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.

Carrier and Fujitsu 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, Fujitsu scores higher on 5 of the 6 ratings.

Carrier
Fujitsu
Other ranked manufacturers

Source: AHRI Directory, NEEP · as of Oct 9, 2026

Average peer percentile, raw median and rank among ranked manufacturers
Rating	Carrier	Fujitsu
Efficiency index	48%median — · 23rd ranked	53%median — · 16th ranked
COP at 5°F	56%median 2.04 · 16th ranked	60%median 2.10 · 8th ranked
Capacity retention at 5°F	34%median 53% · 28th ranked	48%median 56% · 19th ranked
HSPF2	40%median 7.8 · 25th ranked	44%median 7.5 · 19th ranked
SEER2	42%median 15.2 · 23rd ranked	43%median 15.2 · 22nd ranked
EER2	59% (higher)median 11.5 · 8th ranked	47% (higher)median 11.0 · 19th ranked
Heating capacity at 5°F	37%median 18,600 Btu/h · 27th ranked	50%median 18,100 Btu/h · 17th ranked
Outdoor models	816	179
AHRI certifications	521,403	2,057

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Carrier	Fujitsu
CEE 2025 Tier 1 (Split ASHP)	40.2%328 models	32.4%58 models
CEE 2026 Tier 1 (Split ASHP)	35.3%288 models	31.3%56 models
CEE Advanced Tier (Split ASHP)	1%8 models	7.8%14 models
Xcel Energy Colorado cold-climate ASHP (2025)	27.2%222 models	29.6%53 models
DOE Cold Climate Heat Pump Challenge	1%8 models	7.8%14 models
ENERGY STAR Cold Climate	26.7%218 models	26.8%48 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 · 10 groups where both have models

Carrier
Fujitsu
All models of the group

Raw ratings are only placed side by side within one size and duct type, where they are comparable.

Source: AHRI Directory · as of Oct 9, 2026

Models per peer group · efficiency index within the group
Size and duct type	Carrier	Fujitsu
Ducted, up to 1.5 tons	69 · index 56%	12 · index 57%
Ducted, 2 tons	93 · index 47%	17 · index 37%
Ducted, 2.5–3 tons	228 · index 45%	44 · index 42%
Ducted, 3.5–4.5 tons	306 · index 44%	56 · index 44%
Ducted, 5 tons and up	68 · index 50%	22 · index 32%
Non-ducted, up to 1.5 tons	54 · index 59%	27 · index 75%
Non-ducted, 2 tons	16 · index 57%	8 · index 74%
Non-ducted, 2.5–3 tons	30 · index 55%	11 · index 68%
Non-ducted, 3.5–4.5 tons	22 · index 47%	8 · index 62%
Non-ducted, 5 tons and up	4 · index 57%	1 · index 78%

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 type	CarrierCold-climate score, best model	FujitsuCold-climate score, best model
Ducted, up to 1.5 tons	93.5(50 is the typical model of its size class) (higher)37MAHAQ06AA3with ducted air handler 45MBDAQ06XA3Also sold as Arcoaire D5CSHAH06AAK30 of 68 models qualify · AHRI 215323798	87.4(50 is the typical model of its size class)AOUH18KUAH1with ducted air handler ARUH18KUAS7 of 12 models qualify · AHRI 218814795
Ducted, 2 tons	85.7(50 is the typical model of its size class) (higher)37MAHAQ24AA3with ducted air handler 45MBDAQ24XH3Also sold as Arcoaire D5CSHAH24AAK44 of 94 models qualify · AHRI 215323817	83.4(50 is the typical model of its size class)AOUH24KUAH1with ducted air handler ARUH24KUAS5 of 17 models qualify · AHRI 218807602
Ducted, 2.5–3 tons	83.2(50 is the typical model of its size class)37MGHAQ36EA3Also sold as Arcoaire D5CMHAH36EAK59 of 229 models qualify · AHRI 215357119	87.0(50 is the typical model of its size class) (higher)AOUH30KUAH1with ducted air handler AMUH30KUAS8 of 44 models qualify · AHRI 217895716
Ducted, 3.5–4.5 tons	89.7(50 is the typical model of its size class) (higher)H5H0V48KAAAwith indoor coil D(A,C,E)61A3J+TDR and furnace 80CSU0802120A63 of 293 models qualify · AHRI 218372714	79.3(50 is the typical model of its size class)AOUH42KUAS1with ducted air handler ARUH42KUAS9 of 56 models qualify · AHRI 215812202
Ducted, 5 tons and up	94.7(50 is the typical model of its size class) (higher)MCY-MUB0608HS2P-UL19 of 80 models qualify · AHRI 216763249	71.9(50 is the typical model of its size class)AOUK060MSAN71 of 22 models qualify · AHRI 218467769
Non-ducted, up to 1.5 tons	96.8(50 is the typical model of its size class)D5CPRAH18AAwith ductless indoor unit D5FPHAH18XAK35 of 54 models qualify · AHRI 215413214	98.5(50 is the typical model of its size class) (higher)AOUH09KTAP1with ductless indoor unit ASUH09KTAS25 of 27 models qualify · AHRI 216018255
Non-ducted, 2 tons	89.4(50 is the typical model of its size class)37MAHAQ24AA3with ductless indoor unit 45MBCAQ24XA3Also sold as Arcoaire D5CSHAH24AAK15 of 16 models qualify · AHRI 215323815	93.1(50 is the typical model of its size class) (higher)AOUK024SSAN77 of 8 models qualify · AHRI 216372779
Non-ducted, 2.5–3 tons	89.4(50 is the typical model of its size class)37MBHAQ36AA3with ductless indoor unit 45MCFAQ36XA3Also sold as Arcoaire D5CLHAH36AAK21 of 30 models qualify · AHRI 215323843	94.6(50 is the typical model of its size class) (higher)AOUH30KUAH1with ductless indoor unit AUUH30KUAS9 of 11 models qualify · AHRI 217895708
Non-ducted, 3.5–4.5 tons	79.4(50 is the typical model of its size class) (higher)RAV-BP421AT2P-ULwith ductless indoor unit RAV-HB421CTP-UL18 of 22 models qualify · AHRI 216415472	76.7(50 is the typical model of its size class)AOUH42KUAH1with ductless indoor unit AUUH42KUAS7 of 8 models qualify · AHRI 217895710
Non-ducted, 5 tons and up	50.6(50 is the typical model of its size class)37VMB060HDS3-11 of 4 models qualify · AHRI 216369714	70.6(50 is the typical model of its size class) (higher)AOUK060MSAN71 of 1 models qualify · AHRI 218466063

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 type	CarrierAll-around score, best model	FujitsuAll-around score, best model
Ducted, up to 1.5 tons	95.6(50 is the typical model of its size class) (higher)37MAHAQ06AA3with ducted air handler 45MBDAQ06XA3Also sold as Arcoaire D5CSHAH06AAK64 of 68 models have all five ratings · AHRI 215323798	90.0(50 is the typical model of its size class)AOUH12KUBS1with ducted air handler ADUH12KUBS12 of 12 models have all five ratings · AHRI 218814799
Ducted, 2 tons	82.9(50 is the typical model of its size class)27VNA324A030with ducted air handler FE5BN(B,X)C36L+UIAlso sold as Bryant Heating and Cooling Systems 293VAN024AA, HEIL B5H3V24K*AAA90 of 90 models have all five ratings · AHRI 217624252	85.7(50 is the typical model of its size class) (higher)AOUH24KWAH317 of 17 models have all five ratings · AHRI 215447694
Ducted, 2.5–3 tons	88.0(50 is the typical model of its size class) (higher)RAV-BP301AT2P-ULwith ducted air handler RAV-HB301BTP-UL209 of 230 models have all five ratings · AHRI 216415477	86.1(50 is the typical model of its size class)AOUH30KUAH1with ducted air handler AMUH30KUAS28 of 44 models have all five ratings · AHRI 217895716
Ducted, 3.5–4.5 tons	90.4(50 is the typical model of its size class) (higher)27VNA154A030with ducted air handler FE5BNBD60L+UIAlso sold as Bryant Heating and Cooling Systems 291VAN054*AA241 of 275 models have all five ratings · AHRI 215587917	85.4(50 is the typical model of its size class)AOUH42KUAH1with ducted air handler ARUH42KUAS28 of 52 models have all five ratings · AHRI 217895714
Ducted, 5 tons and up	89.1(50 is the typical model of its size class) (higher)27VNA360A030with ducted air handler FE5BNBD60L+UIAlso sold as Bryant Heating and Cooling Systems 293VAN060AA, HEIL B5H3V60K*AAA81 of 101 models have all five ratings · AHRI 215931484	56.6(50 is the typical model of its size class)WP15AY60AJ2Nwith ducted air handler FHRNTT6024S*YTNAAlso listed as FOP1560TJAYNA14 of 26 models have all five ratings · AHRI 215415496
Non-ducted, up to 1.5 tons	96.5(50 is the typical model of its size class)37MAHAQ06AA3with ductless indoor unit 45MAHAQ06XA3Also sold as Arcoaire D5CSHAH06AAK51 of 54 models have all five ratings · AHRI 215323742	99.1(50 is the typical model of its size class) (higher)AOUH09KTAP1with ductless indoor unit ASUH09KTAS27 of 27 models have all five ratings · AHRI 216018255
Non-ducted, 2 tons	88.5(50 is the typical model of its size class) (higher)37MARAQ24AA3with ductless indoor unit 45MAHAQ24XA3Also sold as Arcoaire D5CSRAH24AAK15 of 16 models have all five ratings · AHRI 215323752	88.0(50 is the typical model of its size class)AOUK024SSAN78 of 8 models have all five ratings · AHRI 216372779
Non-ducted, 2.5–3 tons	91.0(50 is the typical model of its size class) (higher)RAV-BP301AT2P-ULwith ductless indoor unit RAV-HB301UTP-UL29 of 30 models have all five ratings · AHRI 216415465	90.0(50 is the typical model of its size class)AOUH30KUAH1with ductless indoor unit AUUH30KUAS10 of 11 models have all five ratings · AHRI 217895708
Non-ducted, 3.5–4.5 tons	84.9(50 is the typical model of its size class) (higher)MCY-MUB0488HS2P-UL20 of 22 models have all five ratings · AHRI 216760288	80.2(50 is the typical model of its size class)AOUH42KUAH1with ductless indoor unit AUUH42KUAS7 of 8 models have all five ratings · AHRI 217895710
Non-ducted, 5 tons and up	69.0(50 is the typical model of its size class)MCY-MUB0608HS2P-UL4 of 4 models have all five ratings · AHRI 216763251	77.9(50 is the typical model of its size class) (higher)AOUK060MSAN71 of 1 models have all five ratings · AHRI 218466063

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
Rating	Carrier	Fujitsu
COP at 5°F	beats 100% · 2.50MCY-MUB0488HS2P-ULNon-ducted, 3.5–4.5 tons	beats 100% · 3.03AOUK024SSAN7Non-ducted, 2 tons
Capacity retention at 5°F	beats 100% · 150%37MPRAQ06AA3Non-ducted, up to 1.5 tons	beats 100% · 102%AOUH42KUAH1Non-ducted, 3.5–4.5 tons
HSPF2	beats 100% · 15.637MPRAQ06AA3Non-ducted, up to 1.5 tons	beats 98% · 14.0AOUH09KTAP1Non-ducted, up to 1.5 tons
SEER2	beats 100% · 35.137MPRAQ06AA3Non-ducted, up to 1.5 tons	beats 100% · 33.5AOUH09KTAP1Non-ducted, up to 1.5 tons
EER2	beats 100% · 17.2MCY-MUB0368HS2P-ULNon-ducted, 2.5–3 tons	beats 100% · 19.1AOUH09KTAP1Non-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 100% · 61,000 Btu/hH5H0V60KAAA*Ducted, 3.5–4.5 tons	beats 100% · 25,400 Btu/hAOUH18KZAH1Non-ducted, up to 1.5 tons

More comparisons

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Carrier vs Fujitsu heat pumps