APLUS vs COVAC heat pumps

Measured against models of the same size and duct type, COVAC scores higher on 3 of the 6 ratings. APLUS has 5 outdoor models, COVAC has 5 outdoor models. APLUS and COVAC have no QMID on file and are not ranked.

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

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.

APLUS and COVAC 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, COVAC scores higher on 3 of the 6 ratings.

APLUS
COVAC
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	APLUS	COVAC
Efficiency index	—median —	55%median —
COP at 5°F	—median —	40%median 1.99
Capacity retention at 5°F	—median —	37%median 65%
HSPF2	21%median 7.5	51%median 9.1
SEER2	13%median 14.3	59%median 20.0
EER2	51%median 11.5	53%median 11.0
Heating capacity at 5°F	—median —	33%median 14,850 Btu/h
Outdoor models	5	5
AHRI certifications	9	9

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	APLUS	COVAC
CEE 2025 Tier 1 (Split ASHP)	0%0 models	80%4 models
CEE 2026 Tier 1 (Split ASHP)	0%0 models	80%4 models
CEE Advanced Tier (Split ASHP)	0%0 models	0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)	0%0 models	20%1 models
DOE Cold Climate Heat Pump Challenge	0%0 models	0%0 models
ENERGY STAR Cold Climate	0%0 models	0%0 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 · 1 groups where both have models

APLUS
COVAC
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	APLUS	COVAC
Ducted, up to 1.5 tons	1 · index —	None
Ducted, 2 tons	2 · index —	None
Ducted, 2.5–3 tons	2 · index —	1 · index 72%
Ducted, 3.5–4.5 tons	None	1 · index 64%
Non-ducted, up to 1.5 tons	None	2 · index 45%
Non-ducted, 2.5–3 tons	None	2 · index 53%
Non-ducted, 3.5–4.5 tons	None	1 · index 48%

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	APLUSCold-climate score, best model	COVACCold-climate score, best model
Ducted, up to 1.5 tons	None on this board (0 of 1 models qualify)	No models in this size class
Ducted, 2 tons	None on this board (0 of 2 models qualify)	No models in this size class
Ducted, 2.5–3 tons	None on this board (0 of 2 models qualify)	None on this board (0 of 1 models qualify)
Ducted, 3.5–4.5 tons	No models in this size class	None on this board (0 of 1 models qualify)
Non-ducted, up to 1.5 tons	No models in this size class	56.7(50 is the typical model of its size class)MOX230-09HFN1-BS5Wwith ductless indoor unit MSAG11A-09HRFN1-BS5W1 of 2 models qualify · AHRI 213081434
Non-ducted, 2.5–3 tons	No models in this size class	42.4(50 is the typical model of its size class)M4OG-30HFN1-M1 of 2 models qualify · AHRI 213081439
Non-ducted, 3.5–4.5 tons	No models in this size class	None on this board (0 of 1 models qualify)

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	APLUSAll-around score, best model	COVACAll-around score, best model
Ducted, up to 1.5 tons	None on this board (0 of 1 models have all five ratings)	No models in this size class
Ducted, 2 tons	None on this board (0 of 2 models have all five ratings)	No models in this size class
Ducted, 2.5–3 tons	None on this board (0 of 2 models have all five ratings)	72.0(50 is the typical model of its size class)M4OG-30HFN1-M1 of 1 models have all five ratings · AHRI 213081440
Ducted, 3.5–4.5 tons	No models in this size class	63.5(50 is the typical model of its size class)M5OG-48HFN1-M1 of 1 models have all five ratings · AHRI 213081437
Non-ducted, up to 1.5 tons	No models in this size class	54.6(50 is the typical model of its size class)MOX230-09HFN1-BS5Wwith ductless indoor unit MSAG11A-09HRFN1-BS5W2 of 2 models have all five ratings · AHRI 213081434
Non-ducted, 2.5–3 tons	No models in this size class	57.9(50 is the typical model of its size class)M4OG-30HFN1-M1 of 2 models have all five ratings · AHRI 213081439
Non-ducted, 3.5–4.5 tons	No models in this size class	48.3(50 is the typical model of its size class)M5OG-48HFN1-M1 of 1 models have all five ratings · AHRI 213081436

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	APLUS	COVAC
COP at 5°F	—	beats 83% · 2.16MOX230-09HFN1-BS5WNon-ducted, up to 1.5 tons
Capacity retention at 5°F	—	beats 62% · 77%M4OG-30HFN1-MNon-ducted, 2.5–3 tons
HSPF2	beats 21% · 7.5ATD-HF30SMR1-A01/SE143Ducted, 2.5–3 tons	beats 95% · 9.7M5OG-48HFN1-MDucted, 3.5–4.5 tons
SEER2	beats 13% · 14.3ATD-HF30SMR1-A01/SE143Ducted, 2.5–3 tons	beats 95% · 20.5M5OG-48HFN1-MDucted, 3.5–4.5 tons
EER2	beats 57% · 11.5ATD-HF30SMR1-A01/SE143Ducted, 2.5–3 tons	beats 81% · 12.0M4OG-30HFN1-MDucted, 2.5–3 tons
Heating capacity at 5°F	—	beats 63% · 11,700 Btu/hMOX330-18HFN1-MS0WNon-ducted, up to 1.5 tons

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