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InfinityLiving vs KeplerX heat pumps

Measured against models of the same size and duct type, KeplerX scores higher on 4 of the 6 ratings. InfinityLiving has 16 outdoor models, KeplerX has 8 outdoor models. InfinityLiving and KeplerX 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.
InfinityLiving and KeplerX 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, KeplerX scores higher on 4 of the 6 ratings.
  • InfinityLiving
  • KeplerX
  • Other ranked manufacturers
Infinity…KeplerX

Source: AHRI Directory, NEEP · as of

Average peer percentile, raw median and rank among ranked manufacturers
RatingInfinityLivingKeplerX
Efficiency index45%median —53%median —
COP at 5°F42%median 1.8749%median 1.91
Capacity retention at 5°F43%median 66%78%median 82%
HSPF254% (higher)median 9.433% (higher)median 7.5
SEER251% (higher)median 19.722% (higher)median 14.3
EER236%median 10.854%median 11.5
Heating capacity at 5°F48%median 18,300 Btu/h95%median 48,500 Btu/h
Outdoor models168
AHRI certifications1612

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
StandardInfinityLivingKeplerX
CEE 2025 Tier 1 (Split ASHP)56.3%9 models0%0 models
CEE 2026 Tier 1 (Split ASHP)56.3%9 models0%0 models
CEE Advanced Tier (Split ASHP)0%0 models0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)25%4 models0%0 models
DOE Cold Climate Heat Pump Challenge0%0 models0%0 models
ENERGY STAR Cold Climate37.5%6 models0%0 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 · 3 groups where both have models
  • InfinityLiving
  • KeplerX
  • 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 typeInfinityLivingKeplerX
Ducted, 2 tons1 · index 67%1 · index —
Ducted, 2.5–3 tons1 · index 56%2 · index —
Ducted, 3.5–4.5 tons2 · index 54%4 · index 53%
Ducted, up to 1.5 tonsNone1 · index —
Non-ducted, up to 1.5 tons6 · index 41%None
Non-ducted, 2 tons2 · index 38%None
Non-ducted, 2.5–3 tons3 · index 42%None
Non-ducted, 3.5–4.5 tons1 · index 42%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 typeInfinityLivingCold-climate score, best modelKeplerXCold-climate score, best model
Ducted, up to 1.5 tonsNo models in this size classNone on this board (0 of 1 models qualify)
Ducted, 2 tons69.5(50 is the typical model of its size class)EZ-24-HPwith ducted air handler EZ-24-AH1 of 1 models qualify · AHRI 214810558None on this board (0 of 1 models qualify)
Ducted, 2.5–3 tons74.8(50 is the typical model of its size class)EZ-36-HPwith ducted air handler EZ-36-AH1 of 1 models qualify · AHRI 215463876None on this board (0 of 2 models qualify)
Ducted, 3.5–4.5 tons77.1(50 is the typical model of its size class) (higher)EZ-60-HPwith ducted air handler EZ-60-AH2 of 2 models qualify · AHRI 21481056071.3(50 is the typical model of its size class)K18HVH60WD2Uwith ducted air handler K18HVH60WD2H1 of 4 models qualify · AHRI 214655291
Non-ducted, up to 1.5 tons53.6(50 is the typical model of its size class)EZ-18Z-M21 of 6 models qualify · AHRI 214810596No models in this size class
Non-ducted, 2 tonsNone on this board (0 of 2 models qualify)No models in this size class
Non-ducted, 2.5–3 tons53.7(50 is the typical model of its size class)EZ-27Z-M31 of 3 models qualify · AHRI 214810597No models in this size class
Non-ducted, 3.5–4.5 tonsNone on this board (0 of 1 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 typeInfinityLivingAll-around score, best modelKeplerXAll-around score, best model
Ducted, up to 1.5 tonsNo models in this size classNone on this board (0 of 1 models have all five ratings)
Ducted, 2 tons67.3(50 is the typical model of its size class)EZ-24-HPwith ducted air handler EZ-24-AH1 of 1 models have all five ratings · AHRI 214810558None on this board (0 of 1 models have all five ratings)
Ducted, 2.5–3 tons56.2(50 is the typical model of its size class)EZ-36-HPwith ducted air handler EZ-36-AH1 of 1 models have all five ratings · AHRI 215463876None on this board (0 of 2 models have all five ratings)
Ducted, 3.5–4.5 tons56.2(50 is the typical model of its size class) (higher)EZ-60-HPwith ducted air handler EZ-60-AH2 of 2 models have all five ratings · AHRI 21481056053.3(50 is the typical model of its size class)K18HVH60WD2Uwith ducted air handler K18HVH60WD2H1 of 4 models have all five ratings · AHRI 214655291
Non-ducted, up to 1.5 tons59.1(50 is the typical model of its size class)EZ-18ZPL-HP230with ductless indoor unit EZ-18W-M6 of 6 models have all five ratings · AHRI 214810594No models in this size class
Non-ducted, 2 tons51.4(50 is the typical model of its size class)EZ-24ZPL-HP230with ductless indoor unit EZ-24W-M2 of 2 models have all five ratings · AHRI 214810595No models in this size class
Non-ducted, 2.5–3 tons62.5(50 is the typical model of its size class)EZ-27Z-M33 of 3 models have all five ratings · AHRI 214810597No models in this size class
Non-ducted, 3.5–4.5 tons42.4(50 is the typical model of its size class)EZ-48Z-M51 of 1 models have all five ratings · AHRI 214810573No 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
RatingInfinityLivingKeplerX
COP at 5°Fbeats 78% · 2.10EZ-12Z-HP115Non-ducted, up to 1.5 tonsbeats 49% · 1.91K18HVH60WD2UDucted, 3.5–4.5 tons
Capacity retention at 5°Fbeats 95% · 94%EZ-48-HPDucted, 3.5–4.5 tonsbeats 75% · 82%K18HVH60WD2UDucted, 3.5–4.5 tons
HSPF2beats 87% · 9.4EZ-48-HPDucted, 3.5–4.5 tonsbeats 87% · 9.4K18HVH60WD2UDucted, 3.5–4.5 tons
SEER2beats 74% · 22.0EZ-27Z-M3Non-ducted, 2.5–3 tonsbeats 50% · 15.3K18HVH60WD2UDucted, 3.5–4.5 tons
EER2beats 67% · 12.0EZ-27Z-M3Non-ducted, 2.5–3 tonsbeats 68% · 11.5K15HVH42W2VDucted, 3.5–4.5 tons
Heating capacity at 5°Fbeats 99% · 54,356 Btu/hEZ-60-HPDucted, 3.5–4.5 tonsbeats 95% · 48,500 Btu/hK18HVH60WD2UDucted, 3.5–4.5 tons

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