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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. 1351A-ZKP12SA-1with ductless indoor unit B-ZKP12SA-1Kerr1 ton · 12,000 Btu/h · DuctlessGood2.00
  2. 1352KMHR319-H221-4KLIMAIRE1.5 tons · 19,000 Btu/h · DuctlessGood2.00
  3. 1353KMIP218-H225-4KLIMAIRE1.5 tons · 18,000 Btu/h · DuctlessGood2.00
  4. 1354KKCA-12EX1with ductless indoor unit KKCA-12WA1Kwiik1 ton · 12,000 Btu/h · DuctlessGood2.00
  5. 1355KKCA-12EX2-SCUwith ductless indoor unit KKCA-12WA2-SCUKwiik1 ton · 12,000 Btu/h · DuctlessGood2.00
  6. 1356A-VHP183A-1Lennox (sold as Comfort-Aire)1.5 tons · 19,000 Btu/h · DuctlessGood2.00
  7. 1357A-ZHP06SA-1with ductless indoor unit B-ZHP06SA-1Lennox (sold as Comfort-Aire)0.5 tons · 6,000 Btu/h · DuctlessGood2.00
  8. 1358A-ZHP09SA-1with ductless indoor unit B-ZHP09SA-1Lennox (sold as Comfort Aire)1 ton · 9,000 Btu/h · DuctlessGood2.00
  9. 1359A-ZHP12SA-1with ductless indoor unit B-ZHP12SA-1Lennox (sold as Comfort-Aire)1 ton · 12,000 Btu/h · DuctlessGood2.00
  10. 1360A-ZHPO9SA-1with ductless indoor unit B-ZHPO9SA-1Lennox (sold as Comfort-Aire)1 ton · 9,000 Btu/h · DuctlessGood2.00
  11. 1361KUSAB091Awith ductless indoor unit KNUAB091ALG1 ton · 9,000 Btu/h · DuctlessGood2.00
  12. 1362KUSAF091Fwith ductless indoor unit KNSAF091FLG1 ton · 9,000 Btu/h · DuctlessGood2.00
  13. 1363KUSAF121Fwith ductless indoor unit KNSAF121FLG1 ton · 12,000 Btu/h · DuctlessGood2.00
  14. 1364KUSAF181Fwith ductless indoor unit KNSAF181FLG1.5 tons · 18,000 Btu/h · DuctlessGood2.00
  15. 1365KUSAG091Gwith ductless indoor unit KNSAG091GLG1 ton · 9,000 Btu/h · DuctlessGood2.00
  16. 1366KUSAG121Gwith ductless indoor unit KNSAG121GLG1 ton · 12,000 Btu/h · DuctlessGood2.00
  17. 1367D5CMHAH18CAKLPS Legacy1.5 tons · 19,000 Btu/h · DuctlessGood2.00
  18. 1368D5CMTAH18CAKLPS Legacy1.5 tons · 18,000 Btu/h · DuctlessGood2.00
  19. 1369D5CPRAH06AAKwith ductless indoor unit D5FPHAH06XAKLPS Legacy0.5 tons · 6,000 Btu/h · DuctlessGood2.00
  20. 1370D5CPRAH09AAKwith ductless indoor unit D5FPHAH09XAKLPS Legacy1 ton · 9,000 Btu/h · DuctlessGood2.00
  21. 1371D5CPRAH12AAKwith ductless indoor unit D5FPHAH12XAKLPS Legacy1 ton · 12,000 Btu/h · DuctlessGood2.00
  22. 1372L01-2Z-18K2V-20S-OLUORISE1.5 tons · 18,000 Btu/h · DuctlessGood2.00
  23. 1373TSB20MBOR2J0X24Maestrale1.5 tons · 18,000 Btu/h · DuctlessGood2.00
  24. 1374TSB20MBOR2J0X24*Maestrale1.5 tons · 18,000 Btu/h · DuctlessGood2.00
  25. 1375TFM2G18CHAIR454BManuflow1.5 tons · 18,000 Btu/h · DuctlessGood2.00

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