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DIYCOOL vs VillaTherm heat pumps

Measured against models of the same size and duct type, VillaTherm scores higher on 5 of the 6 ratings. DIYCOOL has 24 outdoor models, VillaTherm has 24 outdoor models. DIYCOOL and VillaTherm 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.
DIYCOOL and VillaTherm 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, VillaTherm scores higher on 5 of the 6 ratings.
  • DIYCOOL
  • VillaTherm
  • Other ranked manufacturers
DIYCOOLVillaThe…

Source: AHRI Directory, NEEP · as of

Average peer percentile, raw median and rank among ranked manufacturers
RatingDIYCOOLVillaTherm
Efficiency index54%median —66%median —
COP at 5°F53%median 2.0080%median 2.20
Capacity retention at 5°F51%median 74%63%median 74%
HSPF263%median 9.676%median 9.5
SEER260%median 18.771%median 18.0
EER247% (higher)median 11.545% (higher)median 11.0
Heating capacity at 5°F60%median 23,500 Btu/h63%median 30,500 Btu/h
Outdoor models2424
AHRI certifications3040

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
StandardDIYCOOLVillaTherm
CEE 2025 Tier 1 (Split ASHP)79.2%19 models91.7%22 models
CEE 2026 Tier 1 (Split ASHP)79.2%19 models91.7%22 models
CEE Advanced Tier (Split ASHP)4.2%1 models16.7%4 models
Xcel Energy Colorado cold-climate ASHP (2025)70.8%17 models91.7%22 models
DOE Cold Climate Heat Pump Challenge4.2%1 models16.7%4 models
ENERGY STAR Cold Climate75%18 models83.3%20 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
  • DIYCOOL
  • VillaTherm
  • All models of the group
Ducted, 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 typeDIYCOOLVillaTherm
Ducted, 2 tons4 · index 64%6 · index 77%
Ducted, 2.5–3 tons4 · index 62%6 · index 63%
Ducted, 3.5–4.5 tons7 · index 61%12 · index 61%
Non-ducted, up to 1.5 tons6 · index 48%None
Non-ducted, 2 tons3 · index 44%None
Non-ducted, 2.5–3 tons2 · index 32%None
Non-ducted, 3.5–4.5 tons1 · index 53%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 typeDIYCOOLCold-climate score, best modelVillaThermCold-climate score, best model
Ducted, 2 tons76.2(50 is the typical model of its size class)ACIQ-24-HP32with ducted air handler ACIQ-24-AH324 of 4 models qualify · AHRI 21538724289.5(50 is the typical model of its size class) (higher)VHP-UCHA-24HDCT-Awith ducted air handler VAH-UCHA-24SHDCALN26 of 6 models qualify · AHRI 218696917
Ducted, 2.5–3 tons76.9(50 is the typical model of its size class)ACIQ-36-HP32with ducted air handler ACIQ-36-AH324 of 4 models qualify · AHRI 21538724378.1(50 is the typical model of its size class) (higher)VHP-UCHA-36HDCT-Awith ducted air handler VAH-UCHA-36SHDCALN26 of 6 models qualify · AHRI 218696918
Ducted, 3.5–4.5 tons85.1(50 is the typical model of its size class) (higher)ACIQ-60-HP32with ducted air handler ACIQ-60-AH327 of 7 models qualify · AHRI 21538724579.5(50 is the typical model of its size class)VHP-UCHA-48HDCT-Awith ducted air handler VAH-UCHA-48SHDCALN212 of 12 models qualify · AHRI 218696920
Non-ducted, up to 1.5 tons73.1(50 is the typical model of its size class)EZ-18ZPL-HP230Bwith ductless indoor unit EZ-18W-MB3 of 6 models qualify · AHRI 216980898No models in this size class
Non-ducted, 2 tons42.8(50 is the typical model of its size class)EZ-27Z-M3B1 of 3 models qualify · AHRI 216980922No models in this size class
Non-ducted, 2.5–3 tons41.3(50 is the typical model of its size class)EZ-36Z-M4B1 of 2 models qualify · AHRI 216980923No models in this size class
Non-ducted, 3.5–4.5 tons45.0(50 is the typical model of its size class)EZ-48Z-M5B1 of 1 models qualify · AHRI 216980928No 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 typeDIYCOOLAll-around score, best modelVillaThermAll-around score, best model
Ducted, 2 tons73.1(50 is the typical model of its size class)ACIQ-24-HP32with ducted air handler ACIQ-24-AH324 of 4 models have all five ratings · AHRI 21538724285.0(50 is the typical model of its size class) (higher)VHP-UCHA-24HDCT-Awith ducted air handler VAH-UCHA-24SHDCALN26 of 6 models have all five ratings · AHRI 218696917
Ducted, 2.5–3 tons69.4(50 is the typical model of its size class) (higher)ACIQ-36-HP32with ducted air handler ACIQ-36-AH324 of 4 models have all five ratings · AHRI 21538724365.1(50 is the typical model of its size class)VHP-UCHA-36HDCTwith ducted air handler VAH-UCHA-36HDCAlso listed as VHP-UCA-36HDC-A, VHP-UCHA-36HDCT-A6 of 6 models have all five ratings · AHRI 217155422
Ducted, 3.5–4.5 tons83.1(50 is the typical model of its size class) (higher)ACIQ-48-HP32with ducted air handler ACIQ-48-AH327 of 7 models have all five ratings · AHRI 21538724468.3(50 is the typical model of its size class)VHP-UCHA-48HDCTwith ducted air handler VAH-UCHA-48HDCAlso listed as VHP-UCA-48HDC-A, VHP-UCHA-48HDCT-A12 of 12 models have all five ratings · AHRI 217155425
Non-ducted, up to 1.5 tons73.3(50 is the typical model of its size class)EZ-18ZPL-HP230Bwith ductless indoor unit EZ-18W-MB6 of 6 models have all five ratings · AHRI 216980898No models in this size class
Non-ducted, 2 tons56.2(50 is the typical model of its size class)EZ-24ZPL-HP230Bwith ductless indoor unit EZ-24W-MB3 of 3 models have all five ratings · AHRI 216980899No models in this size class
Non-ducted, 2.5–3 tons53.2(50 is the typical model of its size class)EZ-36Z-M4B2 of 2 models have all five ratings · AHRI 216980923No models in this size class
Non-ducted, 3.5–4.5 tons52.8(50 is the typical model of its size class)EZ-48Z-M5B1 of 1 models have all five ratings · AHRI 216980926No 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
RatingDIYCOOLVillaTherm
COP at 5°Fbeats 98% · 2.44EZ-18ZPL-HP230BNon-ducted, up to 1.5 tonsbeats 89% · 2.30VHP-UCHA-36HDCT-ADucted, 2.5–3 tons
Capacity retention at 5°Fbeats 94% · 100%ACIQ-48-HP32Ducted, 3.5–4.5 tonsbeats 92% · 100%VHP-UCHA-24HDCSN4Also listed as VHPSD-UCHA-24HDCSN4, VHPSD-UCHA-24HDCSNDucted, 2 tons
HSPF2beats 91% · 10.3EZ-36-HPBDucted, 2.5–3 tonsbeats 90% · 10.5VHP-UCHA-48HDCT-ADucted, 3.5–4.5 tons
SEER2beats 91% · 20.0EZ-48Z-M5BDucted, 3.5–4.5 tonsbeats 87% · 20.0VHP-UCHA-24HDCTAlso listed as VHP-UCA-24HDC-A, VHP-UCHA-24HDCT-ADucted, 2 tons
EER2beats 83% · 12.0ACIQ-48-HP32Ducted, 3.5–4.5 tonsbeats 98% · 14.0VHP-UCHA-24HDCTAlso listed as VHP-UCA-24HDC-A, VHP-UCHA-24HDCT-ADucted, 2 tons
Heating capacity at 5°Fbeats 98% · 54,000 Btu/hACIQ-60-HP32Ducted, 3.5–4.5 tonsbeats 89% · 24,000 Btu/hVHP-UCHA-24HDCSN4Also listed as VHPSD-UCHA-24HDCSN4, VHPSD-UCHA-24HDCSNDucted, 2 tons

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