CLASSIC heat pump efficiency: 40 outdoor models compared

CLASSIC has 40 heat pump outdoor models certified with this refrigerant group, in 68 AHRI-certified combinations. Each model is compared with models of the same size and duct type, so the scores below do not depend on which sizes CLASSIC makes. CLASSIC has no QMID (IRS Qualified Manufacturer ID) on file, so it is not ranked against other manufacturers.

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ManufacturerData as of Oct 11, 2026updated Oct 11, 2026 · sources

Outdoor models: 40
AHRI certifications: 68
Efficiency index: 41%; Typical model vs same-size, same-type peers (48 models)
Meet CEE 2025: 65%; 26 models

How CLASSIC compares with comparable models

For each rating: the share of same-size, same-type models that a typical model of this manufacturer beats (50% is typical), its rank, and the raw median for context. Raw medians are not comparable across manufacturers that make different sizes.

CLASSIC against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of CLASSIC’s own modelsCLASSIC is strongest on heating capacity at 5°F (its typical model beats 47% of comparable models) and weakest on HSPF2 (37%).

CLASSIC
Middle half of its models
Other ranked manufacturers

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

Average peer percentile of CLASSIC’s models
Rating	Beats comparable models	Rank	Raw median
Efficiency index48 models scored	41%	Not ranked	—
COP at 5°F48 models scored	37%	Not ranked	1.90
Capacity retention at 5°F48 models scored	43%	Not ranked	74%
HSPF248 models scored	37%	Not ranked	8.8
SEER248 models scored	45%	Not ranked	19.0
EER248 models scored	40%	Not ranked	11.2
Heating capacity at 5°F48 models scored	47%	Not ranked	11,750 Btu/h

Standards met

Share of CLASSIC’s models with at least one qualifying certification
Standard	Share	Models
CEE 2025 Tier 1 (Split ASHP)	65%	26
CEE 2026 Tier 1 (Split ASHP)	65%	26
CEE Advanced Tier (Split ASHP)	2.5%	1
Xcel Energy Colorado cold-climate ASHP (2025)	65%	26
DOE Cold Climate Heat Pump Challenge	2.5%	1
ENERGY STAR Cold Climate	20%	8

Sizes and duct types offered

Models per peer group, and how they score against the other models of that group.

CLASSIC’s models inside each size and duct typeShape: every model of the group · blue: the middle half of this manufacturer’s models there, median dot, 10th–90th percentile line

CLASSIC (median, middle 50%, 10th–90th)
All models of the group

Source: AHRI Directory · as of Oct 11, 2026

Share of comparable models beaten, per peer group
Size and duct type	Models	Index	COP@5°F	HSPF2	SEER2
Ducted, up to 1.5 tons	2	54%	46%	43%	79%
Ducted, 2 tons	4	61%	55%	55%	66%
Ducted, 2.5–3 tons	2	56%	27%	57%	76%
Ducted, 3.5–4.5 tons	4	70%	67%	73%	83%
Non-ducted, up to 1.5 tons	23	29%	29%	24%	30%
Non-ducted, 2 tons	6	35%	24%	38%	30%
Non-ducted, 2.5–3 tons	5	41%	44%	40%	47%
Non-ducted, 3.5–4.5 tons	2	59%	60%	40%	70%

Every CLASSIC model in the market

CLASSIC’s 48 models with a known size and duct type, over the shape of the whole catalog.

CLASSIC models by size and ratingColoured: CLASSIC · grey shapes: all 14,508 models · lines: catalog medians by size

CLASSIC models
Ducted median by size
Non-ducted median by size
Every model at each size (width = count)
Standard threshold

Dots: 48 classic models, each through its representative certification, in the colour of the rating shown. The grey shapes count all 14,508 models, half a ton at a time.

Show the data as a table

COP at 5°F by size and duct type (every model, by rated cooling capacity)
Duct type, size	Models	10th pct.	25th	Median	75th	90th
Ducted, 0.5 tons	826	1.64	1.71	1.75	1.85	2.24
Ducted, 1 ton	407	1.80	1.90	2.05	2.41	2.45
Ducted, 1.5 tons	992	1.75	1.86	2.00	2.17	2.40
Ducted, 2 tons	999	1.75	1.86	2.00	2.18	2.30
Ducted, 2.5 tons	1,040	1.70	1.80	2.00	2.10	2.36
Ducted, 3 tons	696	1.80	1.90	2.00	2.10	2.42
Ducted, 3.5 tons	865	1.70	1.80	2.00	2.10	2.46
Ducted, 4 tons	726	1.80	1.86	2.00	2.12	2.41
Ducted, 4.5 tons	690	1.70	1.80	1.90	2.10	2.20
Ducted, 5 tons	86	1.89	2.00	2.10	2.10	2.10
Non-ducted, 0.5 tons	1,186	1.75	1.80	1.90	2.00	2.22
Non-ducted, 1 ton	1,343	1.80	1.80	1.99	2.10	2.21
Non-ducted, 1.5 tons	1,261	1.80	1.80	2.00	2.10	2.31
Non-ducted, 2 tons	761	1.80	1.98	2.00	2.10	2.30
Non-ducted, 2.5 tons	403	1.80	1.85	2.00	2.00	2.10
Non-ducted, 3 tons	473	1.90	1.98	2.00	2.03	2.20
Non-ducted, 3.5 tons	280	2.00	2.00	2.00	2.05	2.10
Non-ducted, 4 tons	204	1.96	2.00	2.05	2.10	2.11
Non-ducted, 4.5 tons	78	1.90	1.91	1.95	2.01	2.01
Non-ducted, 5 tons	84	1.99	2.00	2.05	2.20	2.20

Source: AHRI Directory · as of Oct 11, 2026

Top CLASSIC models

Its top five cold-climate picks and its top five all-around models across sizes (both scores compare each model with models of its own size and duct type, so sizes compare), then, on each single rating, the model that beats the largest share of comparable models.

Cold-climate picks

Top 5 CLASSIC cold-climate picks across sizes. 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.
# · Outdoor model	Size · type	Cap. 5/47	COP@5°F	HSPF2	Btu/h @5°F	SEER2	Meets	Combos	AHRI ref.	Compared with	Score
1GMRSHC36AS4CLASSIC · M-Series	3 tons36,000 Btu/h · Non-ducted	100%	2.10	10.0	36,000	21.0	CEE 25CEE 26CEE AdvXcelDOEES CC	3	217284815	Non-ducted, 2.5–3 tons	77.2
2OCV18HN048AClassicwith ducted air handler OCA18C006AAlso listed as OCV18HN060A	4 tons47,000 Btu/h · Ducted	72%	2.30	9.2	34,000	18.5	CEE 25CEE 26Xcel	1	217747074	Ducted, 3.5–4.5 tons	72.2
3GMRSHC24AS3CLASSIC · M-Series	2 tons24,000 Btu/h · Non-ducted	90%	2.00	10.0	21,600	21.0	CEE 25CEE 26XcelES CC	3	217284804	Non-ducted, 2 tons	67.5
4GMRSHC42AS5CLASSIC · M-Series	3.5 tons42,000 Btu/h · Non-ducted	90%	2.10	10.0	37,800	21.0	CEE 25CEE 26XcelES CC	3	217284816	Non-ducted, 3.5–4.5 tons	66.5
5TMRHC42AS5Classic	3.5 tons39,000 Btu/h · Ducted	71%	2.00	10.0	29,800	20.0	CEE 25CEE 26Xcel	2	218787834	Ducted, 3.5–4.5 tons	63.6

All-around best

Top 5 CLASSIC models on the all-around score across sizes. 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.
# · Outdoor model	Size · type	Cap. 5/47	COP@5°F	HSPF2	SEER2	EER2	Meets	Combos	AHRI ref.	Compared with	Score	Heating half	Cooling half	Cold-climate score
1OCV18HN048AClassicwith ducted air handler OCA18C006AAlso listed as OCV18HN060A	4 tons47,000 Btu/h · Ducted	72%	2.30	9.2	18.5	11.5	CEE 25CEE 26Xcel	1	217747074	Ducted, 3.5–4.5 tons	72.6	72.2	73.0	72.2
2GMRSHC42AS5CLASSIC · M-Series	3.5 tons42,000 Btu/h · Ducted	86%	1.90	8.1	18.0	12.0	CEE 25CEE 26XcelES CC	3	217284820	Ducted, 3.5–4.5 tons	69.1	55.7	82.5	55.7
3OCV18HN024AClassicwith ducted air handler OCA18C002AAlso listed as OCV18HN036A	2 tons24,000 Btu/h · Ducted	79%	2.15	8.8	18.5	12.5	CEE 25CEE 26Xcel	1	217747068	Ducted, 2 tons	68.1	60.4	75.7	60.4
4GMRSHC42AS5CLASSIC · M-Series	3.5 tons42,000 Btu/h · Non-ducted	90%	2.10	10.0	21.0	13.0	CEE 25CEE 26XcelES CC	3	217284816	Non-ducted, 3.5–4.5 tons	67.7	66.5	68.8	66.5
5GMRSHC24AS3CLASSIC · M-Series	2 tons24,000 Btu/h · Non-ducted	90%	2.00	10.0	21.0	13.3	CEE 25CEE 26XcelES CC	3	217284804	Non-ducted, 2 tons	67.6	67.5	67.8	67.5

Best model on each rating

CLASSIC’s model with the highest peer percentile on each rating, ranked by that one rating only
Rating	Model	Value	Compared with	Beats	AHRI ref.
COP at 5°F	GMRSHC36AS4	2.10	Non-ducted, 2.5–3 tons	88%	217284815
Capacity retention at 5°F	GMRSHC36AS4	100%	Non-ducted, 2.5–3 tons	81%	217284815
HSPF2	TMRHC42AS5	10.0	Ducted, 3.5–4.5 tons	86%	218787834
SEER2	TMRHC18AS2	22.0	Ducted, up to 1.5 tons	97%	218787831
EER2	GMRSHC42AS5	13.0	Non-ducted, 3.5–4.5 tons	94%	217284816
Heating capacity at 5°F	GMRSHC36AS4	36,000 Btu/h	Non-ducted, 2.5–3 tons	86%	217284815

All 40 CLASSIC models in Explore

CLASSIC size class by size class: cold-climate and all-around

Its best model on each board in every size and duct type it makes. Both scores are 0–100 against every model of that size class (the line on each bar is 50, the typical model there). Cold-climate picks must keep at least 70% of their heat at 5°F; the all-around score needs all five ratings and has no such bar.

CLASSIC: best cold-climate pick and best all-around model per size and duct type, with how many of its models are on each board (top 5 and 5 per class are in the snapshot)
Size and duct type	Cold-climate pickCold-climate score, best model	All-around bestAll-around score, best model
Ducted, up to 1.5 tons	44.0(50 is the typical model of its size class)TMRHC18AS22 of 2 models qualify · AHRI 218787831	60.2(50 is the typical model of its size class)TMRHC18AS22 of 2 models have all five ratings · AHRI 218787831
Ducted, 2 tons	60.4(50 is the typical model of its size class)OCV18HN024Awith ducted air handler OCA18C002AAlso listed as OCV18HN036A4 of 4 models qualify · AHRI 217747068	68.1(50 is the typical model of its size class)OCV18HN024Awith ducted air handler OCA18C002AAlso listed as OCV18HN036A4 of 4 models have all five ratings · AHRI 217747068
Ducted, 2.5–3 tons	52.2(50 is the typical model of its size class)GMRSHC36AS42 of 2 models qualify · AHRI 217284819	59.0(50 is the typical model of its size class)GMRSHC36AS42 of 2 models have all five ratings · AHRI 217284819
Ducted, 3.5–4.5 tons	72.2(50 is the typical model of its size class)OCV18HN048Awith ducted air handler OCA18C006AAlso listed as OCV18HN060A4 of 4 models qualify · AHRI 217747074	72.6(50 is the typical model of its size class)OCV18HN048Awith ducted air handler OCA18C006AAlso listed as OCV18HN060A4 of 4 models have all five ratings · AHRI 217747074
Non-ducted, up to 1.5 tons	61.9(50 is the typical model of its size class)TMRHC18AS216 of 23 models qualify · AHRI 218787827	62.1(50 is the typical model of its size class)TMRHC18AS223 of 23 models have all five ratings · AHRI 218787827
Non-ducted, 2 tons	67.5(50 is the typical model of its size class)GMRSHC24AS34 of 6 models qualify · AHRI 217284804	67.6(50 is the typical model of its size class)GMRSHC24AS36 of 6 models have all five ratings · AHRI 217284804
Non-ducted, 2.5–3 tons	77.2(50 is the typical model of its size class)GMRSHC36AS44 of 5 models qualify · AHRI 217284815	64.5(50 is the typical model of its size class)GMRSHC36AS45 of 5 models have all five ratings · AHRI 217284815
Non-ducted, 3.5–4.5 tons	66.5(50 is the typical model of its size class)GMRSHC42AS52 of 2 models qualify · AHRI 217284816	67.7(50 is the typical model of its size class)GMRSHC42AS52 of 2 models have all five ratings · AHRI 217284816

All-around board, every manufacturer

Newest CLASSIC certifications

By AHRI reference number; AHRI issues references in increasing order.

The 5 most recently certified CLASSIC outdoor models
Outdoor model	Size · type	COP@5°F	Cap. 5/47	HSPF2	SEER2	Meets	Combos	AHRI ref.
TSZRHC24ASClassicwith ductless indoor unit TMWHC24S	2 tons24,000 Btu/h · Non-ducted	1.80	67%	9.5	20.0	CEE 25CEE 26Xcel	4	218787848
TSZRHC18ASClassicwith ductless indoor unit TMWHC18S	1.5 tons18,000 Btu/h · Non-ducted	1.80	67%	10.0	20.0	None	4	218787847
TSZRHC12ASClassicwith ductless indoor unit TMWHC12S	1 ton12,000 Btu/h · Non-ducted	1.80	73%	10.0	20.0	CEE 25CEE 26Xcel	3	218787846
TSZRHC09ASClassicwith ductless indoor unit TMWHC09S	1 ton9,000 Btu/h · Non-ducted	1.80	80%	9.5	21.0	CEE 25CEE 26Xcel	3	218787845
TMRHC42AS5Classic	3.5 tons39,000 Btu/h · Ducted and non-ducted	2.00	71%	10.0	20.0	CEE 25CEE 26Xcel	2	218787834

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Manufacturers of a similar size, side by side.

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CLASSIC includes these brand names as listed in AHRI: CLASSIC. Standards are checked against published thresholds; program rules beyond ratings are not checked.