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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, 2.5–3 tons: every model, highest efficiency on a 5°f day first

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

Showing Ducted, 2.5–3 tons (27,000–38,999 Btu/h cooling). What size is my system?

  1. 1801PHB536000K000B*MSH LEGACY3 tons · 35,200 Btu/h · DuctedBelow the middle1.70
  2. 1802FCH530***ANATIONAL2.5 tons · 28,400 Btu/h · DuctedBelow the middle1.70
  3. 1803PKHP-M-0301BBGree (sold as Ac Pro)2.5 tons · 28,200 Btu/h · DuctedBelow the middle1.69
  4. 1804KPHD-30MB134GKaden2.5 tons · 28,200 Btu/h · DuctedBelow the middle1.69
  5. 1805MRD-30HWN10-M134GMidea2.5 tons · 28,200 Btu/h · DuctedBelow the middle1.69
  6. 1806J5PD4030*Trane (sold as Oxbox)2.5 tons · 28,200 Btu/h · DuctedBelow the middle1.69
  7. 1807LDT036H5E*1GLennox3 tons · 35,600 Btu/h · DuctedBelow the middle1.68
  8. 1808LDT036H5E*1JLennox3 tons · 35,600 Btu/h · DuctedBelow the middle1.68
  9. 1809LDT036H5E*1PLennox3 tons · 35,600 Btu/h · DuctedBelow the middle1.68
  10. 1810LDT036H5E*1YLennox3 tons · 35,600 Btu/h · DuctedBelow the middle1.68
  11. 1811LHT036H5E*1GLennox3 tons · 35,600 Btu/h · DuctedBelow the middle1.68
  12. 1812LHT036H5E*1JLennox3 tons · 35,600 Btu/h · DuctedBelow the middle1.68
  13. 1813LHT036H5E*1PLennox3 tons · 35,600 Btu/h · DuctedBelow the middle1.68
  14. 1814LHT036H5E*1YLennox3 tons · 35,600 Btu/h · DuctedBelow the middle1.68
  15. 1815CPH7-36-15COMFORTSTAR3 tons · 34,200 Btu/h · DuctedBelow the middle1.65
  16. 1816PKHP-P-0361BBGree (sold as Ac Pro)3 tons · 34,200 Btu/h · DuctedBelow the middle1.65
  17. 1817KPHS-36MB134LKaden3 tons · 34,200 Btu/h · DuctedBelow the middle1.65
  18. 1818MRC-36HWN10-M134LMidea3 tons · 34,200 Btu/h · DuctedBelow the middle1.65
  19. 1819MPH361HO13CMRCOOL3 tons · 34,200 Btu/h · DuctedBelow the middle1.65
  20. 1820PHP0362301134HSNCXFC454BSinclair3 tons · 34,200 Btu/h · DuctedBelow the middle1.65
  21. 1821MTHP036ATGM3 tons · 34,200 Btu/h · DuctedBelow the middle1.65
  22. 1822J5PH4036*Trane (sold as Oxbox)3 tons · 34,200 Btu/h · DuctedBelow the middle1.65
  23. 1823TPH4036E100ATUTTOKOOL3 tons · 34,200 Btu/h · DuctedBelow the middle1.65
  24. 1824ART-HF30SSMR3-D01/SE134APLUS2.5 tons · 28,200 Btu/h · DuctedBelow the middle1.64
  25. 1825SRHP3600S1ACentury3 tons · 34,000 Btu/h · DuctedBelow the middle1.64

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.

Open the advanced view