Year,Air-source heat pumps,Gas furnaces,Central air conditioners,Oil furnaces,Heat pumps per gas furnace,Heat pump share of AC + HP (%),Heat pump share of HP + gas + oil furnaces (%),AHRI release used
2009,1642064,2174528,3515648,55619,0.755,31.8,42.4,doc_2010-12_0.pdf
2010,1747920,2453279,3419290,56445,0.712,33.8,41.1,doc_2011-12_0.pdf
2011,1765002,2216160,3744691,48247,0.796,32.0,43.8,doc_2012-12_0.pdf
2012,1697796,2243397,3915869,35980,0.757,30.2,42.7,doc_2013-12_0.pdf
2013,1968632,2601760,4201068,32144,0.757,31.9,42.8,doc_2014-12_0.pdf
2014,2353990,2734713,4499660,34725,0.861,34.3,45.9,doc_2015-12_0.pdf
2015,2269462,2814203,4545855,39494,0.806,33.3,44.3,doc_2016-12_0.pdf
2016,2429867,2942545,4900992,37743,0.826,33.1,44.9,doc_2017-12_0.pdf
2017,2619782,3133768,5185747,37268,0.836,33.6,45.2,doc_2018-12_0.pdf
2018,2940502,3416571,5399760,38429,0.861,35.3,46.0,doc_2019-12_0.pdf
2019,3109840,3441872,5359775,40692,0.904,36.7,47.2,doc_2021-12_0.pdf
2020,3418478,3351176,5910284,36505,1.02,36.6,50.2,doc_2022-12_0.pdf
2021,3916766,4008894,6282285,39548,0.977,38.4,49.2,doc_2023-12_0.pdf
2022,4334479,3872368,6053575,29470,1.119,41.7,52.6,doc_2023-12_0.pdf
2023,3616632,2989516,5040042,22619,1.21,41.8,54.6,doc_2025-12_0.pdf
2024,4122004,3120677,5559766,30036,1.321,42.6,56.7,doc_2025-12_0.pdf
2025,3644596,3247426,4104933,32799,1.122,47.0,52.6,doc_2025-12_0.pdf