8.1 - THERMOSTATS
  Number of households by occupation mode
Owner Renter
Households with a thermostat
Yes 9,957,686 A 2,923,472 A
No U 312,106 M
Don't know U U
Not stated U U
Households with a mechanical built-in unit thermostat
One 355,784 A 183,014 M
Two or more 515,631 M 227,379 M
None 2,293,458 A 834,041 A
Don't know 328,751 M 377,761 A
Not stated 6,554,862 A 1,555,946 A
Households with a mechanical wall unit thermostat
One 1,958,329 A 689,106 A
Two or more 1,300,795 A 870,348 A
None 1,519,956 A 367,259 A
Don't know 301,172 M 285,259 A
Not stated 4,968,235 A 966,168 A
Households with an electronic, non-programmable thermostat
One 665,128 A 82,118 M
Two or more 721,218 A 306,325 M
None 2,211,355 A 831,342 A
Don't know 250,891 M 281,846 M
Not stated 6,199,895 A 1,676,510 A
Households with an electronic, programmable thermostat
One 4,232,898 A 338,027 M
Two or more 1,322,474 A 306,235 M
None 1,095,089 A 815,429 A
Don't know 273,278 M 261,031 M
Not stated 3,124,748 A 1,457,419 A
Households with a main programmable thermostat
Yes 4,921,476 A 483,113 M
No 345,744 A 150,311 M
Don't know U U
Not stated 238,702 M U
Households with a main electronic, programmable thermostat that was programmed
Yes 4,343,474 A 399,980 M
No 567,919 A U
Don't know U U
Not stated U

Note:

Due to rounding, the numbers may not add up and may differ slightly among tables.

Legend:

The letter beside each estimate classifies its quality as follows: A–Acceptable, M–Use with caution, U–Too unreliable to be published.

Source:

2011 Survey of Household Energy Use