Million U.S. Housing Units

Total............................................................................ 111.1 72.1 7.6 7.8 16.7 6.9

Personal Computers

Do Not Use a Personal Computer......................... 35.5 17.8 3.1 3.7 7.3 3.6

Use a Personal Computer...................................... 75.6 54.2 4.5 4.0 9.4 3.4

Most-Used Personal Computer

Type of PC

Desk-top Model................................................. 58.6 42.9 3.3 3.0 6.6 2.9

Laptop Model.................................................... 16.9 11.3 1.2 1.1 2.9 0.5

Hours Turned on Per Week

Less than 2 Hours............................................. 13.6 9.3 0.9 0.9 1.4 1.0

2 to 15 Hours.................................................... 29.1 20.6 1.8 1.4 4.0 1.3

16 to 40 Hours................................................... 13.5 10.0 0.8 0.8 1.5 0.4

41 to 167 Hours................................................. 6.3 4.8 Q Q 1.0 Q

On All the Time................................................. 13.0 9.5 0.8 0.7 1.5 0.5

Status of PC When Not Being Used

Left On.............................................................. 12.5 9.3 0.8 0.5 1.4 0.4

Completely Turned Off...................................... 43.6 30.6 2.5 2.4 5.9 2.3

Manually Put into Sleep Mode........................... 19.4 14.3 1.2 1.1 2.2 0.6

CPU Goes to Sleep When PC is Left On

Yes................................................................ 9.1 7.1 0.6 0.3 0.9 0.3

No.................................................................. 3.4 2.2 Q 0.3 0.5 Q

Type of Monitor Used

Desk-top

CRT (Standard Monitor)................................. 45.0 32.6 2.5 2.4 5.1 2.4

Flat-Panel LCD.............................................. 13.6 10.3 0.8 0.6 1.5 0.5

Laptop (Flat-panel LCD).................................... 16.9 11.3 1.2 1.1 2.9 0.5

Status of Monitor When Not in Use

Screen-Saver.................................................... 6.1 4.6 0.2 0.4 0.6 0.2

Automatic Sleep Mode...................................... 4.4 3.3 0.4 Q 0.4 Q

Monitor is Turned Off......................................... 2.0 1.4 Q Q 0.3 Q

Second Most-Used Personal Computer

Use a Second Personal Computer........................ 25.3 20.3 1.4 1.0 1.8 0.6

Type of PC

Desk-top Model................................................. 15.8 12.9 0.8 0.7 1.0 0.5

Lap-top Model................................................... 9.4 7.4 0.6 0.4 0.9 Q

Hours Turned on Per Week

Less than 2 Hours............................................. 8.2 6.4 0.5 0.3 0.5 0.4

2 to 15 Hours.................................................... 9.9 8.1 0.5 0.4 0.8 Q

16 to 40 Hours................................................... 3.2 2.6 Q Q 0.2 Q

41 to 167 Hours................................................. 1.2 1.0 Q Q Q N

On All the Time................................................. 2.8 2.2 Q Q Q Q

Attached 2 to 4 Units

Table HC2.12 Home Electronics Usage Indicators by Type of Housing Unit, 2005

5 or More 

Units

Mobile 

Homes

Type of Housing Unit

Housing 

Units 

(millions)

Single-Family Units Apartments in Buildings 

With--

Home Electronics Usage Indicators Detached

Energy Information Administration:

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
 Million U.S. Housing Units

Attached 2 to 4 Units

Table HC2.12 Home Electronics Usage Indicators by Type of Housing Unit, 2005

5 or More 

Units

Mobile 

Homes

Type of Housing Unit

Housing 

Units 

(millions)

Single-Family Units Apartments in Buildings 

With--

Home Electronics Usage Indicators Detached

Status of PC When Not in Use

Left On.............................................................. 3.2 2.6 Q Q 0.2 Q

Completely Turned Off...................................... 17.8 14.4 0.9 0.7 1.3 0.5

Manually Put into Sleep Mode........................... 4.2 3.4 0.3 0.2 0.3 Q

CPU Goes to Sleep When PC is Left On

Yes................................................................ 2.2 1.8 Q Q Q Q

No.................................................................. 1.0 0.7 Q Q Q Q

Type of Monitor Used

Desk-top

CRT (Standard Monitor)................................. 11.6 9.5 0.4 0.5 0.6 0.5

Flat-Panel LCD.............................................. 4.2 3.4 0.4 Q 0.3 Q

Laptop (Flat-panel LCD).................................... 9.4 7.4 0.6 0.4 0.9 Q

Monitor Goes to Sleep When Not in Use

Screen-Saver.................................................... 1.7 1.3 Q Q Q Q

Automatic Sleep Mode...................................... 1.0 0.9 Q Q Q Q

Monitor is Turned Off......................................... 0.5 0.4 Q Q Q N

Use of Internet

Have Access to Internet

Yes.................................................................... 66.9 48.8 4.2 3.3 8.0 2.6

Dial-up (phone).............................................. 26.8 19.9 1.4 1.1 2.6 1.8

DSL............................................................... 19.1 13.6 1.4 0.9 2.8 0.4

Cable Modem................................................ 20.8 15.2 1.4 1.3 2.5 0.4

No..................................................................... 8.7 5.4 0.3 0.8 1.4 0.7

Status of DSL Connection When Not in Use

Turned Off..................................................... 5.0 3.1 0.6 0.2 1.0 Q

Left On.......................................................... 14.2 10.5 0.8 0.7 1.9 0.3

Status of Cable Modem When Not in Use

Turned Off..................................................... 4.1 2.9 0.3 0.3 0.5 Q

Left On.......................................................... 16.7 12.2 1.1 1.0 2.0 0.4

Have a Wireless Router

Yes................................................................ 2.4 1.5 Q 0.2 0.4 Q

No.................................................................. 12.7 9.8 1.1 0.6 1.0 Q

No DSL or Modem Connection...................... 27.0 20.1 1.3 1.1 2.7 1.8

Primary Use of PC(s) 

Personal Use........................................................ 39.8 28.9 2.1 2.0 4.9 1.8

Recreation............................................................ 14.4 10.0 1.2 0.8 1.8 0.6

Education/School.................................................. 10.3 6.7 0.5 0.7 1.8 0.6

Home Business.................................................... 7.6 6.0 0.4 0.3 0.6 0.3

Telecommuting..................................................... 3.5 2.6 0.2 Q 0.3 Q

Telecommuting by Personal Computer

1 or 2 Days per Week........................................... 0.8 0.6 Q N Q Q

3 to 5 Days per Week........................................... 1.3 1.0 Q Q Q Q

More than 5 Days per Week................................. 1.4 1.0 Q Q Q Q

Energy Information Administration:

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
 Million U.S. Housing Units

Attached 2 to 4 Units

Table HC2.12 Home Electronics Usage Indicators by Type of Housing Unit, 2005

5 or More 

Units

Mobile 

Homes

Type of Housing Unit

Housing 

Units 

(millions)

Single-Family Units Apartments in Buildings 

With--

Home Electronics Usage Indicators Detached

PC Printer................................................................ 65.4 48.9 3.9 3.0 7.1 2.6

With Built-in Fax/Copier........................................ 27.7 21.3 1.7 1.0 2.7 0.9

Without Built-in Fax/Copier................................... 37.8 27.6 2.1 2.0 4.4 1.7

Use a Color Television Set........................................ 109.7 71.5 7.5 7.6 16.3 6.8

Weekday Hours Turned on per Day

Less than 1 Hour.................................................. 6.2 3.7 0.5 0.6 1.2 0.3

1 to 3 Hours.......................................................... 49.1 32.5 3.7 3.5 6.9 2.6

Most of the Day..................................................... 46.0 30.4 2.6 2.8 6.8 3.3

On All the Time..................................................... 8.4 5.0 0.7 0.7 1.4 0.7

No Television........................................................ 1.4 0.5 Q Q 0.5 Q

Weekend Hours Turned on per Day

Less than 1 Hour.................................................. 7.3 4.3 0.4 0.7 1.4 0.5

1 to 3 Hours.......................................................... 35.9 23.6 3.1 2.4 5.0 1.7

Most of the Day..................................................... 56.4 37.5 3.1 3.8 8.2 3.9

On All the Time..................................................... 10.1 6.2 0.8 0.7 1.7 0.7

No Television........................................................ 1.4 0.5 Q Q 0.5 Q

TV-Based Game System Usage per Week

Use a TV-Based Game System............................ 34.7 23.5 2.2 2.3 4.3 2.4

Less than 5 Hours............................................. 19.9 13.3 1.3 1.3 2.5 1.4

5 to 10 Hours.................................................... 8.9 6.2 0.5 0.6 1.0 0.6

11 to 15 hours................................................... 2.4 1.8 Q Q Q Q

16 to 20 Hours................................................... 1.5 0.7 Q Q 0.3 Q

More than 20 Hours........................................... 2.1 1.4 Q Q 0.2 Q

Do Not Use a TV-Based Game System................ 75.0 48.0 5.2 5.3 12.1 4.4

 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