Everwell vs Hessaire heat pumps

Measured against models of the same size and duct type, Hessaire scores higher on 5 of the 6 ratings. Everwell has 27 outdoor models, Hessaire has 11 outdoor models. Everwell and Hessaire have no QMID on file and are not ranked.

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CompareData as of Oct 11, 2026updated Oct 11, 2026 · 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 Hessaire 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, Hessaire scores higher on 5 of the 6 ratings.

Everwell
Hessaire
Other ranked manufacturers

Source: AHRI Directory, NEEP · as of Oct 11, 2026

Average peer percentile, raw median and rank among ranked manufacturers
Rating	Everwell	Hessaire
Efficiency index	14%median —	50%median —
COP at 5°F	22%median 1.80	35%median 1.86
Capacity retention at 5°F	16%median 61%	50%median 70%
HSPF2	16%median 7.8	39%median 8.5
SEER2	22%median 17.0	46%median 17.5
EER2	27%median 10.0	31%median 10.2
Heating capacity at 5°F	62% (higher)median 11,600 Btu/h	52% (higher)median 18,000 Btu/h
Outdoor models	27	11
AHRI certifications	31	11

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Everwell	Hessaire
CEE 2025 Tier 1 (Split ASHP)	0%0 models	54.5%6 models
CEE 2026 Tier 1 (Split ASHP)	0%0 models	54.5%6 models
CEE Advanced Tier (Split ASHP)	0%0 models	0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)	0%0 models	36.4%4 models
DOE Cold Climate Heat Pump Challenge	0%0 models	0%0 models
ENERGY STAR Cold Climate	0%0 models	36.4%4 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 · 5 groups where both have models

Everwell
Hessaire
All models of the group

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

Source: AHRI Directory · as of Oct 11, 2026

Models per peer group · efficiency index within the group
Size and duct type	Everwell	Hessaire
Ducted, up to 1.5 tons	1 · index —	None
Ducted, 2 tons	2 · index —	1 · index 48%
Ducted, 2.5–3 tons	3 · index —	1 · index 63%
Ducted, 3.5–4.5 tons	5 · index —	2 · index 51%
Non-ducted, up to 1.5 tons	10 · index 14%	5 · index 46%
Non-ducted, 2 tons	2 · index —	2 · index 43%
Non-ducted, 2.5–3 tons	4 · index —	None

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 type	EverwellCold-climate score, best model	HessaireCold-climate score, best model
Ducted, up to 1.5 tons	None on this board (0 of 1 models qualify)	No models in this size class
Ducted, 2 tons	None on this board (0 of 2 models qualify)	61.7(50 is the typical model of its size class)HOC24with ducted air handler HAH241 of 1 models qualify · AHRI 212524529
Ducted, 2.5–3 tons	None on this board (0 of 3 models qualify)	75.1(50 is the typical model of its size class)HOC36with ducted air handler HAH361 of 1 models qualify · AHRI 212524530
Ducted, 3.5–4.5 tons	None on this board (0 of 5 models qualify)	None on this board (0 of 2 models qualify)
Non-ducted, up to 1.5 tons	None on this board (0 of 10 models qualify)	34.7(50 is the typical model of its size class)H12E1with ductless indoor unit H12E11 of 5 models qualify · AHRI 206913622
Non-ducted, 2 tons	None on this board (0 of 2 models qualify)	32.2(50 is the typical model of its size class)H24E2with ductless indoor unit H24E21 of 2 models qualify · AHRI 213286799
Non-ducted, 2.5–3 tons	None on this board (0 of 4 models qualify)	No models in this size class

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 type	EverwellAll-around score, best model	HessaireAll-around score, best model
Ducted, up to 1.5 tons	None on this board (0 of 1 models have all five ratings)	No models in this size class
Ducted, 2 tons	None on this board (0 of 2 models have all five ratings)	48.4(50 is the typical model of its size class)HOC24with ducted air handler HAH241 of 1 models have all five ratings · AHRI 212524529
Ducted, 2.5–3 tons	None on this board (0 of 3 models have all five ratings)	63.2(50 is the typical model of its size class)HOC36with ducted air handler HAH361 of 1 models have all five ratings · AHRI 212524530
Ducted, 3.5–4.5 tons	None on this board (0 of 5 models have all five ratings)	57.1(50 is the typical model of its size class)HOC48with ducted air handler HAH482 of 2 models have all five ratings · AHRI 212524531
Non-ducted, up to 1.5 tons	14.2(50 is the typical model of its size class)MGTH1823C-20with ductless indoor unit MGTH1823E-201 of 10 models have all five ratings · AHRI 205415927	46.8(50 is the typical model of its size class) (higher)H18E2with ductless indoor unit H18E22 of 5 models have all five ratings · AHRI 206913623
Non-ducted, 2 tons	None on this board (0 of 2 models have all five ratings)	42.6(50 is the typical model of its size class)H24E2with ductless indoor unit H24E21 of 2 models have all five ratings · AHRI 213286799
Non-ducted, 2.5–3 tons	None on this board (0 of 4 models have all five ratings)	No models in this size class

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
Rating	Everwell	Hessaire
COP at 5°F	beats 22% · 1.80MGTH1823C-20Non-ducted, up to 1.5 tons	beats 75% · 2.05HOC36Ducted, 2.5–3 tons
Capacity retention at 5°F	beats 16% · 61%MGTH1823C-20Non-ducted, up to 1.5 tons	beats 63% · 76%HOC36Ducted, 2.5–3 tons
HSPF2	beats 49% · 8.1CAC4813H18Ducted, 3.5–4.5 tons	beats 83% · 9.5HOC36Ducted, 2.5–3 tons
SEER2	beats 65% · 16.0CAC4813H18Ducted, 3.5–4.5 tons	beats 82% · 17.5HOC48Ducted, 3.5–4.5 tons
EER2	beats 76% · 12.2CAC2413H18Ducted, 2 tons	beats 68% · 13.0H18E2Non-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 61% · 11,600 Btu/hMGTH1823C-20Non-ducted, up to 1.5 tons	beats 66% · 11,900 Btu/hH18E2Non-ducted, up to 1.5 tons

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