Buildings Energy Data Book

2.2 : Residential Sector Characteristics

2.2.8	Presence of Air-Conditioning and Type of Heating System in New Single-Family Homes

				Type of Primary Heating System
		Total Homes	Warm-Air			Hot Water	Other or	\|
		(thousands)	Furnace		Heat Pump	or Steam (1)	None (2)	\|	Air-Conditioning
1980		957	57%		24%	4%	15%	\|		62%
1981		819	56%		25%	3%	16%	\|		65%
1982		632	53%		26%	4%	17%	\|		66%
1983		924	56%		29%	4%	12%	\|		69%
1984		1,025	55%		30%	4%	11%	\|		71%
1985		1,072	54%		30%	5%	11%	\|		70%
1986		1,120	54%		29%	7%	10%	\|		69%
1987		1,123	57%		27%	7%	9%	\|		71%
1988		1,085	60%		26%	7%	8%	\|		75%
1989		1,026	63%		24%	6%	7%	\|		77%
1990		966	64%		23%	6%	6%	\|		76%
1991		838	65%		22%	6%	7%	\|		75%
1992		964	66%		24%	6%	5%	\|		77%
1993		1,039	67%		24%	5%	5%	\|		78%
1994		1,160	67%		24%	5%	4%	\|		79%
1995		1,066	66%		25%	5%	4%	\|		79%
1996		1,129	70%		23%	5%	2%	\|		81%
1997		1,116	70%		23%	5%	2%	\|		82%
1998		1,160	72%		21%	4%	3%	\|		83%
1999		1,270	72%		22%	4%	2%	\|		84%
2000		1,242	71%		23%	4%	2%	\|		85%
2001		1,256	71%		23%	4%	1%	\|		86%
2002		1,325	71%		23%	4%	2%	\|		87%
2003		1,386	71%		24%	3%	2%	\|		88%
2004		1,532	70%		26%	3%	1%	\|		90%
2005		1,636	67%		29%	3%	1%	\|		89%
2006		1,654	63%		33%	3%	2%	\|		89%
2007		1,218	62%		34%	2%	2%	\|		90%
2008		819	60%		34%	3%	3%	\|		89%
2009		520	56%		37%	3%	4%	\|		88%
2010		496	56%		38%	2%	3%	\|		88%

Note(s)	1) Includes both air source and geothermal (ground source) versions. 2) Includes electric baseboard, panel, radiant heat, space heater, floor or wall furnace, solar, and other types.