*The data for those years (2009, 2015, and 2020) has been directly obtained from the EIA, while the data for every other year was calculated by RMI based on the number of annual shipments.
Citation formats
Number of heat pumps for residential space heating in stock in the U.S. 2009-2024
The number of heat pumps in stock for residential space heating in the United States increased steadily between 2009 and 2024. In 2009, there were nearly residential heat pumps in stock. By 2024, this figure had more than doubled, reaching ** units.
Profit from the additional features of your individual account
Currently, you are using a shared account. To use individual functions (e.g., mark statistics as favourites, set
statistic alerts) please log in with your personal account.
If you are an admin, please authenticate by logging in again.
Learn more about how ÌÇÐÄÆƽâ°æ can support your business.
Rocky Mountain Institute. (March 31, 2025). Number of heat pumps for residential space heating in stock in the United States from 2009 to 2024 (in millions) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 21, 2026, from /statistics/1609768/inventory-heat-pumps-residential-us/
Rocky Mountain Institute. "Number of heat pumps for residential space heating in stock in the United States from 2009 to 2024 (in millions)." Chart. March 31, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 21, 2026. /statistics/1609768/inventory-heat-pumps-residential-us/
Rocky Mountain Institute. (2025). Number of heat pumps for residential space heating in stock in the United States from 2009 to 2024 (in millions). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 21, 2026. /statistics/1609768/inventory-heat-pumps-residential-us/
Rocky Mountain Institute. "Number of Heat Pumps for Residential Space Heating in Stock in The United States from 2009 to 2024 (in Millions)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 31 Mar 2025, /statistics/1609768/inventory-heat-pumps-residential-us/
Rocky Mountain Institute, Number of heat pumps for residential space heating in stock in the United States from 2009 to 2024 (in millions) ÌÇÐÄÆƽâ°æ, /statistics/1609768/inventory-heat-pumps-residential-us/ (last visited July 21, 2026)
Number of heat pumps for residential space heating in stock in the United States from 2009 to 2024 (in millions) [Graph], Rocky Mountain Institute, March 31, 2025. [Online]. Available: /statistics/1609768/inventory-heat-pumps-residential-us/
