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Check a heat pump’s certified ratings

Type the outdoor unit’s model number from its nameplate, or the AHRI reference number from your quote. You will see its ratings, how it compares with others of its size, and the rebate standards it meets.

Covers heat pumps sold new today (R-454B and R-32 refrigerant). See older R-410A models · Updated

Partial model numbers work. AHRI numbers find the pairing listed for each model.

Ducted, 3.5–4.5 tons: every model, highest efficiency on a 5°f day first

One size class at a time, so the numbers compare directly.

Showing Ducted, 3.5–4.5 tons (39,000–56,999 Btu/h cooling). What size is my system?

  1. 1926VSH4BE5M1SP42Kwith ducted air handler B65BMMX42K*CAIRTEMP3.5 tons · 40,500 Btu/h · DuctedBelow the middle1.75
  2. 1927VSH4BE5M1SP48Kwith ducted air handler B65EMMX48K*CAIRTEMP4 tons · 46,500 Btu/h · DuctedBelow the middle1.75
  3. 1928VSH4BF5M2SX48Kwith ducted air handler B65VMMX3648K-CAIRTEMP4 tons · 45,500 Btu/h · DuctedBelow the middle1.75
  4. 1929VSH4BF5M2SX60Kwith ducted air handler B65VMMX60K-CAIRTEMP4.5 tons · 53,500 Btu/h · DuctedBelow the middle1.75
  5. 1930VSH4ME5M1SP42Kwith ducted air handler C85DAMX43U*BAIRTEMP3.5 tons · 40,500 Btu/h · DuctedBelow the middle1.75
  6. 1931VSH4ME5M1SP48Kwith indoor coil C85DAMX4960U-B and furnace E7E*-0**HAIRTEMP4 tons · 46,000 Btu/h · DuctedBelow the middle1.75
  7. 1932AB-BSD48HI-230VOwith ducted air handler AB-BMP48AHU-230VIArmbridge4 tons · 48,000 Btu/h · DuctedBelow the middle1.75
  8. 1933PH5ZNB060000AA*BROCK4.5 tons · 54,500 Btu/h · DuctedBelow the middle1.75
  9. 193450NHB060---31*Carrier4.5 tons · 54,500 Btu/h · DuctedBelow the middle1.75
  10. 1935PH5ZNB060000AA*Carrier (sold as Bryant Heating and Cooling Systems)4.5 tons · 54,500 Btu/h · DuctedBelow the middle1.75
  11. 1936PH5ZNB060000AB*Carrier (sold as Weathermaker)4.5 tons · 54,500 Btu/h · DuctedBelow the middle1.75
  12. 1937PHM460000K000B*Carrier (sold as Airquest)4.5 tons · 54,500 Btu/h · DuctedBelow the middle1.75
  13. 1938WJH560000K000B*Carrier (sold as Grandaire)4.5 tons · 54,500 Btu/h · DuctedBelow the middle1.75
  14. 1939BAH32-48-15with ducted air handler LUC32-48-15COMFORTSTAR4 tons · 48,000 Btu/h · DuctedBelow the middle1.75
  15. 1940CSS48CD(O)with ducted air handler ASH48SG32COMFORTSTAR4 tons · 48,000 Btu/h · DuctedBelow the middle1.75
  16. 1941NP15H48VR-*GE Appliances (sold as GE)4 tons · 45,000 Btu/h · DuctedBelow the middle1.75
  17. 1942FSH4BE5M1SP42Kwith ducted air handler B65BMMX42K*CGree (sold as Ac Pro)3.5 tons · 40,500 Btu/h · DuctedBelow the middle1.75
  18. 1943FSH4BE5M1SP48Kwith ducted air handler B65EMMX48K*CGree (sold as Ac Pro)4 tons · 46,500 Btu/h · DuctedBelow the middle1.75
  19. 1944FSH4BF5M2SX48Kwith ducted air handler B65VMMX3648K-CGree (sold as Ac Pro)4 tons · 45,500 Btu/h · DuctedBelow the middle1.75
  20. 1945FSH4BF5M2SX60Kwith ducted air handler B65VMMX60K-CGree (sold as Ac Pro)4.5 tons · 53,500 Btu/h · DuctedBelow the middle1.75
  21. 1946WSH4BE5M1SP42Kwith ducted air handler B65BMMX42K*CGree (sold as Ac Pro)3.5 tons · 40,500 Btu/h · DuctedBelow the middle1.75
  22. 1947WSH4BE5M1SP48Kwith ducted air handler B65EMMX48K*CGree (sold as Ac Pro)4 tons · 46,500 Btu/h · DuctedBelow the middle1.75
  23. 1948ZOD-48HIN4-M-SE18with ducted air handler ZVMXFC-48HI1N4-C-M-SE18iCongo4 tons · 48,000 Btu/h · DuctedBelow the middle1.75
  24. 1949ZOT6PA-48HIN4-M-SE15with ducted air handler ZVMXFC-48HIN4-M-SE15iCongo4 tons · 48,000 Btu/h · DuctedBelow the middle1.75
  25. 1950K15HVH48WD2VN3with ducted air handler K15HVH48WD2HN3KeplerX4 tons · 48,000 Btu/h · DuctedBelow the middle1.75

These are certified test ratings, not a recommendation for your home. The right size comes from a load calculation by a contractor.

What size is my system?

Tons and Btu

A heat pump’s size is its rated cooling output, in Btu per hour. Installers talk in tons: one ton is 12,000 Btu per hour, so a 3-ton unit is about 36,000.

Where to find yours: the nameplate sticker on the outdoor unit lists the model number. Many model numbers include the size in thousands of Btu, such as 24 (2 tons), 36 (3 tons) or 48 (4 tons). Your quote or AHRI certificate also lists it. Look up a model number

These are certified test ratings, not a recommendation for your home. The right size comes from a load calculation by a contractor.

Size classes used here

  • Up to 1.5 tonsunder 21,000 Btu/h
  • 2 tons21,000–26,999 Btu/h
  • 2.5–3 tons27,000–38,999 Btu/h
  • 3.5–4.5 tons39,000–56,999 Btu/h
  • 5 tons and up57,000 Btu/h and up

The advanced view lists every model with filters for brand, standard, size and type, sortable by any rating.

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