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AZUR vs WINDAIR heat pumps

Measured against models of the same size and duct type, AZUR scores higher on 5 of the 6 ratings. AZUR has 13 outdoor models, WINDAIR has 13 outdoor models. AZUR and WINDAIR 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.
AZUR and WINDAIR 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, AZUR scores higher on 5 of the 6 ratings.
  • AZUR
  • WINDAIR
  • Other ranked manufacturers
AZURWINDAIR

Source: AHRI Directory, NEEP · as of

Average peer percentile, raw median and rank among ranked manufacturers
RatingAZURWINDAIR
Efficiency index56%median —65%median —
COP at 5°F44% (higher)median 1.8636% (higher)median 1.80
Capacity retention at 5°F69% (higher)median 77%44% (higher)median 70%
HSPF239% (higher)median 8.627% (higher)median 8.5
SEER249% (higher)median 18.037% (higher)median 18.5
EER241%median 10.550%median 11.1
Heating capacity at 5°F65% (higher)median 26,000 Btu/h40% (higher)median 8,400 Btu/h
Outdoor models1313
AHRI certifications1613

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
StandardAZURWINDAIR
CEE 2025 Tier 1 (Split ASHP)61.5%8 models23.1%3 models
CEE 2026 Tier 1 (Split ASHP)61.5%8 models23.1%3 models
CEE Advanced Tier (Split ASHP)0%0 models0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)61.5%8 models15.4%2 models
DOE Cold Climate Heat Pump Challenge0%0 models0%0 models
ENERGY STAR Cold Climate38.5%5 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
  • AZUR
  • WINDAIR
  • All models of the group
Ducted, 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 typeAZURWINDAIR
Ducted, 2 tons1 · index 46%None
Ducted, 2.5–3 tons1 · index 63%None
Ducted, 3.5–4.5 tons2 · index 51%None
Non-ducted, up to 1.5 tons5 · index 57%10 · index 65%
Non-ducted, 2 tons2 · index 68%2 · index —
Non-ducted, 2.5–3 tons1 · index 70%1 · index —
Non-ducted, 3.5–4.5 tons1 · index 45%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 typeAZURCold-climate score, best modelWINDAIRCold-climate score, best model
Ducted, 2 tons57.5(50 is the typical model of its size class)AZ-24HPBwith ducted air handler AH-24B1 of 1 models qualify · AHRI 207036527No models in this size class
Ducted, 2.5–3 tons75.1(50 is the typical model of its size class)AZ-36HPBwith ducted air handler AH-36B1 of 1 models qualify · AHRI 207036530No models in this size class
Ducted, 3.5–4.5 tons56.6(50 is the typical model of its size class)AZ-48HPBwith ducted air handler AH-48B1 of 2 models qualify · AHRI 207036533No models in this size class
Non-ducted, up to 1.5 tons54.9(50 is the typical model of its size class)AZ-12CA22EXTwith ductless indoor unit AZ-12CA22INT2 of 5 models qualify · AHRI 20541784575.0(50 is the typical model of its size class) (higher)DWH09UW3SXETE00/Owith ductless indoor unit DWH09UW3SXETE00/I2 of 10 models qualify · AHRI 202021941
Non-ducted, 2 tons56.8(50 is the typical model of its size class)AZ-24M322SCO1 of 2 models qualify · AHRI 206346136None on this board (0 of 2 models qualify)
Non-ducted, 2.5–3 tons64.0(50 is the typical model of its size class)AZ-36M422SCO1 of 1 models qualify · AHRI 206347268None on this board (0 of 1 models qualify)
Non-ducted, 3.5–4.5 tons41.9(50 is the typical model of its size class)AZ-42M522SCO1 of 1 models qualify · AHRI 206346141No 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 typeAZURAll-around score, best modelWINDAIRAll-around score, best model
Ducted, 2 tons46.3(50 is the typical model of its size class)AZ-24HPBwith ducted air handler AH-24B1 of 1 models have all five ratings · AHRI 207036527No models in this size class
Ducted, 2.5–3 tons63.2(50 is the typical model of its size class)AZ-36HPBwith ducted air handler AH-36B1 of 1 models have all five ratings · AHRI 207036530No models in this size class
Ducted, 3.5–4.5 tons57.3(50 is the typical model of its size class)AZ-48HPBwith ducted air handler AH-48B2 of 2 models have all five ratings · AHRI 207036533No models in this size class
Non-ducted, up to 1.5 tons56.8(50 is the typical model of its size class)AZ-12CA22EXTwith ductless indoor unit AZ-12CA22INT2 of 5 models have all five ratings · AHRI 20541784585.1(50 is the typical model of its size class) (higher)DWH09UW3SXETE00/Owith ductless indoor unit DWH09UW3SXETE00/I3 of 10 models have all five ratings · AHRI 202021941
Non-ducted, 2 tons67.5(50 is the typical model of its size class)AZ-24M322SCO1 of 2 models have all five ratings · AHRI 206346136None on this board (0 of 2 models have all five ratings)
Non-ducted, 2.5–3 tons69.5(50 is the typical model of its size class)AZ-36M422SCO1 of 1 models have all five ratings · AHRI 206347268None on this board (0 of 1 models have all five ratings)
Non-ducted, 3.5–4.5 tons44.5(50 is the typical model of its size class)AZ-42M522SCO1 of 1 models have all five ratings · AHRI 206346140No 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
RatingAZURWINDAIR
COP at 5°Fbeats 75% · 2.05AZ-36HPBDucted, 2.5–3 tonsbeats 78% · 2.10DWH09UW3SXETE00/ONon-ducted, up to 1.5 tons
Capacity retention at 5°Fbeats 99% · 113%AZ-36M422SCONon-ducted, 2.5–3 tonsbeats 65% · 78%DWH09UW3SXETE00/ONon-ducted, up to 1.5 tons
HSPF2beats 83% · 9.5AZ-36HPBDucted, 2.5–3 tonsbeats 79% · 10.5DWH09UW3SXETE00/ONon-ducted, up to 1.5 tons
SEER2beats 85% · 22.0AZ-24M322SCONon-ducted, 2 tonsbeats 96% · 27.5DWH09UW3SXETE00/ONon-ducted, up to 1.5 tons
EER2beats 84% · 12.5AZ-36M422SCONon-ducted, 2.5–3 tonsbeats 93% · 15.5DWH09UW3SXETE00/ONon-ducted, up to 1.5 tons
Heating capacity at 5°Fbeats 89% · 36,000 Btu/hAZ-36M422SCONon-ducted, 2.5–3 tonsbeats 66% · 11,900 Btu/hDWH18UR3SBBTE/ONon-ducted, up to 1.5 tons

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