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Star Air Kontrol vs YONAN heat pumps

Measured against models of the same size and duct type, YONAN scores higher on 3 of the 6 ratings. Star Air Kontrol has 55 outdoor models, YONAN has 55 outdoor models. Star Air Kontrol and YONAN have no QMID on file and are not ranked. They share hardware: 16 equipment families appear under both names.

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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.
Star Air Kontrol and YONAN 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, YONAN scores higher on 3 of the 6 ratings.
  • Star Air Kontrol
  • YONAN
  • Other ranked manufacturers
Star Air…YONAN

Source: AHRI Directory, NEEP · as of

Average peer percentile, raw median and rank among ranked manufacturers
RatingStar Air KontrolYONAN
Efficiency index51%median —55%median —
COP at 5°F56% (higher)median 1.9954% (higher)median 2.00
Capacity retention at 5°F35%median 66%36%median 66%
HSPF261%median 9.261%median 9.5
SEER257%median 19.261%median 21.1
EER241%median 10.651%median 12.2
Heating capacity at 5°F44% (higher)median 17,700 Btu/h39% (higher)median 12,600 Btu/h
Outdoor models5555
AHRI certifications7088

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
StandardStar Air KontrolYONAN
CEE 2025 Tier 1 (Split ASHP)50.9%28 models67.3%37 models
CEE 2026 Tier 1 (Split ASHP)43.6%24 models58.2%32 models
CEE Advanced Tier (Split ASHP)0%0 models0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)23.6%13 models34.5%19 models
DOE Cold Climate Heat Pump Challenge0%0 models0%0 models
ENERGY STAR Cold Climate20%11 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 · 9 groups where both have models
  • Star Air Kontrol
  • YONAN
  • 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 modelsDucted, 5 tons and up1.90239 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 typeStar Air KontrolYONAN
Ducted, up to 1.5 tons4 · index 58%5 · index 67%
Ducted, 2 tons3 · index 68%2 · index 79%
Ducted, 2.5–3 tons6 · index 53%5 · index 59%
Ducted, 3.5–4.5 tons7 · index 53%4 · index 56%
Ducted, 5 tons and up3 · index 51%1 · index 57%
Non-ducted, up to 1.5 tons18 · index 53%30 · index 56%
Non-ducted, 2 tons6 · index 51%8 · index 51%
Non-ducted, 2.5–3 tons7 · index 41%11 · index 47%
Non-ducted, 3.5–4.5 tons6 · index 41%6 · index 43%

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 typeStar Air KontrolCold-climate score, best modelYONANCold-climate score, best model
Ducted, up to 1.5 tons67.8(50 is the typical model of its size class)SAK-12-DTMS/220Vwith ducted air handler SAK-12-DTMS/220V2 of 4 models qualify · AHRI 21308146370.4(50 is the typical model of its size class) (higher)YOX-09HFN1with ducted air handler YTI-09HWFN14 of 5 models qualify · AHRI 208106973
Ducted, 2 tons80.3(50 is the typical model of its size class)SAK-24-DTMS/220Vwith ducted air handler SAK-24-DTMS/220V2 of 3 models qualify · AHRI 21172652280.3(50 is the typical model of its size class)YOD-24HFN1with ducted air handler YTI-24HWFN12 of 2 models qualify · AHRI 208106980
Ducted, 2.5–3 tons57.4(50 is the typical model of its size class)SAK-27-22MUZ/220(OUT)*1 of 6 models qualify · AHRI 21172666957.8(50 is the typical model of its size class) (higher)YSMO-30HRN12 of 5 models qualify · AHRI 207691834
Ducted, 3.5–4.5 tonsNone on this board (0 of 7 models qualify)None on this board (0 of 4 models qualify)
Ducted, 5 tons and upNone on this board (0 of 3 models qualify)None on this board (0 of 1 models qualify)
Non-ducted, up to 1.5 tons84.7(50 is the typical model of its size class)SAK-09-OC/220Vwith ductless indoor unit SAK-09-OC/220V4 of 18 models qualify · AHRI 21327989786.0(50 is the typical model of its size class) (higher)YSA25-09HRN1with ductless indoor unit YSA25-09HRN1Also listed as YS-09HRFN1-C5OU9 of 30 models qualify · AHRI 207671408
Non-ducted, 2 tons74.2(50 is the typical model of its size class)SAK-24CONS/220Vwith ductless indoor unit SAK-24CONS/220V3 of 6 models qualify · AHRI 21327988774.2(50 is the typical model of its size class)YOD-24HFN1with ductless indoor unit YUE-24HRFN14 of 8 models qualify · AHRI 208106981
Non-ducted, 2.5–3 tons49.3(50 is the typical model of its size class)SAK-27-22MUZ/220(OUT)*1 of 7 models qualify · AHRI 21172666850.1(50 is the typical model of its size class) (higher)YSMO-30HRN12 of 11 models qualify · AHRI 207691833
Non-ducted, 3.5–4.5 tons56.3(50 is the typical model of its size class)SAK-48CONS/220Vwith ductless indoor unit SAK-48CONS/220V1 of 6 models qualify · AHRI 21327988956.3(50 is the typical model of its size class)YOE-48HFN1with ductless indoor unit YUE-48HRFN11 of 6 models qualify · AHRI 208106987

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 typeStar Air KontrolAll-around score, best modelYONANAll-around score, best model
Ducted, up to 1.5 tons78.5(50 is the typical model of its size class)SAK-18-DTMS/220Vwith ducted air handler SAK-18-DTMS/220V4 of 4 models have all five ratings · AHRI 21172652178.5(50 is the typical model of its size class)YOX-18HFN1with ducted air handler YTI-18HWFN15 of 5 models have all five ratings · AHRI 208106977
Ducted, 2 tons83.8(50 is the typical model of its size class)SAK-24-DTMS/220Vwith ducted air handler SAK-24-DTMS/220V2 of 3 models have all five ratings · AHRI 21172652283.8(50 is the typical model of its size class)YOD-24HFN1with ducted air handler YTI-24HWFN12 of 2 models have all five ratings · AHRI 208106980
Ducted, 2.5–3 tons71.5(50 is the typical model of its size class)SAK-27-22MUZ/220(OUT)*4 of 6 models have all five ratings · AHRI 21172666971.7(50 is the typical model of its size class) (higher)YSMO-30HRN15 of 5 models have all five ratings · AHRI 207691834
Ducted, 3.5–4.5 tons63.5(50 is the typical model of its size class)SAK-48-21MUZ/220(OUT)*4 of 7 models have all five ratings · AHRI 21172667363.5(50 is the typical model of its size class)YSMO-48HRN1Also listed as YSMO-48HFN14 of 4 models have all five ratings · AHRI 207691831
Ducted, 5 tons and up57.1(50 is the typical model of its size class)SAK-60-DTMS/220V*with ducted air handler SAK-60-DTMS/220V3 of 3 models have all five ratings · AHRI 21172667457.1(50 is the typical model of its size class)YOE-60HFN1with ducted air handler YHG-60HWFN11 of 1 models have all five ratings · AHRI 208106988
Non-ducted, up to 1.5 tons77.2(50 is the typical model of its size class)SAK-09-OC/220Vwith ductless indoor unit SAK-09-OC/220V18 of 18 models have all five ratings · AHRI 21327989788.4(50 is the typical model of its size class) (higher)YSA25-09HRN1with ductless indoor unit YSA25-09HRN1Also listed as YS-09HRFN1-C5OU30 of 30 models have all five ratings · AHRI 207671408
Non-ducted, 2 tons72.0(50 is the typical model of its size class)SAK-24CONS/220Vwith ductless indoor unit SAK-24CONS/220V6 of 6 models have all five ratings · AHRI 21327988777.5(50 is the typical model of its size class) (higher)YSA25-24HRN1with ductless indoor unit YSA25-24HRN1Also listed as YS-24HRFN1-C5OU8 of 8 models have all five ratings · AHRI 207671411
Non-ducted, 2.5–3 tons66.7(50 is the typical model of its size class)SAK-27-22MUZ/220(OUT)*6 of 7 models have all five ratings · AHRI 21172666867.1(50 is the typical model of its size class) (higher)YSMO-30HRN18 of 11 models have all five ratings · AHRI 207691833
Non-ducted, 3.5–4.5 tons48.3(50 is the typical model of its size class)SAK-48-21MUZ/220(OUT)*6 of 6 models have all five ratings · AHRI 21172667248.3(50 is the typical model of its size class)YSMO-48HRN1Also listed as YSMO-48HFN15 of 6 models have all five ratings · AHRI 207691830

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
RatingStar Air KontrolYONAN
COP at 5°Fbeats 96% · 2.38SAK-18-24MS/220Non-ducted, up to 1.5 tonsbeats 97% · 2.39YSA25-12HRN1Also listed as YS-12HRFN1-C5OUNon-ducted, up to 1.5 tons
Capacity retention at 5°Fbeats 73% · 59%SAK-60-DTMS/220VDucted, 5 tons and upbeats 96% · 114%YS-09HRFN1-E0OUNon-ducted, up to 1.5 tons
HSPF2beats 98% · 11.2SAK-24-DTMS/220VDucted, 2 tonsbeats 98% · 11.2YOD-24HFN1Ducted, 2 tons
SEER2beats 98% · 21.0SAK-27-22MUZ/220(OUT)*Ducted, 2.5–3 tonsbeats 99% · 28.5YS-09HRFN1-E0OUNon-ducted, up to 1.5 tons
EER2beats 85% · 12.5SAK-24-DTMS/220VDucted, 2 tonsbeats 97% · 14.0YSA25-24HRN1Also listed as YS-24HRFN1-C5OUNon-ducted, 2 tons
Heating capacity at 5°Fbeats 79% · 13,100 Btu/hSAK-18-OC/220VNon-ducted, up to 1.5 tonsbeats 82% · 13,700 Btu/hYS-09HRFN1-E0OUNon-ducted, up to 1.5 tons

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