Everwell vs Senville heat pumps

Measured against models of the same size and duct type, Senville scores higher on 5 of the 6 ratings. Everwell has 27 outdoor models, Senville has 27 outdoor models. Everwell has no QMID on file and is 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 Senville 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, Senville scores higher on 5 of the 6 ratings.

Everwell
Senville
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	Everwell	Senville
Efficiency index	14%median —	61%median — · 7th ranked
COP at 5°F	22%median 1.80	44%median 1.91 · 22nd ranked
Capacity retention at 5°F	16%median 61%	60%median 82% · 7th ranked
HSPF2	16%median 7.8	67%median 9.5 · 6th ranked
SEER2	22%median 17.0	67%median 21.4 · 3rd ranked
EER2	27%median 10.0	56%median 11.7 · 11th ranked
Heating capacity at 5°F	62% (higher)median 11,600 Btu/h	58% (higher)median 20,000 Btu/h · 7th ranked
Outdoor models	27	27
AHRI certifications	31	59

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Everwell	Senville
CEE 2025 Tier 1 (Split ASHP)	0%0 models	70.4%19 models
CEE 2026 Tier 1 (Split ASHP)	0%0 models	63%17 models
CEE Advanced Tier (Split ASHP)	0%0 models	3.7%1 models
Xcel Energy Colorado cold-climate ASHP (2025)	0%0 models	44.4%12 models
DOE Cold Climate Heat Pump Challenge	0%0 models	3.7%1 models
ENERGY STAR Cold Climate	0%0 models	51.9%14 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
Senville
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	Senville
Ducted, up to 1.5 tons	1 · index —	5 · index 63%
Ducted, 2 tons	2 · index —	2 · index 73%
Ducted, 2.5–3 tons	3 · index —	5 · index 69%
Ducted, 3.5–4.5 tons	5 · index —	4 · index 63%
Non-ducted, up to 1.5 tons	10 · index 14%	10 · index 54%
Non-ducted, 2 tons	2 · index —	2 · index 50%
Non-ducted, 2.5–3 tons	4 · index —	9 · index 60%
Non-ducted, 3.5–4.5 tons	None	2 · index 67%

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	SenvilleCold-climate score, best model
Ducted, up to 1.5 tons	None on this board (0 of 1 models qualify)	74.9(50 is the typical model of its size class)SENA/09HF/OQwith ducted air handler SENA/09HF/ID5 of 5 models qualify · AHRI 207641345
Ducted, 2 tons	None on this board (0 of 2 models qualify)	79.4(50 is the typical model of its size class)SENA/24HF/OQwith ducted air handler SENA/24HF/ID2 of 2 models qualify · AHRI 207641348
Ducted, 2.5–3 tons	None on this board (0 of 3 models qualify)	79.9(50 is the typical model of its size class)SENA-36HF-MOB3 of 5 models qualify · AHRI 213732657
Ducted, 3.5–4.5 tons	None on this board (0 of 5 models qualify)	74.9(50 is the typical model of its size class)SENA-48HF-MOB3 of 4 models qualify · AHRI 213732660
Non-ducted, up to 1.5 tons	None on this board (0 of 10 models qualify)	77.5(50 is the typical model of its size class)SENA/12HF/OQwith ductless indoor unit SENA/12HF/IQ4 of 10 models qualify · AHRI 207571419
Non-ducted, 2 tons	None on this board (0 of 2 models qualify)	86.1(50 is the typical model of its size class)SENA/24HF/OQwith ductless indoor unit SENA/24HF/ICQ1 of 2 models qualify · AHRI 207641344
Non-ducted, 2.5–3 tons	None on this board (0 of 4 models qualify)	90.9(50 is the typical model of its size class)SENA-36HF-MOB3 of 9 models qualify · AHRI 213732656
Non-ducted, 3.5–4.5 tons	No models in this size class	76.2(50 is the typical model of its size class)SENA-48HF-MOB1 of 2 models qualify · AHRI 213732659

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	SenvilleAll-around score, best model
Ducted, up to 1.5 tons	None on this board (0 of 1 models have all five ratings)	85.2(50 is the typical model of its size class)SENA/09HF/OQwith ducted air handler SENA/09HF/ID5 of 5 models have all five ratings · AHRI 207641345
Ducted, 2 tons	None on this board (0 of 2 models have all five ratings)	80.1(50 is the typical model of its size class)SENA/24HF/OQwith ducted air handler SENA/24HF/ID2 of 2 models have all five ratings · AHRI 207641348
Ducted, 2.5–3 tons	None on this board (0 of 3 models have all five ratings)	83.7(50 is the typical model of its size class)SENA-36HF-MOB5 of 5 models have all five ratings · AHRI 213732657
Ducted, 3.5–4.5 tons	None on this board (0 of 5 models have all five ratings)	82.0(50 is the typical model of its size class)SENA-48HF-MOB4 of 4 models have all five ratings · AHRI 213732660
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	87.6(50 is the typical model of its size class) (higher)SENA/09HF/OQwith ductless indoor unit SENA/09HF/IQ10 of 10 models have all five ratings · AHRI 207571418
Non-ducted, 2 tons	None on this board (0 of 2 models have all five ratings)	84.3(50 is the typical model of its size class)SENA/24HF/OQwith ductless indoor unit SENA/24HF/IQ2 of 2 models have all five ratings · AHRI 207657630
Non-ducted, 2.5–3 tons	None on this board (0 of 4 models have all five ratings)	86.4(50 is the typical model of its size class)SENA-36HF-MOB7 of 9 models have all five ratings · AHRI 213732656
Non-ducted, 3.5–4.5 tons	No models in this size class	77.9(50 is the typical model of its size class)SENA-48HF-MOB2 of 2 models have all five ratings · AHRI 213732659

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	Senville
COP at 5°F	beats 22% · 1.80MGTH1823C-20Non-ducted, up to 1.5 tons	beats 91% · 2.21SENA/24HF/OQNon-ducted, 2 tons
Capacity retention at 5°F	beats 16% · 61%MGTH1823C-20Non-ducted, up to 1.5 tons	beats 97% · 103%SENA-36HF-MOBNon-ducted, 2.5–3 tons
HSPF2	beats 49% · 8.1CAC4813H18Ducted, 3.5–4.5 tons	beats 98% · 12.0SENA/09HF/OQDucted, up to 1.5 tons
SEER2	beats 65% · 16.0CAC4813H18Ducted, 3.5–4.5 tons	beats 99% · 24.6SENA/30HF/MOQNon-ducted, 2.5–3 tons
EER2	beats 76% · 12.2CAC2413H18Ducted, 2 tons	beats 98% · 16.2SENA/09HF/OQNon-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 96% · 20,000 Btu/hSENA-18HF-MOBNon-ducted, up to 1.5 tons

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