COVAC heat pump efficiency: 3 outdoor models compared

COVAC has 3 heat pump outdoor models certified with this refrigerant group, in 3 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 COVAC makes. COVAC 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: 3
AHRI certifications: 3
Efficiency index: 35%; Typical model vs same-size, same-type peers (3 models)
Meet CEE 2025: 66.7%; 2 models

How COVAC 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.

COVAC against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of COVAC’s own modelsCOVAC is strongest on COP at 5°F (its typical model beats 47% of comparable models) and weakest on capacity retention at 5°F (13%).

COVAC
Middle half of its models
Other ranked manufacturers

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

Average peer percentile of COVAC’s models
Rating	Beats comparable models	Rank	Raw median
Efficiency index3 models scored	35%	Not ranked	—
COP at 5°F3 models scored	47%	Not ranked	1.95
Capacity retention at 5°F3 models scored	13%	Not ranked	61%
HSPF23 models scored	28%	Not ranked	9.0
SEER23 models scored	46%	Not ranked	21.3
EER23 models scored	36%	Not ranked	11.5
Heating capacity at 5°F3 models scored	29%	Not ranked	7,000 Btu/h

Standards met

Share of COVAC’s models with at least one qualifying certification
Standard	Share	Models
CEE 2025 Tier 1 (Split ASHP)	66.7%	2
CEE 2026 Tier 1 (Split ASHP)	66.7%	2
CEE Advanced Tier (Split ASHP)	0%	0
Xcel Energy Colorado cold-climate ASHP (2025)	33.3%	1
DOE Cold Climate Heat Pump Challenge	0%	0
ENERGY STAR Cold Climate	0%	0

Sizes and duct types offered

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

COVAC’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

COVAC (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
Non-ducted, up to 1.5 tons	3	35%	47%	28%	46%

Every COVAC model in the market

COVAC’s 3 models with a known size and duct type, over the shape of the whole catalog.

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

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

Dots: 3 covac 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 COVAC 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 1 COVAC 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
1COV-S5-09R454-OCOVACwith ductless indoor unit COV-S5-09R454-I	1 ton9,000 Btu/h · Non-ducted	70%	1.95	9.0	7,000	21.5	CEE 25CEE 26Xcel	1	217120337	Non-ducted, up to 1.5 tons	34.7

All-around best

Top 3 COVAC 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
1COV-S5-09R454-OCOVACwith ductless indoor unit COV-S5-09R454-I	1 ton9,000 Btu/h · Non-ducted	70%	1.95	9.0	21.5	12.5	CEE 25CEE 26Xcel	1	217120337	Non-ducted, up to 1.5 tons	44.9	34.7	55.1	34.7
2COV-S5-18R454-OCOVACwith ductless indoor unit COV-S5-18R454-I	1.5 tons18,000 Btu/h · Non-ducted	61%	1.99	9.1	20.2	11.5	CEE 25CEE 26	1	217120335	Non-ducted, up to 1.5 tons	34.3	33.3	35.4	Not a pick
3COV-S5-12R454-OCOVACwith ductless indoor unit COV-S5-12R454-I	1 ton12,000 Btu/h · Non-ducted	58%	1.85	8.7	21.3	10.0	None	1	217120336	Non-ducted, up to 1.5 tons	26.4	20.3	32.6	Not a pick

Best model on each rating

COVAC’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	COV-S5-18R454-O	1.99	Non-ducted, up to 1.5 tons	56%	217120335
Capacity retention at 5°F	COV-S5-09R454-O	70%	Non-ducted, up to 1.5 tons	24%	217120337
HSPF2	COV-S5-18R454-O	9.1	Non-ducted, up to 1.5 tons	34%	217120335
SEER2	COV-S5-09R454-O	21.5	Non-ducted, up to 1.5 tons	51%	217120337
EER2	COV-S5-09R454-O	12.5	Non-ducted, up to 1.5 tons	56%	217120337
Heating capacity at 5°F	COV-S5-18R454-O	11,500 Btu/h	Non-ducted, up to 1.5 tons	63%	217120335

All 3 COVAC models in Explore

COVAC 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.

COVAC: 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
Non-ducted, up to 1.5 tons	34.7(50 is the typical model of its size class)COV-S5-09R454-Owith ductless indoor unit COV-S5-09R454-I1 of 3 models qualify · AHRI 217120337	44.9(50 is the typical model of its size class)COV-S5-09R454-Owith ductless indoor unit COV-S5-09R454-I3 of 3 models have all five ratings · AHRI 217120337

All-around board, every manufacturer

Newest COVAC certifications

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

The 3 most recently certified COVAC outdoor models
Outdoor model	Size · type	COP@5°F	Cap. 5/47	HSPF2	SEER2	Meets	Combos	AHRI ref.
COV-S5-09R454-OCOVACwith ductless indoor unit COV-S5-09R454-I	1 ton9,000 Btu/h · Non-ducted	1.95	70%	9.0	21.5	CEE 25CEE 26Xcel	1	217120337
COV-S5-12R454-OCOVACwith ductless indoor unit COV-S5-12R454-I	1 ton12,000 Btu/h · Non-ducted	1.85	58%	8.7	21.3	None	1	217120336
COV-S5-18R454-OCOVACwith ductless indoor unit COV-S5-18R454-I	1.5 tons18,000 Btu/h · Non-ducted	1.99	61%	9.1	20.2	CEE 25CEE 26	1	217120335

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Compare COVAC

Manufacturers of a similar size, side by side.

Compare with any manufacturer

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