Doors (side-by-side).............................. 8.6 1.1 1.5 2.2 2.0 1.7

Full-Size (single door).............................. 2.8 0.3 0.7 0.6 0.6 0.5

Half-Size/Other........................................ 5.1 0.7 1.3 1.2 1.0 0.9

Age of Second Refrigerator

Less than 2 Years.................................... 2.3 0.3 0.4 0.6 0.5 0.4

2 to 4 Years............................................. 3.8 0.4 0.8 1.1 0.8 0.8

5 to 9 Years............................................. 5.3 0.7 1.1 1.4 1.2 0.9

10 to 19 Years......................................... 8.6 1.1 2.2 2.3 1.7 1.3

20 Years or More..................................... 4.1 0.8 1.3 0.8 0.6 0.6

Don't Know.............................................. 0.5 Q Q Q Q Q

Size of Second Refrigerator

Very Small (Less than 11 cf).................... 3.4 0.4 0.8 1.0 0.6 0.5

Small (11-14 cf)....................................... 3.6 0.5 1.1 0.8 0.5 0.6

Medium (15-18 cf).................................... 10.5 1.6 2.4 2.6 1.9 1.9

Large (19-22 cf)....................................... 6.2 0.7 1.5 1.8 1.5 0.7

Very Large (More than 22 cf)................... 1.0 Q Q Q Q 0.4

Separate Freezers

Do Not Use a Separate Freezer...................... 76.0 5.7 17.7 19.1 17.3 16.1

Use a Separate Freezer.................................. 35.1 5.2 8.3 8.2 6.7 6.7

1.................................................................. 32.2 4.6 7.7 7.5 6.3 6.1

2 or More..................................................... 2.9 0.6 0.6 0.7 0.4 0.6

Most-Used Freezer Defrost Method

Frost-Free.................................................... 14.3 1.8 3.0 3.1 3.2 3.1

Manual........................................................ 20.8 3.4 5.3 5.1 3.5 3.6

Type of Most-Used Freezer

Upright......................................................... 17.0 2.5 4.3 4.2 3.3 2.7

Chest........................................................... 18.1 2.7 4.1 4.0 3.3 4.0

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC9.9 Home Appliances Characteristics by Climate Zone, 2005

 Million U.S. Housing Units

Home Appliances Characteristics

Climate Zone1

2,000 CDD 

or More

and Less 

than 4,000 

HDD

Less than 2,000 CDD and --

Greater than 

7,000 HDD

5,500 to 

7,000 HDD

4,000 to 

5,499 HDD

Less than 

4,000 HDD

Housing 

Units 

(millions)

Age of Most-Used Freezer

Less than 2 Years....................................... 3.5 0.5 0.8 0.8 0.8 0.7

2 to 4 Years................................................. 6.0 0.7 1.2 1.3 1.3 1.5

5 to 9 Years................................................. 7.8 1.0 2.0 1.6 1.4 1.9

10 to 19 Years............................................. 9.3 1.3 2.2 2.2 2.1 1.4

20 Years or More......................................... 7.6 1.5 1.9 2.1 1.0 1.1

Don't Know.................................................. 0.7 Q Q 0.3 Q Q

Size of Most-Used Freezer

Very Small (Less than 11 cf)........................ 3.1 0.5 0.9 0.8 0.3 0.5

Small (11-14 cf)........................................... 8.9 1.1 2.0 2.1 1.8 1.9

Medium (15-18 cf)....................................... 12.7 1.8 3.1 2.8 2.5 2.6

Large (19-22 cf)........................................... 8.0 1.2 1.9 1.8 1.5 1.5

Very Large (More than 22 cf)....................... 2.5 0.6 0.4 0.7 0.5 0.3

Other Kitchen Appliances

Dishwasher

Yes.............................................................. 64.7 6.7 14.8 15.2 14.1 13.8

No............................................................... 46.4 4.2 11.2 12.1 9.9 9.0

Age of Dishwasher

Less than 2 Years.................................... 11.5 1.3 2.7 2.6 2.5 2.3

2 to 4 Years............................................. 14.6 1.6 3.3 2.8 2.8 4.1

5 to 9 Years............................................. 19.2 2.1 4.1 5.0 4.6 3.3

10 to 19 Years......................................... 12.8 1.3 2.9 3.3 2.9 2.5

20 Years or More..................................... 3.3 0.3 0.9 0.7 0.6 0.8

Don't Know.............................................. 3.3 Q 0.9 0.9 0.7 0.7

Electric Coffee Maker

Yes.............................................................. 67.2 7.2 16.0 16.5 13.3 14.1

No............................................................... 43.9 3.7 10.1 10.8 10.6 8.7

Electric Toaster Oven

Yes.............................................................. 37.3 2.3 8.7 9.6 8.8 7.9

No............................................................... 73.8 8.6 17.4 17.7 15.2 14.9

Microwave Oven

Yes.............................................................. 97.7 10.3 22.9 24.1 20.8 19.6

No............................................................... 13.4 0.7 3.2 3.2 3.1 3.2

Clothes Washers and Dryers

Clothes Washer

Do Not Use a Clothes Washer..................... 19.3 1.1 5.2 5.7 3.9 3.3

Use a Clothes Washer................................. 91.8 9.8 20.9 21.6 20.0 19.5

Top Loading............................................. 84.1 8.7 18.7 20.1 18.4 18.2

Front Loading........................................... 7.7 1.2 2.2 1.4 1.6 1.3

Age of Clothes Washer

Less than 2 Years................................ 15.7 1.6 3.5 3.6 3.7 3.3

2 to 4 Years.......................................... 21.1 2.0 4.2 4.7 5.1 5.1

5 to 9 Years.......................................... 28.9 3.0 6.3 6.6 6.0 6.9

10 to 19 Years...................................... 19.9 2.6 5.2 5.1 4.0 3.0

20 Years or More.................................. 4.1 0.5 1.0 1.1 0.7 0.7

Don't Know........................................... 2.2 Q 0.6 0.5 0.5 0.5

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC9.9 Home Appliances Characteristics by Climate Zone, 2005

 Million U.S. Housing Units

Home Appliances Characteristics

Climate Zone1

2,000 CDD 

or More

and Less 

than 4,000 

HDD

Less than 2,000 CDD and --

Greater than 

7,000 HDD

5,500 to 

7,000 HDD

4,000 to 

5,499 HDD

Less than 

4,000 HDD

Housing 

Units 

(millions)

Clothes Dryer

Do Not Use a Clothes Dryer........................ 23.6 1.3 5.7 7.3 4.6 4.6

Use a Clothes Dryer.................................... 87.5 9.6 20.3 20.0 19.3 18.2

Electric..................................................... 67.2 7.0 13.6 16.6 13.7 16.3

Natural Gas.............................................. 19.4 2.3 6.5 3.2 5.5 1.8

Propane/LPG........................................... 0.9 Q Q Q Q Q

Age of Clothes Dryer

Less than 2 Years.................................... 14.0 1.4 3.5 2.8 3.3 2.9

2 to 4 Years............................................. 18.7 2.1 3.7 3.9 4.4 4.6

5 to 9 Years............................................. 27.9 2.9 6.1 6.3 6.1 6.5

10 to 19 Years......................................... 19.5 2.3 4.9 5.0 4.1 3.2

20 Years or More..................................... 5.1 0.7 1.4 1.5 0.9 0.7

Don't Know.............................................. 2.3 0.2 0.7 0.6 0.5 0.4

Other Appliances

Use Ceiling Fans............................................. 77.2 7.3 17.1 17.6 16.7 18.5

1.................................................................. 21.7 2.8 5.5 5.3 4.9 3.2

2.................................................................. 17.4 1.9 3.9 4.5 3.8 3.3

3.................................................................. 12.3 1.3 2.7 2.9 2.2 3.2

4 or More..................................................... 25.8 1.4 5.0 4.8 5.7 8.9

Auto Block/Engine/Battery Heater................... 0.8 0.5 0.2 N N N

Electric Dehumidifier....................................... 13.3 3.0 5.6 3.4 0.7 0.5

Electric Humidifier........................................... 14.2 2.6 5.2 3.9 1.6 0.9

Evaporative/Swamp Cooler............................. 3.4 0.3 0.8 Q 1.1 0.5

Filter Systems in Swimming Pools.................. 8.3 0.5 1.5 1.5 2.2 2.7

Heated Aquarium............................................ 4.2 0.3 1.0 1.2 0.9 0.8

Outdoor Gas Light........................................... 1.3 Q 0.3 0.3 Q 0.4

Rechargeable Tools/Appliances...................... 54.9 6.3 12.3 13.4 11.9 11.0

Well Water Pumps.......................................... 14.1 3.5 3.4 2.5 2.1 2.6

 1. One of five climatically distinct areas, determined according to the 30-year average (1971-2000) of the annual heating and 

cooling degree-days. A household is assigned to a climate zone according to the 30-year average annual degree-days for an 

appropriate nearby weather station.

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

were sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables