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Armbridge vs IWAE heat pumps

Measured against models of the same size and duct type, Armbridge scores higher on 4 of the 6 ratings. Armbridge has 23 outdoor models, IWAE has 23 outdoor models. Armbridge and IWAE 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.
Armbridge and IWAE 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, Armbridge scores higher on 4 of the 6 ratings.
  • Armbridge
  • IWAE
  • Other ranked manufacturers
ArmbridgeIWAE

Source: AHRI Directory, NEEP · as of

Average peer percentile, raw median and rank among ranked manufacturers
RatingArmbridgeIWAE
Efficiency index55% (higher)median —52% (higher)median —
COP at 5°F46% (higher)median 1.9026% (higher)median 1.80
Capacity retention at 5°F50%median 71%61%median 80%
HSPF262% (higher)median 9.535% (higher)median 8.0
SEER264% (higher)median 20.040% (higher)median 17.0
EER249% (higher)median 11.036% (higher)median 11.2
Heating capacity at 5°F49%median 19,000 Btu/h50%median 16,250 Btu/h
Outdoor models2323
AHRI certifications5827

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
StandardArmbridgeIWAE
CEE 2025 Tier 1 (Split ASHP)56.5%13 models34.8%8 models
CEE 2026 Tier 1 (Split ASHP)56.5%13 models34.8%8 models
CEE Advanced Tier (Split ASHP)4.3%1 models0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)60.9%14 models34.8%8 models
DOE Cold Climate Heat Pump Challenge4.3%1 models0%0 models
ENERGY STAR Cold Climate39.1%9 models26.1%6 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
  • Armbridge
  • IWAE
  • All models of the group
Ducted, up to 1.5 tons1.901,783 modelsDucted, 2 tons2.001,090 modelsDucted, 2.5–3 tons2.001,909 modelsDucted, 3.5–4.5 tons2.002,224 modelsNon-ducted, up to 1.5 tons1.953,455 modelsNon-ducted, 2 tons2.00863 modelsNon-ducted, 2.5–3 tons2.001,106 modelsNon-ducted, 3.5–4.5 tons2.00564 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 typeArmbridgeIWAE
Ducted, up to 1.5 tons3 · index 60%1 · index —
Ducted, 2 tons3 · index 58%2 · index 37%
Ducted, 2.5–3 tons5 · index 59%3 · index 52%
Ducted, 3.5–4.5 tons4 · index 60%5 · index 41%
Non-ducted, up to 1.5 tons7 · index 44%8 · index 58%
Non-ducted, 2 tons3 · index 62%2 · index 65%
Non-ducted, 2.5–3 tons5 · index 44%2 · index —
Non-ducted, 3.5–4.5 tons2 · index 74%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 typeArmbridgeCold-climate score, best modelIWAECold-climate score, best model
Ducted, up to 1.5 tons74.7(50 is the typical model of its size class)AB-GTMH18-230VO3 of 3 models qualify · AHRI 218059661None on this board (0 of 1 models qualify)
Ducted, 2 tons63.0(50 is the typical model of its size class) (higher)AB-GTMH24-230VO3 of 3 models qualify · AHRI 21805966242.5(50 is the typical model of its size class)**AESHV8T2421BAwith ducted air handler **AEAMPVT24D21BA1 of 2 models qualify · AHRI 217732895
Ducted, 2.5–3 tons73.8(50 is the typical model of its size class) (higher)AB-GTMR30-230VO3 of 5 models qualify · AHRI 21805965855.4(50 is the typical model of its size class)**AESHV9T3621BAwith ducted air handler **AEAMPVT36D21BA1 of 3 models qualify · AHRI 217732896
Ducted, 3.5–4.5 tons76.8(50 is the typical model of its size class) (higher)AB-GTMR42-230VOAlso listed as AB-GTMH42-230VO2 of 4 models qualify · AHRI 21805966043.2(50 is the typical model of its size class)**AESHV8T4821BAwith ducted air handler **AEAMPVT48F21BA2 of 5 models qualify · AHRI 217732897
Non-ducted, up to 1.5 tons82.7(50 is the typical model of its size class) (higher)AB-GTMH18-230VO5 of 7 models qualify · AHRI 21805965251.8(50 is the typical model of its size class)AEPL**MHV23S0932B1Awith ductless indoor unit AEPL**AWM23E0932B1A5 of 8 models qualify · AHRI 218451556
Non-ducted, 2 tons84.4(50 is the typical model of its size class) (higher)AB-GTMH24-230VO3 of 3 models qualify · AHRI 21805965361.6(50 is the typical model of its size class)AEPL**MHV22S2431B1Awith ductless indoor unit AEPL**AWM22E2431B1A1 of 2 models qualify · AHRI 218451561
Non-ducted, 2.5–3 tons73.2(50 is the typical model of its size class)AB-GTMH36-230VO3 of 5 models qualify · AHRI 218059654None on this board (0 of 2 models qualify)
Non-ducted, 3.5–4.5 tons59.9(50 is the typical model of its size class)AB-GTMR42-230VOAlso listed as AB-GTMH42-230VO2 of 2 models qualify · AHRI 218059669No 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 typeArmbridgeAll-around score, best modelIWAEAll-around score, best model
Ducted, up to 1.5 tons79.0(50 is the typical model of its size class)AB-GTMH18-230VO3 of 3 models have all five ratings · AHRI 218059661None on this board (0 of 1 models have all five ratings)
Ducted, 2 tons78.5(50 is the typical model of its size class) (higher)AB-GTMH24-230VO3 of 3 models have all five ratings · AHRI 21805966237.2(50 is the typical model of its size class)**AESHV8T2421BAwith ducted air handler **AEAMPVT24D21BA1 of 2 models have all five ratings · AHRI 217732895
Ducted, 2.5–3 tons81.2(50 is the typical model of its size class) (higher)AB-GTMH36-230VO5 of 5 models have all five ratings · AHRI 21805966351.6(50 is the typical model of its size class)**AESHV9T3621BAwith ducted air handler **AEAMPVT36D21BA1 of 3 models have all five ratings · AHRI 217732896
Ducted, 3.5–4.5 tons87.0(50 is the typical model of its size class) (higher)AB-GTMR42-230VOAlso listed as AB-GTMH42-230VO4 of 4 models have all five ratings · AHRI 21805966043.2(50 is the typical model of its size class)**AESHV8T4821BAwith ducted air handler **AEAMPVT48F21BA2 of 5 models have all five ratings · AHRI 217732897
Non-ducted, up to 1.5 tons74.3(50 is the typical model of its size class) (higher)AB-GTMH18-230VO7 of 7 models have all five ratings · AHRI 21805965263.4(50 is the typical model of its size class)AEPL**MHV23S1232B1Awith ductless indoor unit AEPL**AWM23E1232B1AAlso listed as AEPL**MHV23S1231B1A5 of 8 models have all five ratings · AHRI 218451557
Non-ducted, 2 tons85.3(50 is the typical model of its size class) (higher)AB-GTMH24-230VO3 of 3 models have all five ratings · AHRI 21805965364.8(50 is the typical model of its size class)AEPL**MHV22S2431B1Awith ductless indoor unit AEPL**AWM22E2431B1A1 of 2 models have all five ratings · AHRI 218451561
Non-ducted, 2.5–3 tons78.3(50 is the typical model of its size class)AB-GTMH36-230VO5 of 5 models have all five ratings · AHRI 218059654None on this board (0 of 2 models have all five ratings)
Non-ducted, 3.5–4.5 tons74.4(50 is the typical model of its size class)AB-GTMR42-230VOAlso listed as AB-GTMH42-230VO2 of 2 models have all five ratings · AHRI 218059669No 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
RatingArmbridgeIWAE
COP at 5°Fbeats 83% · 2.05AB-GTMR30-230VONon-ducted, 2.5–3 tonsbeats 71% · 2.10AEPL**MHV22S2431B1ANon-ducted, 2 tons
Capacity retention at 5°Fbeats 98% · 108%AB-GTMH24-230VONon-ducted, 2 tonsbeats 70% · 89%AEPL**MHV23S0932B1ANon-ducted, up to 1.5 tons
HSPF2beats 96% · 11.0AB-GTMH36-230VONon-ducted, 2.5–3 tonsbeats 69% · 10.0AEPL**MHV22S2431B1ANon-ducted, 2 tons
SEER2beats 100% · 22.0AB-GTMR42-230VOAlso listed as AB-GTMH42-230VODucted, 3.5–4.5 tonsbeats 82% · 19.0**AESHV9T3621BADucted, 2.5–3 tons
EER2beats 91% · 12.3AB-GTMR42-230VOAlso listed as AB-GTMH42-230VODucted, 3.5–4.5 tonsbeats 70% · 13.0AEPL**MHV23S1232B1AAlso listed as AEPL**MHV23S1231B1ANon-ducted, up to 1.5 tons
Heating capacity at 5°Fbeats 99% · 21,800 Btu/hAB-GTMH18-230VONon-ducted, up to 1.5 tonsbeats 86% · 15,000 Btu/hAEPL**MHV22S1831B1ANon-ducted, up to 1.5 tons

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