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.

EG4 and XTRON 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, EG4 scores higher on 5 of the 6 ratings.

EG4
XTRON
Other ranked manufacturers

Source: AHRI Directory, NEEP · as of Oct 11, 2026

Average peer percentile, raw median and rank among ranked manufacturers
Rating	EG4	XTRON
Efficiency index	66% (higher)median —	58% (higher)median —
COP at 5°F	76% (higher)median 2.10	60% (higher)median 2.00
Capacity retention at 5°F	75% (higher)median 95%	60% (higher)median 78%
HSPF2	72% (higher)median 10.0	63% (higher)median 9.0
SEER2	58%median 21.5	68%median 18.0
EER2	65% (higher)median 12.6	42% (higher)median 11.3
Heating capacity at 5°F	64% (higher)median 18,250 Btu/h	61% (higher)median 23,000 Btu/h
Outdoor models	11	11
AHRI certifications	11	27

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	EG4	XTRON
CEE 2025 Tier 1 (Split ASHP)	72.7%8 models	72.7%8 models
CEE 2026 Tier 1 (Split ASHP)	72.7%8 models	72.7%8 models
CEE Advanced Tier (Split ASHP)	0%0 models	0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)	72.7%8 models	72.7%8 models
DOE Cold Climate Heat Pump Challenge	0%0 models	0%0 models
ENERGY STAR Cold Climate	72.7%8 models	45.5%5 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

EG4
XTRON
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 11, 2026

Models per peer group · efficiency index within the group
Size and duct type	EG4	XTRON
Ducted, up to 1.5 tons	None	2 · index 54%
Ducted, 2 tons	None	2 · index 52%
Ducted, 2.5–3 tons	None	5 · index 62%
Ducted, 3.5–4.5 tons	None	2 · index 51%
Non-ducted, up to 1.5 tons	6 · index 64%	1 · index 60%
Non-ducted, 2 tons	4 · index 67%	1 · index 72%
Non-ducted, 2.5–3 tons	1 · index 71%	3 · index 58%

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	EG4Cold-climate score, best model	XTRONCold-climate score, best model
Ducted, up to 1.5 tons	No models in this size class	55.6(50 is the typical model of its size class)XM2-H18/2DR3A2 of 2 models qualify · AHRI 217606758
Ducted, 2 tons	No models in this size class	59.1(50 is the typical model of its size class)XM3-H24/2DR3A2 of 2 models qualify · AHRI 217606759
Ducted, 2.5–3 tons	No models in this size class	73.8(50 is the typical model of its size class)XM4-H30/2DR3A5 of 5 models qualify · AHRI 217606760
Ducted, 3.5–4.5 tons	No models in this size class	72.3(50 is the typical model of its size class)XHU48HPV1AOwith ducted air handler XHU48HPV1AI2 of 2 models qualify · AHRI 217606778
Non-ducted, up to 1.5 tons	82.4(50 is the typical model of its size class) (higher)DWLA4-ACDC1-12KR2(US)with ductless indoor unit DGLA4-ACDC1-12KR2(US)Also listed as DWLA4-12KR2(US)3 of 6 models qualify · AHRI 216772360	64.5(50 is the typical model of its size class)XM2-H18/2DR3A1 of 1 models qualify · AHRI 217606753
Non-ducted, 2 tons	84.5(50 is the typical model of its size class) (higher)DWLC2-ACDC-24KR2(US)with ductless indoor unit DGLA3-ACDC-24KR2(US)Also listed as DWLC2-24KR2(US)4 of 4 models qualify · AHRI 216772362	67.5(50 is the typical model of its size class)XM3-H24/2DR3A1 of 1 models qualify · AHRI 217606754
Non-ducted, 2.5–3 tons	71.7(50 is the typical model of its size class) (higher)DW4E1-ACDC-36KR2(US)1 of 1 models qualify · AHRI 217958903	62.1(50 is the typical model of its size class)XM4-H30/2DR3A3 of 3 models qualify · AHRI 217606765

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	EG4All-around score, best model	XTRONAll-around score, best model
Ducted, up to 1.5 tons	No models in this size class	61.1(50 is the typical model of its size class)XM2-H18/2DR3A2 of 2 models have all five ratings · AHRI 217606758
Ducted, 2 tons	No models in this size class	66.1(50 is the typical model of its size class)XM3-H24/2DR3A2 of 2 models have all five ratings · AHRI 217606759
Ducted, 2.5–3 tons	No models in this size class	80.7(50 is the typical model of its size class)XM4-H30/2DR3A5 of 5 models have all five ratings · AHRI 217606760
Ducted, 3.5–4.5 tons	No models in this size class	53.2(50 is the typical model of its size class)XHU48HPV1AOwith ducted air handler XHU48HPV1AI2 of 2 models have all five ratings · AHRI 217606778
Non-ducted, up to 1.5 tons	70.7(50 is the typical model of its size class) (higher)DWLA4-ACDC1-12KR2(US)with ductless indoor unit DGLA4-ACDC1-12KR2(US)Also listed as DWLA4-12KR2(US)3 of 6 models have all five ratings · AHRI 216772360	59.7(50 is the typical model of its size class)XM2-H18/2DR3A1 of 1 models have all five ratings · AHRI 217606753
Non-ducted, 2 tons	72.1(50 is the typical model of its size class) (higher)DWLC2-ACDC-24KR2(US)with ductless indoor unit DGLA3-ACDC-24KR2(US)Also listed as DWLC2-24KR2(US)4 of 4 models have all five ratings · AHRI 216772362	71.8(50 is the typical model of its size class)XM3-H24/2DR3A1 of 1 models have all five ratings · AHRI 217606754
Non-ducted, 2.5–3 tons	70.6(50 is the typical model of its size class) (higher)DW4E1-ACDC-36KR2(US)1 of 1 models have all five ratings · AHRI 217958903	66.6(50 is the typical model of its size class)XM4-H30/2DR3A3 of 3 models have all five ratings · AHRI 217606755

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	EG4	XTRON
COP at 5°F	beats 97% · 2.23DW4E1-ACDC-36KR2(US)Non-ducted, 2.5–3 tons	beats 83% · 2.05XM4-H30/2DR3ANon-ducted, 2.5–3 tons
Capacity retention at 5°F	beats 100% · 116%DWLC2-ACDC-24KR2(US)Also listed as DWLC2-24KR2(US)Non-ducted, 2 tons	beats 79% · 90%XM3-H24/2DR3ANon-ducted, 2 tons
HSPF2	beats 87% · 11.0DWLC2-ACDC-24KR2(US)Also listed as DWLC2-24KR2(US)Non-ducted, 2 tons	beats 84% · 10.0XM4-H36/2DR3ADucted, 2.5–3 tons
SEER2	beats 84% · 25.0DWA4-09KR2(US)Non-ducted, up to 1.5 tons	beats 94% · 20.0XM4-H30/2DR3ADucted, 2.5–3 tons
EER2	beats 87% · 14.5DWA4-09KR2(US)Non-ducted, up to 1.5 tons	beats 75% · 12.5XM4-H30/2DR3ANon-ducted, 2.5–3 tons
Heating capacity at 5°F	beats 81% · 22,000 Btu/hDWLC2-ACDC-24KR2(US)Also listed as DWLC2-24KR2(US)Non-ducted, 2 tons	beats 85% · 14,500 Btu/hXM2-H18/2DR3ANon-ducted, up to 1.5 tons

More comparisons

Pick any two manufacturers

EG4 vs XTRON heat pumps