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Everwell vs HAXXAIR heat pumps

Measured against models of the same size and duct type, HAXXAIR scores higher on 5 of the 6 ratings. Everwell has 27 outdoor models, HAXXAIR has 26 outdoor models. Everwell and HAXXAIR have no QMID on file and are not ranked.

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CompareData as of updated · sources

Against comparable models

Each cell is the share of same-size, same-type models that the manufacturer’s typical model beats (50% is typical); the higher score is in bold. Raw medians are underneath for context: they depend on which sizes each one makes, so they are not compared.
Everwell and HAXXAIR on every ratingPeer scores, 0–100 · grey ticks: every ranked manufacturer · shaded: the middle half of each one’s modelsMeasured against models of the same size and duct type, HAXXAIR scores higher on 5 of the 6 ratings.
  • Everwell
  • HAXXAIR
  • Other ranked manufacturers
EverwellHAXXAIR

Source: AHRI Directory, NEEP · as of

Average peer percentile, raw median and rank among ranked manufacturers
RatingEverwellHAXXAIR
Efficiency index14%median —57%median —
COP at 5°F22%median 1.8058%median 2.07
Capacity retention at 5°F16%median 61%68%median 80%
HSPF216%median 7.846%median 8.7
SEER222%median 17.049%median 18.5
EER227%median 10.044%median 11.4
Heating capacity at 5°F62%median 11,600 Btu/h62%median 19,000 Btu/h
Outdoor models2726
AHRI certifications3142

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
StandardEverwellHAXXAIR
CEE 2025 Tier 1 (Split ASHP)0%0 models65.4%17 models
CEE 2026 Tier 1 (Split ASHP)0%0 models65.4%17 models
CEE Advanced Tier (Split ASHP)0%0 models0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)0%0 models65.4%17 models
DOE Cold Climate Heat Pump Challenge0%0 models0%0 models
ENERGY STAR Cold Climate0%0 models57.7%15 models

Sizes and duct types offered

Models in each peer group, with the efficiency index of those models against the rest of the group.
Side by side, inside each size and duct typeShape: every model of the group · bars: each manufacturer’s middle half, median dot, 10th–90th line · 7 groups where both have models
  • Everwell
  • HAXXAIR
  • All models of the group
Ducted, up to 1.5 tons2.00884 modelsDucted, 2 tons2.00821 modelsDucted, 2.5–3 tons1.901,614 modelsDucted, 3.5–4.5 tons1.911,492 modelsNon-ducted, up to 1.5 tons1.902,417 modelsNon-ducted, 2 tons1.87611 modelsNon-ducted, 2.5–3 tons1.85975 modelsNon-ducted, 3.5–4.5 tons1.97438 modelsmedian

Raw ratings are only placed side by side within one size and duct type, where they are comparable.

Source: AHRI Directory · as of

Models per peer group · efficiency index within the group
Size and duct typeEverwellHAXXAIR
Ducted, up to 1.5 tons1 · index —3 · index 49%
Ducted, 2 tons2 · index —3 · index 58%
Ducted, 2.5–3 tons3 · index —3 · index 70%
Ducted, 3.5–4.5 tons5 · index —3 · index 58%
Non-ducted, up to 1.5 tons10 · index 14%12 · index 55%
Non-ducted, 2 tons2 · index —5 · index 59%
Non-ducted, 2.5–3 tons4 · index —4 · index 61%
Non-ducted, 3.5–4.5 tonsNone1 · index 40%

Cold-climate and all-around picks, size class by size class

Each manufacturer’s best model on each board in every size and duct type, side by side; the higher score is in bold. Both scores are 0–100 against every model of that size class (the line on each bar is 50, the typical model there), so the two compare fairly even when they make different sizes.

Cold-climate picks

Best cold-climate pick per size and duct type (keeps at least 70% of its heat at 5°F). Qualifies when its capacity retention at 5°F (capacity at 5°F as a share of capacity at 47°F) is at least 70% and Capacity retention at 5°F, COP at 5°F, HSPF2 are all rated. Score = the equal-weight mean of its peer percentiles on Capacity retention at 5°F, COP at 5°F, HSPF2 (share of the other models in its peer group it beats, 0–100), all from one certified pairing: in each duct type a model is sold in, its qualifying pairing of that type with the best score; equal scores (one decimal) go to the higher heating capacity at 5°F.
Size and duct typeEverwellCold-climate score, best modelHAXXAIRCold-climate score, best model
Ducted, up to 1.5 tonsNone on this board (0 of 1 models qualify)54.4(50 is the typical model of its size class)HVHSC-18T2Dwith ducted air handler HAHS-18T2D3 of 3 models qualify · AHRI 205921368
Ducted, 2 tonsNone on this board (0 of 2 models qualify)64.8(50 is the typical model of its size class)HVHSC-24T2Dwith ducted air handler HAHS-24T2D3 of 3 models qualify · AHRI 214855367
Ducted, 2.5–3 tonsNone on this board (0 of 3 models qualify)78.1(50 is the typical model of its size class)HVHSC-36T2Dwith ducted air handler HAHS-36T2D3 of 3 models qualify · AHRI 214855368
Ducted, 3.5–4.5 tonsNone on this board (0 of 5 models qualify)73.3(50 is the typical model of its size class)HVHD-48E2D2with ducted air handler DC61A44-245R2 of 3 models qualify · AHRI 214264495
Non-ducted, up to 1.5 tonsNone on this board (0 of 10 models qualify)73.0(50 is the typical model of its size class)HVHSC-18T2Dwith ductless indoor unit HAHC-18T2D7 of 12 models qualify · AHRI 205921367
Non-ducted, 2 tonsNone on this board (0 of 2 models qualify)72.0(50 is the typical model of its size class)HVHSC-24T2Dwith ductless indoor unit HAH-24T2D4 of 5 models qualify · AHRI 214855369
Non-ducted, 2.5–3 tonsNone on this board (0 of 4 models qualify)77.2(50 is the typical model of its size class)HVHSC-36T2Dwith ductless indoor unit HAH-36T2D2 of 4 models qualify · AHRI 214855370
Non-ducted, 3.5–4.5 tonsNo models in this size class41.9(50 is the typical model of its size class)HVHM-42T2D1 of 1 models qualify · AHRI 212396481

All-around best

Best all-around model per size and duct type. Score = 50% heating, the mean of its peer percentiles on COP at 5°F, Capacity retention at 5°F, HSPF2, plus 50% cooling, the mean of its peer percentiles on SEER2 and EER2 (share of the other models in its peer group it beats, 0–100). All five ratings are required; there is no minimum heat kept at 5°F. In each duct type a model is sold in, it is scored on its pairing of that type with the best score; equal scores (one decimal) go to the higher cold-climate score, then the higher heating capacity at 5°F.
Size and duct typeEverwellAll-around score, best modelHAXXAIRAll-around score, best model
Ducted, up to 1.5 tonsNone on this board (0 of 1 models have all five ratings)50.7(50 is the typical model of its size class)HVHSC-18T2Dwith ducted air handler HAHS-18T2D3 of 3 models have all five ratings · AHRI 205921368
Ducted, 2 tonsNone on this board (0 of 2 models have all five ratings)71.6(50 is the typical model of its size class)HVHM-24T2D3 of 3 models have all five ratings · AHRI 204032224
Ducted, 2.5–3 tonsNone on this board (0 of 3 models have all five ratings)78.6(50 is the typical model of its size class)HVHM-36T2D3 of 3 models have all five ratings · AHRI 204032225
Ducted, 3.5–4.5 tonsNone on this board (0 of 5 models have all five ratings)68.8(50 is the typical model of its size class)HVHD-48E2D2with ducted air handler DC61A44-245R3 of 3 models have all five ratings · AHRI 214264495
Non-ducted, up to 1.5 tons14.2(50 is the typical model of its size class)MGTH1823C-20with ductless indoor unit MGTH1823E-201 of 10 models have all five ratings · AHRI 20541592770.2(50 is the typical model of its size class) (higher)HVHSC-18T2Dwith ductless indoor unit HAH-18T2D8 of 12 models have all five ratings · AHRI 214855372
Non-ducted, 2 tonsNone on this board (0 of 2 models have all five ratings)67.5(50 is the typical model of its size class)HVHM-24T2D4 of 5 models have all five ratings · AHRI 204198639
Non-ducted, 2.5–3 tonsNone on this board (0 of 4 models have all five ratings)69.4(50 is the typical model of its size class)HVHM-36T2D2 of 4 models have all five ratings · AHRI 204100526
Non-ducted, 3.5–4.5 tonsNo models in this size class44.4(50 is the typical model of its size class)HVHM-42T2D1 of 1 models have all five ratings · AHRI 212510994

All-around board, every manufacturer

Standout model on each rating

Each manufacturer’s model that beats the largest share of comparable models on the rating; the higher share is in bold.
Top model per rating by peer percentile, with its AHRI-certified value and peer group
RatingEverwellHAXXAIR
COP at 5°Fbeats 22% · 1.80MGTH1823C-20Non-ducted, up to 1.5 tonsbeats 96% · 2.28HVHSC-36T2DNon-ducted, 2.5–3 tons
Capacity retention at 5°Fbeats 16% · 61%MGTH1823C-20Non-ducted, up to 1.5 tonsbeats 99% · 113%HVHM-36T2DNon-ducted, 2.5–3 tons
HSPF2beats 49% · 8.1CAC4813H18Ducted, 3.5–4.5 tonsbeats 83% · 9.5HVHD-36E2D2Ducted, 2.5–3 tons
SEER2beats 65% · 16.0CAC4813H18Ducted, 3.5–4.5 tonsbeats 96% · 21.0HVHM-24T2DDucted, 2 tons
EER2beats 76% · 12.2CAC2413H18Ducted, 2 tonsbeats 84% · 12.5HVHM-36T2DNon-ducted, 2.5–3 tons
Heating capacity at 5°Fbeats 61% · 11,600 Btu/hMGTH1823C-20Non-ducted, up to 1.5 tonsbeats 92% · 18,000 Btu/hHVHM-18T2DNon-ducted, up to 1.5 tons

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