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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. 3426ZMSB-12HVT-USR1with ductless indoor unit ZMSB-12HVT-USR1ZERO1 ton · 11,500 Btu/h · DuctlessBelow the middle1.75
  2. 3427TAC-12CHSA/*2I-X17R-Owith ductless indoor unit TAC-12CHSA/*2I-X17R-IZOKOP1 ton · 11,500 Btu/h · DuctlessBelow the middle1.75
  3. 3428TAC-12CHSA/*2I-X17R-O*with ductless indoor unit TAC-12CHSA/*2I-X17R-IZOKOP1 ton · 11,500 Btu/h · DuctlessBelow the middle1.75
  4. 3429ZP12T2CHSA17-Owith ductless indoor unit ZP12T2CHSA17-IZOKOP1 ton · 11,500 Btu/h · DuctlessBelow the middle1.75
  5. 3430GRHFR32C18AS2with ductless indoor unit GWHFR32C18S2CLASSIC1.5 tons · 18,000 Btu/h · DuctlessBelow the middle1.70
  6. 3431DMLHT1W-12R4BBPH1with ductless indoor unit DMLHT1G-12R4BBPH1DEMULLER1 ton · 12,000 Btu/h · DuctlessBelow the middle1.70
  7. 3432DMLHT1W-12R4CBPH1with ductless indoor unit DMLHT1G-12R4CBPH1DEMULLER1 ton · 12,000 Btu/h · DuctlessBelow the middle1.70
  8. 3433IMHCAC-0041with ductless indoor unit IMHCAC-0040DWVO1 ton · 12,000 Btu/h · DuctlessBelow the middle1.70
  9. 3434DMLHT1W-12R4BBPH1with ductless indoor unit DMLHT1G-12R4BBPH1ESRIGHT1 ton · 12,000 Btu/h · DuctlessBelow the middle1.70
  10. 3435DMLHT1W-12R4CBPH1with ductless indoor unit DMLHT1G-12R4CBPH1ESRIGHT1 ton · 12,000 Btu/h · DuctlessBelow the middle1.70
  11. 3436DAC12-2-S17-Awith ductless indoor unit DAC12-2-S17-BGARVEE1 ton · 12,000 Btu/h · DuctlessBelow the middle1.70
  12. 3437DAC12-S17-Awith ductless indoor unit DAC12-S17-BGARVEE1 ton · 12,000 Btu/h · DuctlessBelow the middle1.70
  13. 3438DMLHT1W-12R4BBPH1with ductless indoor unit DMLHT1G-12R4BBPH1JIEJIA1 ton · 12,000 Btu/h · DuctlessBelow the middle1.70
  14. 3439DMLHT1W-12R4CBPH1with ductless indoor unit DMLHT1G-12R4CBPH1JIEJIA1 ton · 12,000 Btu/h · DuctlessBelow the middle1.70
  15. 3440KUSAE091Awith ductless indoor unit KNSAE091ALG1 ton · 9,000 Btu/h · DuctlessBelow the middle1.70
  16. 3441KUSAE121Awith ductless indoor unit KNSAE121ALG1 ton · 11,000 Btu/h · DuctlessBelow the middle1.70
  17. 3442KUSAE181Awith ductless indoor unit KNSAE181ALG1.5 tons · 18,000 Btu/h · DuctlessBelow the middle1.70
  18. 3443KUSAZ091Awith ductless indoor unit KNSAZ091ALG1 ton · 9,000 Btu/h · DuctlessBelow the middle1.70
  19. 3444KUSAZ121Awith ductless indoor unit KNSAZ121ALG1 ton · 11,000 Btu/h · DuctlessBelow the middle1.70
  20. 3445KUSAZ122Awith ductless indoor unit KNSAZ122ALG1 ton · 12,000 Btu/h · DuctlessBelow the middle1.70
  21. 3446KUSAZ181Awith ductless indoor unit KNSAZ181ALG1.5 tons · 18,000 Btu/h · DuctlessBelow the middle1.70
  22. 3447DMLHT1W-12R4BBPH1with ductless indoor unit DMLHT1G-12R4BBPH1MANASTIN1 ton · 12,000 Btu/h · DuctlessBelow the middle1.70
  23. 3448DMLHT1W-12R4CBPH1with ductless indoor unit DMLHT1G-12R4CBPH1MANASTIN1 ton · 12,000 Btu/h · DuctlessBelow the middle1.70
  24. 3449TSAC24-0745-L120-2with ductless indoor unit TSAC24-0745-L120-1MANASTIN1 ton · 12,000 Btu/h · DuctlessBelow the middle1.70
  25. 3450TSAC24-0745-S120-2with ductless indoor unit TSAC24-0745-S120-1MANASTIN1 ton · 12,000 Btu/h · DuctlessBelow the middle1.70

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