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.

AUX and TCL 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, TCL scores higher on 5 of the 6 ratings.

AUX
TCL
Other ranked manufacturers

Source: AHRI Directory, NEEP · as of Oct 25, 2026

Average peer percentile, raw median and rank among ranked manufacturers
Rating	AUX	TCL
Efficiency index	49%median — · 21st ranked	50%median —
COP at 5°F	60% (higher)median 2.00 · 7th ranked	36% (higher)median 1.89
Capacity retention at 5°F	51%median 75% · 15th ranked	52%median 75%
HSPF2	40%median 9.0 · 25th ranked	53%median 9.5
SEER2	48%median 20.0 · 18th ranked	59%median 20.0
EER2	39%median 11.0 · 27th ranked	41%median 11.2
Heating capacity at 5°F	49%median 9,600 Btu/h · 17th ranked	52%median 17,000 Btu/h
Outdoor models	189	192
AHRI certifications	223	701

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	AUX	TCL
CEE 2025 Tier 1 (Split ASHP)	68.3%129 models	75%144 models
CEE 2026 Tier 1 (Split ASHP)	66.1%125 models	75%144 models
CEE Advanced Tier (Split ASHP)	1.1%2 models	0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)	65.6%124 models	71.9%138 models
DOE Cold Climate Heat Pump Challenge	1.1%2 models	0%0 models
ENERGY STAR Cold Climate	34.9%66 models	62.5%120 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 · 8 groups where both have models

AUX
TCL
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 25, 2026

Models per peer group · efficiency index within the group
Size and duct type	AUX	TCL
Ducted, up to 1.5 tons	6 · index 60%	11 · index 60%
Ducted, 2 tons	4 · index 59%	12 · index 49%
Ducted, 2.5–3 tons	9 · index 63%	21 · index 58%
Ducted, 3.5–4.5 tons	5 · index 61%	22 · index 50%
Non-ducted, up to 1.5 tons	120 · index 46%	95 · index 49%
Non-ducted, 2 tons	33 · index 52%	20 · index 42%
Non-ducted, 2.5–3 tons	22 · index 46%	29 · index 47%
Non-ducted, 3.5–4.5 tons	2 · index 73%	12 · index 46%

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	AUXCold-climate score, best model	TCLCold-climate score, best model
Ducted, up to 1.5 tons	75.4(50 is the typical model of its size class) (higher)ASUM18HPMULO6 of 6 models qualify · AHRI 216032437	68.6(50 is the typical model of its size class)THH18TEI2NAG0F24with ducted air handler THH18IEI2NAG0F24Also listed as H18TDHXPC11 of 11 models qualify · AHRI 218083091
Ducted, 2 tons	62.9(50 is the typical model of its size class)ASUM24HPMULO4 of 4 models qualify · AHRI 216032438	69.7(50 is the typical model of its size class) (higher)H24TDHXPCwith ducted air handler H24FAHUDE11 of 12 models qualify · AHRI 218332483
Ducted, 2.5–3 tons	73.8(50 is the typical model of its size class) (higher)ASPR30HPMULO6 of 9 models qualify · AHRI 216032400	67.4(50 is the typical model of its size class)THH30TEI2NAG0F24with ducted air handler THH30IEI2NAG0F24Also listed as H30TDHXPC19 of 21 models qualify · AHRI 218082877
Ducted, 3.5–4.5 tons	77.1(50 is the typical model of its size class) (higher)ASUM42HPMULO5 of 5 models qualify · AHRI 216032440	69.4(50 is the typical model of its size class)H48SDH20XQCwith ducted air handler H48APH20UDEAlso listed as THH48HDI2NAJ0H2622 of 22 models qualify · AHRI 218453819
Non-ducted, up to 1.5 tons	83.5(50 is the typical model of its size class) (higher)AM2-H18/2DR3BAlso listed as ASUM18HPMULO80 of 120 models qualify · AHRI 214097940	72.4(50 is the typical model of its size class)TMH18HEI2NAS0U25Also listed as H18FMHD3XPC, TMH18HEI2NAS0U2571 of 95 models qualify · AHRI 218028413
Non-ducted, 2 tons	84.6(50 is the typical model of its size class) (higher)AM3-H24/2DR3BAlso listed as ASUM24HPMULO16 of 33 models qualify · AHRI 214097943	62.9(50 is the typical model of its size class)TSH24HDI2NAN0T26with ductless indoor unit TSH24IDI2NAN0T26Also listed as H24SBH23XQC12 of 21 models qualify · AHRI 218082864
Non-ducted, 2.5–3 tons	73.4(50 is the typical model of its size class) (higher)AM4-H36/2DR3BAlso listed as ASUM36HPMULO18 of 22 models qualify · AHRI 214097941	68.4(50 is the typical model of its size class)TMH27HEI2NAS0U25Also listed as H27FMHD4XPC, TMH27HEI2NAS0U2519 of 28 models qualify · AHRI 218028414
Non-ducted, 3.5–4.5 tons	60.1(50 is the typical model of its size class) (higher)ASUM42HPMULO2 of 2 models qualify · AHRI 216050942	48.4(50 is the typical model of its size class)TMH48HEI2NAS0U2511 of 12 models qualify · AHRI 218028416

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	AUXAll-around score, best model	TCLAll-around score, best model
Ducted, up to 1.5 tons	79.8(50 is the typical model of its size class) (higher)ASUM18HPMULO6 of 6 models have all five ratings · AHRI 216032437	73.4(50 is the typical model of its size class)TMH18HEI2NAS0U25*Also listed as H18FMHD3XPC11 of 11 models have all five ratings · AHRI 218625046
Ducted, 2 tons	78.2(50 is the typical model of its size class) (higher)ASUM24HPMULO4 of 4 models have all five ratings · AHRI 216032438	70.0(50 is the typical model of its size class)H24SDH20XQCwith ducted air handler H24APH20UDEAlso listed as THH24HDI2NAJ0H2614 of 14 models have all five ratings · AHRI 218453815
Ducted, 2.5–3 tons	81.4(50 is the typical model of its size class) (higher)ASUM36HPMULO9 of 9 models have all five ratings · AHRI 216032439	80.6(50 is the typical model of its size class)TMH27HEI2NAS0U25*Also listed as H27FMHD4XPC19 of 19 models have all five ratings · AHRI 218625047
Ducted, 3.5–4.5 tons	87.2(50 is the typical model of its size class) (higher)ASUM42HPMULO5 of 5 models have all five ratings · AHRI 216032440	66.1(50 is the typical model of its size class)TMH42HDI2NAO0U25Also listed as TMH42HDI2NAO0U2522 of 22 models have all five ratings · AHRI 218467786
Non-ducted, up to 1.5 tons	84.2(50 is the typical model of its size class) (higher)ASW-H18E3B2/R3DI-D2with ductless indoor unit ASW-H18E3B2/R3DI-D2Also listed as ASW-H18E3B2/**R3DI-D2102 of 120 models have all five ratings · AHRI 215218928	83.6(50 is the typical model of its size class)TMH18HEI2NAS0U25Also listed as H18FMHD3XPC, TMH18HEI2NAS0U2585 of 96 models have all five ratings · AHRI 218028413
Non-ducted, 2 tons	87.0(50 is the typical model of its size class) (higher)ASW-H24F6A2/ R3DI-D7with ductless indoor unit ASW-H24F6A2/ R3DI-D7Also listed as ASW-H24F6A2/**R3DI-D729 of 33 models have all five ratings · AHRI 217115274	66.5(50 is the typical model of its size class)TSH24HDI2NAN0T26with ductless indoor unit TSH24IDI2NAN0T26Also listed as H24SBH23XQC18 of 19 models have all five ratings · AHRI 218082864
Non-ducted, 2.5–3 tons	78.5(50 is the typical model of its size class)AM4-H36/2DR3BAlso listed as ASUM36HPMULO18 of 22 models have all five ratings · AHRI 214097941	83.2(50 is the typical model of its size class) (higher)TMH27HEI2NAS0U25Also listed as H27FMHD4XPC, TMH27HEI2NAS0U2528 of 29 models have all five ratings · AHRI 218028414
Non-ducted, 3.5–4.5 tons	74.4(50 is the typical model of its size class) (higher)ASUM42HPMULO2 of 2 models have all five ratings · AHRI 216050942	70.2(50 is the typical model of its size class)TMH48HEI2NAS0U2512 of 12 models have all five ratings · AHRI 218028416

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	AUX	TCL
COP at 5°F	beats 100% · 2.52AFEB09HP115V1CONon-ducted, up to 1.5 tons	beats 87% · 2.25TSH24HDI2NAL0B25Also listed as H24SVH20XQCNon-ducted, 2 tons
Capacity retention at 5°F	beats 99% · 108%AM3-H24/2DR3BAlso listed as ASUM24HPMULONon-ducted, 2 tons	beats 99% · 125%H24TDHXPCDucted, 2 tons
HSPF2	beats 96% · 11.0AM4-H36/2DR3BAlso listed as ASUM36HPMULONon-ducted, 2.5–3 tons	beats 96% · 10.5TMH36HEI2NAM5U24Also listed as H36FMH21XPCDucted, 2.5–3 tons
SEER2	beats 100% · 22.0ASUM42HPMULODucted, 3.5–4.5 tons	beats 100% · 22.0TMH27HEI2NAS0U25*Also listed as H27FMHD4XPCDucted, 2.5–3 tons
EER2	beats 97% · 14.0AMAR24HP230V1CONon-ducted, 2 tons	beats 97% · 14.0TMH27HEI2NAS0U25Also listed as H27FMHD4XPC, TMH27HEI2NAS0U25Non-ducted, 2.5–3 tons
Heating capacity at 5°F	beats 99% · 21,800 Btu/hAM2-H18/2DR3BAlso listed as ASUM18HPMULONon-ducted, up to 1.5 tons	beats 99% · 30,000 Btu/hH24TDHXPCDucted, 2 tons

In the cold

NEEP cold-climate listings of both manufacturers against all listed models.

AUX vs TCL: capacity and COP from 47°F downNEEP cold-climate listings at maximum capacity · 6,130 models (45.8% of the catalog) have ratings at 47, 17 and 5°F

All listed models (median, middle 50% and 80%)
AUX (median, middle 50%)
TCL (median, middle 50%)

One curve per model: its NEEP-rated certification with the best 5°F COP. Every point of a curve is over the same models. NEEP lists only models submitted to it, so this is a cold-climate-leaning subset, not the whole catalog.

Show the data as a table

All listed models: capacity, % of its 47°F maximum
Scope, temperature	Models	10th pct.	25th	Median	75th	90th
All rated models, 47°F	6,130	100%	100%	100%	100%	100%
All rated models, 17°F	6,130	64%	69%	74%	83%	91%
All rated models, 5°F	6,130	57%	61%	69%	77%	83%

All listed models: COP at maximum capacity
Scope, temperature	Models	10th pct.	25th	Median	75th	90th
All rated models, 47°F	6,130	2.8	3.01	3.24	3.48	3.66
All rated models, 17°F	6,130	2	2.14	2.3	2.42	2.61
All rated models, 5°F	6,130	1.8	1.87	2	2.1	2.24

AUX: capacity, % of its 47°F maximum
Scope, temperature	Models	10th pct.	25th	Median	75th	90th
AUX, 47°F	65	100%	100%	100%	100%	100%
AUX, 17°F	65	67%	70%	73%	79%	85%
AUX, 5°F	65	62%	65%	70%	73%	83%

AUX: COP at maximum capacity
Scope, temperature	Models	10th pct.	25th	Median	75th	90th
AUX, 47°F	65	2.93	3.18	3.3	3.52	3.72
AUX, 17°F	65	2.1	2.17	2.28	2.34	2.45
AUX, 5°F	65	1.89	2	2	2.1	2.18

TCL: capacity, % of its 47°F maximum
Scope, temperature	Models	10th pct.	25th	Median	75th	90th
TCL, 47°F	106	100%	100%	100%	100%	100%
TCL, 17°F	106	67%	72%	75%	82%	92%
TCL, 5°F	106	58%	65%	70%	72%	77%

TCL: COP at maximum capacity
Scope, temperature	Models	10th pct.	25th	Median	75th	90th
TCL, 47°F	106	2.49	2.8	3.08	3.5	3.71
TCL, 17°F	106	2	2.09	2.2	2.3	2.47
TCL, 5°F	106	1.8	1.8	1.9	2	2.03

Source: NEEP ccASHP list · as of Oct 25, 2026

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AUX vs TCL heat pumps