MANASTIN vs MAXI AIR heat pumps

Measured against models of the same size and duct type, MAXI AIR scores higher on 6 of the 6 ratings. MANASTIN has 10 outdoor models, MAXI AIR has 10 outdoor models. MANASTIN and MAXI AIR have no QMID on file and are not ranked.

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CompareData as of Oct 9, 2026updated Oct 10, 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.

MANASTIN and MAXI AIR 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, MAXI AIR scores higher on 6 of the 6 ratings.

MANASTIN
MAXI AIR
Other ranked manufacturers

Source: AHRI Directory, NEEP · as of Oct 9, 2026

Average peer percentile, raw median and rank among ranked manufacturers
Rating	MANASTIN	MAXI AIR
Efficiency index	24%median —	75%median —
COP at 5°F	17%median 1.75	51%median 2.00
Capacity retention at 5°F	34%median 70%	83%median 98%
HSPF2	12%median 7.5	83%median 10.5
SEER2	28%median 17.0	77%median 23.0
EER2	26%median 10.2	77%median 12.8
Heating capacity at 5°F	22%median 7,400 Btu/h	84%median 27,000 Btu/h
Outdoor models	10	10
AHRI certifications	12	34

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	MANASTIN	MAXI AIR
CEE 2025 Tier 1 (Split ASHP)	40%4 models	100%10 models
CEE 2026 Tier 1 (Split ASHP)	40%4 models	100%10 models
CEE Advanced Tier (Split ASHP)	0%0 models	0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)	60%6 models	100%10 models
DOE Cold Climate Heat Pump Challenge	0%0 models	0%0 models
ENERGY STAR Cold Climate	0%0 models	70%7 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

MANASTIN
MAXI AIR
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 9, 2026

Models per peer group · efficiency index within the group
Size and duct type	MANASTIN	MAXI AIR
Ducted, up to 1.5 tons	None	2 · index 77%
Ducted, 2.5–3 tons	None	5 · index 77%
Ducted, 3.5–4.5 tons	None	1 · index 49%
Non-ducted, up to 1.5 tons	10 · index 24%	4 · index 75%
Non-ducted, 2.5–3 tons	None	4 · index 76%

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	MANASTINCold-climate score, best model	MAXI AIRCold-climate score, best model
Ducted, up to 1.5 tons	No models in this size class	70.8(50 is the typical model of its size class)T55-MULTI18E454Also listed as T55-MULTI18E4542 of 2 models qualify · AHRI 218381880
Ducted, 2.5–3 tons	No models in this size class	82.5(50 is the typical model of its size class)T55-MULTI36E454Also listed as T55-MULTI36E4545 of 5 models qualify · AHRI 217752780
Ducted, 3.5–4.5 tons	No models in this size class	60.5(50 is the typical model of its size class)MAXS-4260-454with ducted air handler AHMS-6020-4541 of 1 models qualify · AHRI 217752767
Non-ducted, up to 1.5 tons	47.6(50 is the typical model of its size class)DMLHT1W-09R4CBPH2with ductless indoor unit DMLHT1G-09R4CBPH2Also listed as DMLHT1W-09R4BBPH26 of 10 models qualify · AHRI 217563437	73.8(50 is the typical model of its size class) (higher)T55-AES18EXT454with ductless indoor unit T55-AES18INT4544 of 4 models qualify · AHRI 217752773
Non-ducted, 2.5–3 tons	No models in this size class	78.0(50 is the typical model of its size class)T55-MULTI36E454Also listed as T55-MULTI36E4544 of 4 models qualify · AHRI 217752781

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	MANASTINAll-around score, best model	MAXI AIRAll-around score, best model
Ducted, up to 1.5 tons	No models in this size class	77.4(50 is the typical model of its size class)T55-MULTI18E454Also listed as T55-MULTI18E4542 of 2 models have all five ratings · AHRI 218381880
Ducted, 2.5–3 tons	No models in this size class	83.6(50 is the typical model of its size class)T55-MULTI36E454Also listed as T55-MULTI36E4545 of 5 models have all five ratings · AHRI 217752780
Ducted, 3.5–4.5 tons	No models in this size class	49.1(50 is the typical model of its size class)MAXS-4260-454with ducted air handler AHMS-6020-4541 of 1 models have all five ratings · AHRI 217752767
Non-ducted, up to 1.5 tons	49.3(50 is the typical model of its size class)DMLHT1W-09R4CBPH2with ductless indoor unit DMLHT1G-09R4CBPH2Also listed as DMLHT1W-09R4BBPH210 of 10 models have all five ratings · AHRI 217563437	81.9(50 is the typical model of its size class) (higher)T55-MULTI18E454Also listed as T55-MULTI18E4544 of 4 models have all five ratings · AHRI 218381879
Non-ducted, 2.5–3 tons	No models in this size class	78.3(50 is the typical model of its size class)T55-MULTI36E454Also listed as T55-MULTI36E4544 of 4 models have all five ratings · AHRI 217752779

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	MANASTIN	MAXI AIR
COP at 5°F	beats 42% · 1.90DMLHT1W-09R4CBPH2Also listed as DMLHT1W-09R4BBPH2Non-ducted, up to 1.5 tons	beats 63% · 2.00T55-MULTI18E454Also listed as T55-MULTI18E454Ducted, up to 1.5 tons
Capacity retention at 5°F	beats 71% · 89%DMLHT1W-09R4CBPH2Also listed as DMLHT1W-09R4BBPH2Non-ducted, up to 1.5 tons	beats 97% · 107%MAXS-2430-454Ducted, 2.5–3 tons
HSPF2	beats 29% · 9.0DMLHT1W-09R4CBPH2Also listed as DMLHT1W-09R4BBPH2Non-ducted, up to 1.5 tons	beats 94% · 10.4T55-MULTI36E454Also listed as T55-MULTI36E454Ducted, 2.5–3 tons
SEER2	beats 56% · 22.0DMLHT1W-09R4CBPH2Also listed as DMLHT1W-09R4BBPH2Non-ducted, up to 1.5 tons	beats 88% · 25.4T55-AES12EXT454Non-ducted, up to 1.5 tons
EER2	beats 44% · 12.0DMLHT1W-09R4CBPH2Also listed as DMLHT1W-09R4BBPH2Non-ducted, up to 1.5 tons	beats 91% · 15.0T55-MULTI18E454Also listed as T55-MULTI18E454Non-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 34% · 8,400 Btu/hDMLHT1W-12R4CBPH2Also listed as DMLHT1W-12R4BBPH2Non-ducted, up to 1.5 tons	beats 97% · 19,000 Btu/hT55-MULTI18E454Also listed as T55-MULTI18E454Non-ducted, up to 1.5 tons

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