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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.

Ductless, Up to 1.5 tons: every model, highest efficiency on a 5°f day first

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

Showing Ductless, Up to 1.5 tons (under 21,000 Btu/h cooling). What size is my system?

  1. 3301TW18WH17A5DOwith ductless indoor unit TW18WH17A5DIGree (sold as Tosot)1.5 tons · 18,000 Btu/h · DuctlessBelow the middle1.75
  2. 3302TWH12ZR32AOwith ductless indoor unit TWH12ZR32AIGree (sold as Tosot)1 ton · 12,000 Btu/h · DuctlessBelow the middle1.75
  3. 3303TWH12ZR32DOwith ductless indoor unit TWH12ZR32DIGree (sold as Tosot)1 ton · 12,000 Btu/h · DuctlessBelow the middle1.75
  4. 3304TWH12ZR33AOwith ductless indoor unit TWH12ZR32AIGree (sold as Tosot)1 ton · 12,000 Btu/h · DuctlessBelow the middle1.75
  5. 3305TWH18ZR32DOwith ductless indoor unit TWH18ZR32DIGree (sold as Tosot)1.5 tons · 18,000 Btu/h · DuctlessBelow the middle1.75
  6. 3306WZEN12HPJ132AOwith ductless indoor unit WZEN12HPJ132AHGree1 ton · 12,000 Btu/h · DuctlessBelow the middle1.75
  7. 3307WZEN12HPL132AOwith ductless indoor unit WZEN12HPL132AHGree1 ton · 12,000 Btu/h · DuctlessBelow the middle1.75
  8. 3308WZEN18HPJ132AOwith ductless indoor unit WZEN18HPJ132AHGree1.5 tons · 18,000 Btu/h · DuctlessBelow the middle1.75
  9. 3309APE10N3H2Innova SRL1 ton · 9,000 Btu/h · DuctlessBelow the middle1.75
  10. 3310APE10N4H2Innova SRL1 ton · 9,000 Btu/h · DuctlessBelow the middle1.75
  11. 3311APE10R3H2Innova SRL1 ton · 9,000 Btu/h · DuctlessBelow the middle1.75
  12. 3312APE10R4H2Innova SRL1 ton · 9,000 Btu/h · DuctlessBelow the middle1.75
  13. 3313APK10N3H2Innova SRL1 ton · 9,000 Btu/h · DuctlessBelow the middle1.75
  14. 3314APK10N4H2Innova SRL1 ton · 9,000 Btu/h · DuctlessBelow the middle1.75
  15. 3315APK10R3H2Innova SRL1 ton · 9,000 Btu/h · DuctlessBelow the middle1.75
  16. 3316APK10R4H2Innova SRL1 ton · 9,000 Btu/h · DuctlessBelow the middle1.75
  17. 3317APP10N3H1Innova SRL1 ton · 9,000 Btu/h · DuctlessBelow the middle1.75
  18. 3318APP10N4H2Innova SRL1 ton · 9,000 Btu/h · DuctlessBelow the middle1.75
  19. 3319APP10R3H2Innova SRL1 ton · 9,000 Btu/h · DuctlessBelow the middle1.75
  20. 3320APP10R4H2Innova SRL1 ton · 9,000 Btu/h · DuctlessBelow the middle1.75
  21. 3321AFP09R3H1Innova0.5 tons · 6,700 Btu/h · DuctlessBelow the middle1.75
  22. 3322APE10*3*2Innova1 ton · 9,000 Btu/h · DuctlessBelow the middle1.75
  23. 3323APE10N3H1-3Innova1 ton · 9,000 Btu/h · DuctlessBelow the middle1.75
  24. 3324APE10N3H2Innova1 ton · 9,000 Btu/h · DuctlessBelow the middle1.75
  25. 3325APE10N3H2-3Innova1 ton · 9,000 Btu/h · DuctlessBelow 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.

Open the advanced view