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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. 3126ZMSB-18HVT-USHHCR2with ductless indoor unit ZMSB-18HVT-USHHCR2ZERO1.5 tons · 18,000 Btu/h · DuctlessBelow the middle1.80
  2. 3127ZMSB-18HVT-USHHCR2*with ductless indoor unit ZMSB-18HVT-USHHCR2ZERO1.5 tons · 18,000 Btu/h · DuctlessBelow the middle1.80
  3. 3128ZMSB-18HVT-USHHR2with ductless indoor unit ZMSB-18HVT-USHHR2ZERO1.5 tons · 18,000 Btu/h · DuctlessBelow the middle1.80
  4. 3129ZMSB-18HVT-USR1with ductless indoor unit ZMSB-18HVT-USR1ZERO1.5 tons · 17,000 Btu/h · DuctlessBelow the middle1.80
  5. 3130ZMSB-18HVT-USR1-S24-Owith ductless indoor unit ZMSB-18HVT-USR1-S24-IZERO1.5 tons · 18,000 Btu/h · DuctlessBelow the middle1.80
  6. 3131ZMSB-18HVT-USR2with ductless indoor unit ZMSB-18HVT-USR2ZERO1.5 tons · 18,000 Btu/h · DuctlessBelow the middle1.80
  7. 3132TAC-18CHSA/*2I-X17R-Owith ductless indoor unit TAC-18CHSA/*2I-X17R-IZOKOP1.5 tons · 17,000 Btu/h · DuctlessBelow the middle1.80
  8. 3133TAC-18CHSA/*2I-X17R-O*with ductless indoor unit TAC-18CHSA/*2I-X17R-IZOKOP1.5 tons · 17,000 Btu/h · DuctlessBelow the middle1.80
  9. 3134TMSC-12HA2/I2XI19B-O*with ductless indoor unit TMSC-12HA2/I2XI19B-IZOKOP1 ton · 12,000 Btu/h · DuctlessBelow the middle1.80
  10. 3135TMSC-18HA2/I2XI19B-O*with ductless indoor unit TMSC-18HA2/I2XI19B-IZOKOP1.5 tons · 18,000 Btu/h · DuctlessBelow the middle1.80
  11. 3136TSC-12HA1/I2XI20B-Owith ductless indoor unit TSC-12HA1/I2XI20B-IZOKOP1 ton · 12,000 Btu/h · DuctlessBelow the middle1.80
  12. 3137TSC-12HA1/I2XI20B-O*with ductless indoor unit TSC-12HA1/I2XI20B-IZOKOP1 ton · 12,000 Btu/h · DuctlessBelow the middle1.80
  13. 3138TSC-12HA2/I2XI19B-Owith ductless indoor unit TSC-12HA2/I2XI19B-IZOKOP1 ton · 12,000 Btu/h · DuctlessBelow the middle1.80
  14. 3139TSC-12HA2/I2XI19B-O*with ductless indoor unit TSC-12HA2/I2XI19B-IZOKOP1 ton · 12,000 Btu/h · DuctlessBelow the middle1.80
  15. 3140TSC-18HA2/I2XI19B-Owith ductless indoor unit TSC-18HA2/I2XI19B-IZOKOP1.5 tons · 18,000 Btu/h · DuctlessBelow the middle1.80
  16. 3141TSC-18HA2/I2XI19B-O*with ductless indoor unit TSC-18HA2/I2XI19B-IZOKOP1.5 tons · 18,000 Btu/h · DuctlessBelow the middle1.80
  17. 3142ZP09T1/20-Owith ductless indoor unit ZP09T1/20-IZOKOP1 ton · 9,000 Btu/h · DuctlessBelow the middle1.80
  18. 3143ZP12T1/20-Owith ductless indoor unit ZP12T1/20-IZOKOP1 ton · 12,000 Btu/h · DuctlessBelow the middle1.80
  19. 3144ZP12T2/19-Owith ductless indoor unit ZP12T2/19-IZOKOP1 ton · 12,000 Btu/h · DuctlessBelow the middle1.80
  20. 3145ZP18T2/19-Owith ductless indoor unit ZP18T2/19-IZOKOP1.5 tons · 18,000 Btu/h · DuctlessBelow the middle1.80
  21. 3146ZP18T2CHSA17-Owith ductless indoor unit ZP18T2CHSA17-IZOKOP1.5 tons · 17,000 Btu/h · DuctlessBelow the middle1.80
  22. 3147ACIQ-K12Z-HP115Bwith ductless indoor unit ACIQ-K12W-W-HP115BACIQ1 ton · 12,000 Btu/h · DuctlessBelow the middle1.79
  23. 3148MYTW12NA13BCH20/Owith ductless indoor unit MYTW12NA13BCH20/IBestcold1 ton · 12,000 Btu/h · DuctlessBelow the middle1.79
  24. 3149CEL-BH121A-Owith ductless indoor unit CEL-BH121A-IComfort Temps1 ton · 12,000 Btu/h · DuctlessBelow the middle1.79
  25. 3150DRE1U12S2Awith ductless indoor unit DREW12S2ALDurastar1 ton · 12,000 Btu/h · DuctlessBelow the middle1.79

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