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IWAE heat pump efficiency: 23 outdoor models compared

IWAE has 23 heat pump outdoor models certified with this refrigerant group, in 27 AHRI-certified combinations. Each model is compared with models of the same size and duct type, so the scores below do not depend on which sizes IWAE makes. IWAE has no QMID (IRS Qualified Manufacturer ID) on file, so it is not ranked against other manufacturers.

New to heat pump ratings? The Simple view explains them in plain words →

ManufacturerData as of updated · sources

Outdoor models
23
AHRI certifications
27
Efficiency index
52%
Typical model vs same-size, same-type peers (10 models)
Meet CEE 2025
34.8%
8 models

How IWAE compares with comparable models

For each rating: the share of same-size, same-type models that a typical model of this manufacturer beats (50% is typical), its rank, and the raw median for context. Raw medians are not comparable across manufacturers that make different sizes.
IWAE against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of IWAE’s own modelsIWAE is strongest on capacity retention at 5°F (its typical model beats 61% of comparable models) and weakest on COP at 5°F (26%).
  • IWAE
  • Middle half of its models
  • Other ranked manufacturers
IWAE

Source: AHRI Directory, NEEP · as of

Average peer percentile of IWAE’s models
RatingBeats comparable modelsRankRaw median
Efficiency index10 models scored52%Not ranked—
COP at 5°F10 models scored26%Not ranked1.80
Capacity retention at 5°F10 models scored61%Not ranked80%
HSPF223 models scored35%Not ranked8.0
SEER223 models scored40%Not ranked17.0
EER223 models scored36%Not ranked11.2
Heating capacity at 5°F10 models scored50%Not ranked16,250 Btu/h

Standards met

Share of IWAE’s models with at least one qualifying certification
StandardShareModels
CEE 2025 Tier 1 (Split ASHP)34.8%8
CEE 2026 Tier 1 (Split ASHP)34.8%8
CEE Advanced Tier (Split ASHP)0%0
Xcel Energy Colorado cold-climate ASHP (2025)34.8%8
DOE Cold Climate Heat Pump Challenge0%0
ENERGY STAR Cold Climate26.1%6

Sizes and duct types offered

Models per peer group, and how they score against the other models of that group.
IWAE’s models inside each size and duct typeShape: every model of the group · blue: the middle half of this manufacturer’s models there, median dot, 10th–90th percentile line
  • IWAE (median, middle 50%, 10th–90th)
  • 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 modelsmedian

Source: AHRI Directory · as of

Share of comparable models beaten, per peer group
Size and duct typeModelsIndexCOP@5°FHSPF2SEER2
Ducted, up to 1.5 tons1——14%22%
Ducted, 2 tons237%21%40%35%
Ducted, 2.5–3 tons352%34%42%42%
Ducted, 3.5–4.5 tons541%21%41%43%
Non-ducted, up to 1.5 tons858%19%39%50%
Non-ducted, 2 tons265%71%35%43%
Non-ducted, 2.5–3 tons2——2%5%

Every IWAE model in the market

IWAE’s 23 models with a known size and duct type, over the shape of the whole catalog.
IWAE models by size and ratingColoured: IWAE · grey shapes: all 14,508 models · lines: catalog medians by size
  • IWAE models
  • Ducted median by size
  • Non-ducted median by size
  • Every model at each size (width = count)
  • Standard threshold

Dots: 23 iwae models, each through its representative certification, in the colour of the rating shown. The grey shapes count all 14,508 models, half a ton at a time.
Show the data as a table
COP at 5°F by size and duct type (every model, by rated cooling capacity)
Duct type, sizeModels10th pct.25thMedian75th90th
Ducted, 0.5 tons8261.641.711.751.852.24
Ducted, 1 ton4071.801.902.052.412.45
Ducted, 1.5 tons9921.751.862.002.172.40
Ducted, 2 tons9991.751.862.002.182.30
Ducted, 2.5 tons1,0401.701.802.002.102.36
Ducted, 3 tons6961.801.902.002.102.42
Ducted, 3.5 tons8641.701.802.002.102.46
Ducted, 4 tons7271.801.862.002.122.40
Ducted, 4.5 tons6901.701.801.902.102.20
Ducted, 5 tons861.892.002.102.102.10
Non-ducted, 0.5 tons1,1861.751.801.902.002.22
Non-ducted, 1 ton1,3431.801.801.992.102.21
Non-ducted, 1.5 tons1,2611.801.802.002.102.31
Non-ducted, 2 tons7611.801.982.002.102.30
Non-ducted, 2.5 tons4031.801.852.002.002.10
Non-ducted, 3 tons4731.901.982.002.032.20
Non-ducted, 3.5 tons2802.002.002.002.052.10
Non-ducted, 4 tons2041.962.002.052.102.11
Non-ducted, 4.5 tons781.901.911.952.012.01
Non-ducted, 5 tons841.992.002.052.202.20

Source: AHRI Directory · as of

Top IWAE models

Its top five cold-climate picks and its top five all-around models across sizes (both scores compare each model with models of its own size and duct type, so sizes compare), then, on each single rating, the model that beats the largest share of comparable models.

Cold-climate picks

Top 5 IWAE cold-climate picks across sizes. 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.
# · Outdoor modelSize · typeCap. 5/47COP@5°FHSPF2Btu/h @5°FSEER2MeetsCombosAHRI ref.Compared withScore
1AEPL**MHV22S2431B1AIWAE · TruInverterwith ductless indoor unit AEPL**AWM22E2431B1A2 tons23,000 Btu/h · Non-ducted73%2.1010.017,50023.0CEE 25CEE 26XcelES CC1218451561Non-ducted, 2 tons61.6
2**AESHV9T3621BAIWAEwith ducted air handler **AEAMPVT36D21BA3 tons34,000 Btu/h · Ducted76%1.909.026,00019.0CEE 25CEE 26Xcel1217732896Ducted, 2.5–3 tons55.4
3AEPL**MHV23S0932B1AIWAE · TruInverterwith ductless indoor unit AEPL**AWM23E0932B1A1 ton9,000 Btu/h · Non-ducted89%1.8010.08,00023.0CEE 25CEE 26XcelES CC1218451556Non-ducted, up to 1.5 tons51.8
4AEPL**MHV22S1831B1AIWAE · TruInverterwith ductless indoor unit AEPL**AWM22E1831B1A1.5 tons18,000 Btu/h · Non-ducted83%1.8010.015,00024.0CEE 25CEE 26XcelES CC1218451560Non-ducted, up to 1.5 tons51.0
5AEPL**MHV23S1232B1AIWAE · TruInverterwith ductless indoor unit AEPL**AWM23E1232B1AAlso listed as AEPL**MHV23S1231B1A1 ton12,000 Btu/h · Non-ducted83%1.8010.010,00024.0CEE 25CEE 26XcelES CC1218451557Non-ducted, up to 1.5 tons51.0

All-around best

Top 5 IWAE models on the all-around score across sizes. 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.
# · Outdoor modelSize · typeCap. 5/47COP@5°FHSPF2SEER2EER2MeetsCombosAHRI ref.Compared withScoreHeating halfCooling halfCold-climate score
1AEPL**MHV22S2431B1AIWAE · TruInverterwith ductless indoor unit AEPL**AWM22E2431B1A2 tons23,000 Btu/h · Non-ducted73%2.1010.023.012.0CEE 25CEE 26XcelES CC1218451561Non-ducted, 2 tons64.861.668.061.6
2AEPL**MHV23S1232B1AIWAE · TruInverterwith ductless indoor unit AEPL**AWM23E1232B1AAlso listed as AEPL**MHV23S1231B1A1 ton12,000 Btu/h · Non-ducted83%1.8010.024.013.0CEE 25CEE 26XcelES CC1218451557Non-ducted, up to 1.5 tons63.451.075.851.0
3AEPL**MHV22S1831B1AIWAE · TruInverterwith ductless indoor unit AEPL**AWM22E1831B1A1.5 tons18,000 Btu/h · Non-ducted83%1.8010.024.012.0CEE 25CEE 26XcelES CC1218451560Non-ducted, up to 1.5 tons56.351.061.551.0
4AEPL**MHV23S0932B1AIWAE · TruInverterwith ductless indoor unit AEPL**AWM23E0932B1A1 ton9,000 Btu/h · Non-ducted89%1.8010.023.012.0CEE 25CEE 26XcelES CC1218451556Non-ducted, up to 1.5 tons54.351.856.851.8
5**AESHV9T3621BAIWAEwith ducted air handler **AEAMPVT36D21BA3 tons34,000 Btu/h · Ducted76%1.909.019.010.0CEE 25CEE 26Xcel1217732896Ducted, 2.5–3 tons51.655.447.755.4

Best model on each rating

IWAE’s model with the highest peer percentile on each rating, ranked by that one rating only
RatingModelValueCompared withBeatsAHRI ref.
COP at 5°FAEPL**MHV22S2431B1A2.10Non-ducted, 2 tons71%218451561
Capacity retention at 5°FAEPL**MHV23S0932B1A89%Non-ducted, up to 1.5 tons70%218451556
HSPF2AEPL**MHV22S2431B1A10.0Non-ducted, 2 tons69%218451561
SEER2**AESHV9T3621BA19.0Ducted, 2.5–3 tons82%217732896
EER2AEPL**MHV23S1232B1AAlso listed as AEPL**MHV23S1231B1A13.0Non-ducted, up to 1.5 tons70%218451557
Heating capacity at 5°FAEPL**MHV22S1831B1A15,000 Btu/hNon-ducted, up to 1.5 tons86%218451560

All 23 IWAE models in Explore

IWAE size class by size class: cold-climate and all-around

Its best model on each board in every size and duct type it makes. Both scores are 0–100 against every model of that size class (the line on each bar is 50, the typical model there). Cold-climate picks must keep at least 70% of their heat at 5°F; the all-around score needs all five ratings and has no such bar.
IWAE: best cold-climate pick and best all-around model per size and duct type, with how many of its models are on each board (top 5 and 5 per class are in the snapshot)
Size and duct typeCold-climate pickCold-climate score, best modelAll-around bestAll-around score, best model
Ducted, up to 1.5 tonsNone on this board (0 of 1 models qualify)None on this board (0 of 1 models have all five ratings)
Ducted, 2 tons42.5(50 is the typical model of its size class)**AESHV8T2421BAwith ducted air handler **AEAMPVT24D21BA1 of 2 models qualify · AHRI 21773289537.2(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 tons55.4(50 is the typical model of its size class)**AESHV9T3621BAwith ducted air handler **AEAMPVT36D21BA1 of 3 models qualify · AHRI 21773289651.6(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 tons43.2(50 is the typical model of its size class)**AESHV8T4821BAwith ducted air handler **AEAMPVT48F21BA2 of 5 models qualify · AHRI 21773289743.2(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 tons51.8(50 is the typical model of its size class)AEPL**MHV23S0932B1Awith ductless indoor unit AEPL**AWM23E0932B1A5 of 8 models qualify · AHRI 21845155663.4(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 tons61.6(50 is the typical model of its size class)AEPL**MHV22S2431B1Awith ductless indoor unit AEPL**AWM22E2431B1A1 of 2 models qualify · AHRI 21845156164.8(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 tonsNone on this board (0 of 2 models qualify)None on this board (0 of 2 models have all five ratings)

All-around board, every manufacturer

Newest IWAE certifications

By AHRI reference number; AHRI issues references in increasing order.
The 5 most recently certified IWAE outdoor models
Outdoor modelSize · typeCOP@5°FCap. 5/47HSPF2SEER2MeetsCombosAHRI ref.
AEPL**MHV18S3631S1AIWAEwith ductless indoor unit AEPL**AWM18E3631S1A3 tons33,000 Btu/h · Non-ducted——8.018.0None1218465691
AEPL**MHV17S3031S1AIWAEwith ductless indoor unit AEPL**AWM17E3031S1A2.5 tons28,000 Btu/h · Non-ducted——8.017.0None1218465690
AEPL**MHV17S2431S1AIWAEwith ductless indoor unit AEPL**AWM17E2431S1A2 tons24,000 Btu/h · Non-ducted——8.017.0None1218465689
AEPL**MHV17S1831S1AIWAEwith ductless indoor unit AEPL**AWM17E1831S1A1.5 tons18,000 Btu/h · Non-ducted——8.017.0None1218465688
AEPL**MHV17S1231S1AIWAEwith ductless indoor unit AEPL**AWM17E1231S1A1 ton12,000 Btu/h · Non-ducted——8.017.0None1218465687

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IWAE includes these brand names as listed in AHRI: IWAE. Standards are checked against published thresholds; program rules beyond ratings are not checked.