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Air Tempo vs MITS AIR heat pumps

Measured against models of the same size and duct type, Air Tempo and MITS AIR split the 6 ratings 3–3. Air Tempo has 6 outdoor models, MITS AIR has 6 outdoor models. Air Tempo and MITS AIR have no QMID on file and are not ranked.

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CompareData as of updated · 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.
Air Tempo and MITS 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, Air Tempo and MITS AIR split the 6 ratings 3–3.
  • Air Tempo
  • MITS AIR
  • Other ranked manufacturers
Air TempoMITS AIR

Source: AHRI Directory, NEEP · as of

Average peer percentile, raw median and rank among ranked manufacturers
RatingAir TempoMITS AIR
Efficiency index64% (higher)median —58% (higher)median —
COP at 5°F18%median 1.8042%median 1.90
Capacity retention at 5°F86% (higher)median 99%80% (higher)median 93%
HSPF272%median 10.076%median 9.8
SEER278% (higher)median 23.555% (higher)median 16.7
EER260% (higher)median 12.547% (higher)median 11.7
Heating capacity at 5°F81%median 17,800 Btu/h84%median 35,800 Btu/h
Outdoor models66
AHRI certifications620

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
StandardAir TempoMITS AIR
CEE 2025 Tier 1 (Split ASHP)100%6 models100%6 models
CEE 2026 Tier 1 (Split ASHP)100%6 models100%6 models
CEE Advanced Tier (Split ASHP)0%0 models0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)100%6 models100%6 models
DOE Cold Climate Heat Pump Challenge0%0 models0%0 models
ENERGY STAR Cold Climate100%6 models100%6 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 · 0 groups where both have models
  • Air Tempo
  • MITS AIR
  • All models of the group
Ducted, up to 1.5 tons1.901,783 modelsDucted, 2 tons2.001,090 modelsDucted, 2.5–3 tons2.001,909 modelsDucted, 3.5–4.5 tons2.002,224 modelsNon-ducted, up to 1.5 tons1.953,455 modelsNon-ducted, 2 tons2.00863 modelsmedian

Raw ratings are only placed side by side within one size and duct type, where they are comparable.

Source: AHRI Directory · as of

Models per peer group · efficiency index within the group
Size and duct typeAir TempoMITS AIR
Ducted, up to 1.5 tonsNone1 · index 63%
Ducted, 2 tonsNone1 · index 61%
Ducted, 2.5–3 tonsNone2 · index 65%
Ducted, 3.5–4.5 tonsNone2 · index 48%
Non-ducted, up to 1.5 tons4 · index 68%None
Non-ducted, 2 tons2 · index 56%None

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 typeAir TempoCold-climate score, best modelMITS AIRCold-climate score, best model
Ducted, up to 1.5 tonsNo models in this size class72.8(50 is the typical model of its size class)MAMOX430-18HFN10-M3Xwith ducted air handler MAMVBM-24A18T3N101 of 1 models qualify · AHRI 216621516
Ducted, 2 tonsNo models in this size class66.3(50 is the typical model of its size class)MAMOX430-24HFN10-M3Xwith ducted air handler MAMVBC-24HWFN10-MB3E-D1 of 1 models qualify · AHRI 216621511
Ducted, 2.5–3 tonsNo models in this size class73.1(50 is the typical model of its size class)MAMOX630-36HFN10-M3Xwith ducted air handler MAMVBC-36HWFN10-MC3E-D2 of 2 models qualify · AHRI 216621513
Ducted, 3.5–4.5 tonsNo models in this size class68.8(50 is the typical model of its size class)MAMOX630-48HFN10-M3Xwith ducted air handler MAMVBC-48HWFN10-MD3E-D2 of 2 models qualify · AHRI 216621514
Non-ducted, up to 1.5 tons62.1(50 is the typical model of its size class)ATCB12K454B-Owith ductless indoor unit ATCB12K454B-IAlso listed as ATCB12K454B-O4 of 4 models qualify · AHRI 218472383No models in this size class
Non-ducted, 2 tons58.0(50 is the typical model of its size class)ATCB24K454B-Owith ductless indoor unit ATCB24K454B-IAlso listed as ATCB24K454B-O2 of 2 models qualify · AHRI 218472385No models in this size class

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 typeAir TempoAll-around score, best modelMITS AIRAll-around score, best model
Ducted, up to 1.5 tonsNo models in this size class71.7(50 is the typical model of its size class)MAMOX430-18HFN10-M3Xwith ducted air handler MAMVBC-18HWFN10-MB3E-D1 of 1 models have all five ratings · AHRI 216621510
Ducted, 2 tonsNo models in this size class61.0(50 is the typical model of its size class)MAMOX430-24HFN10-M3Xwith ducted air handler MAMVBC-24HWFN10-MB3E-D1 of 1 models have all five ratings · AHRI 216621511
Ducted, 2.5–3 tonsNo models in this size class67.3(50 is the typical model of its size class)MAMOX630-36HFN10-M3Xwith ducted air handler MAMVBC-36HWFN10-MC3E-D2 of 2 models have all five ratings · AHRI 216621513
Ducted, 3.5–4.5 tonsNo models in this size class57.1(50 is the typical model of its size class)MAMOX630-48HFN10-M3Xwith ducted air handler MAMVBC-48HWFN10-MD3E-D2 of 2 models have all five ratings · AHRI 216621514
Non-ducted, up to 1.5 tons74.4(50 is the typical model of its size class)ATCB12K454B-Owith ductless indoor unit ATCB12K454B-IAlso listed as ATCB12K454B-O4 of 4 models have all five ratings · AHRI 218472383No models in this size class
Non-ducted, 2 tons56.1(50 is the typical model of its size class)ATCB24K454B-Owith ductless indoor unit ATCB24K454B-IAlso listed as ATCB24K454B-O2 of 2 models have all five ratings · AHRI 218472385No models in this size class

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
RatingAir TempoMITS AIR
COP at 5°Fbeats 19% · 1.80ATCB12K454B-OAlso listed as ATCB12K454B-ONon-ducted, up to 1.5 tonsbeats 72% · 2.06MAMOX430-18HFN10-M3XDucted, up to 1.5 tons
Capacity retention at 5°Fbeats 87% · 100%ATCB12K454B-OAlso listed as ATCB12K454B-ONon-ducted, up to 1.5 tonsbeats 97% · 107%MAMOD30-30HFN10-M3XDucted, 2.5–3 tons
HSPF2beats 79% · 10.5ATCB12K454B-OAlso listed as ATCB12K454B-ONon-ducted, up to 1.5 tonsbeats 91% · 10.3MAMOX630-36HFN10-M3XDucted, 2.5–3 tons
SEER2beats 84% · 25.0ATCB12K454B-OAlso listed as ATCB12K454B-ONon-ducted, up to 1.5 tonsbeats 66% · 19.0MAMOX430-18HFN10-M3XDucted, up to 1.5 tons
EER2beats 83% · 14.0ATCB12K454B-OAlso listed as ATCB12K454B-ONon-ducted, up to 1.5 tonsbeats 76% · 12.5MAMOX430-18HFN10-M3XDucted, up to 1.5 tons
Heating capacity at 5°Fbeats 90% · 17,800 Btu/hATCB18K454B-OAlso listed as ATCB18K454B-ONon-ducted, up to 1.5 tonsbeats 97% · 39,000 Btu/hMAMOX630-36HFN10-M3XDucted, 2.5–3 tons

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