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AUX vs Midea heat pumps

Measured against models of the same size and duct type, Midea scores higher on 5 of the 6 ratings. AUX has 189 outdoor models, Midea has 555 outdoor models.

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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.
AUX and Midea 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, Midea scores higher on 5 of the 6 ratings.
  • AUX
  • Midea
  • Other ranked manufacturers
AUXMidea

Source: AHRI Directory, NEEP · as of

Average peer percentile, raw median and rank among ranked manufacturers
RatingAUXMidea
Efficiency index49%median — · 21st ranked60%median — · 7th ranked
COP at 5°F60%median 2.00 · 7th ranked60%median 2.00 · 8th ranked
Capacity retention at 5°F51%median 75% · 15th ranked57%median 74% · 10th ranked
HSPF240%median 9.0 · 25th ranked66%median 9.5 · 6th ranked
SEER248%median 20.0 · 18th ranked61%median 19.5 · 5th ranked
EER239%median 11.0 · 27th ranked55%median 11.7 · 13th ranked
Heating capacity at 5°F49%median 9,600 Btu/h · 17th ranked60%median 20,000 Btu/h · 10th ranked
Outdoor models189555
AHRI certifications2236,664

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
StandardAUXMidea
CEE 2025 Tier 1 (Split ASHP)68.3%129 models75.3%418 models
CEE 2026 Tier 1 (Split ASHP)66.1%125 models74.2%412 models
CEE Advanced Tier (Split ASHP)1.1%2 models3.4%19 models
Xcel Energy Colorado cold-climate ASHP (2025)65.6%124 models69.7%387 models
DOE Cold Climate Heat Pump Challenge1.1%2 models3.4%19 models
ENERGY STAR Cold Climate34.9%66 models63.8%354 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 · 8 groups where both have models
  • AUX
  • Midea
  • All models of the group
Ducted, up to 1.5 tons1.901,902 modelsDucted, 2 tons2.001,132 modelsDucted, 2.5–3 tons2.002,029 modelsDucted, 3.5–4.5 tons2.002,290 modelsDucted, 5 tons and up2.00341 modelsNon-ducted, up to 1.5 tons1.943,990 modelsNon-ducted, 2 tons2.00987 modelsNon-ducted, 2.5–3 tons2.001,210 modelsNon-ducted, 3.5–4.5 tons2.00591 modelsNon-ducted, 5 tons and up2.0588 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 typeAUXMidea
Ducted, up to 1.5 tons6 · index 60%80 · index 75%
Ducted, 2 tons4 · index 59%57 · index 62%
Ducted, 2.5–3 tons9 · index 63%122 · index 62%
Ducted, 3.5–4.5 tons5 · index 61%110 · index 63%
Ducted, 5 tons and upNone22 · index 63%
Non-ducted, up to 1.5 tons120 · index 46%185 · index 57%
Non-ducted, 2 tons33 · index 52%50 · index 52%
Non-ducted, 2.5–3 tons22 · index 46%94 · index 56%
Non-ducted, 3.5–4.5 tons2 · index 73%64 · index 49%
Non-ducted, 5 tons and upNone15 · index 45%

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 typeAUXCold-climate score, best modelMideaCold-climate score, best model
Ducted, up to 1.5 tons75.4(50 is the typical model of its size class)ASUM18HPMULO6 of 6 models qualify · AHRI 21603243793.7(50 is the typical model of its size class) (higher)37MAHAQ06AA3with ducted air handler 45MBDAQ06XA3Also sold as MDV MOX230-06HFN10-M1X; also listed as D5CSHAH06AAK71 of 81 models qualify · AHRI 215324042
Ducted, 2 tons62.9(50 is the typical model of its size class)ASUM24HPMULO4 of 4 models qualify · AHRI 21603243885.9(50 is the typical model of its size class) (higher)37MAHAQ24AA3with ducted air handler 45MBDAQ24XH3Also sold as MDV MOD30-24HFN10-M1X; also listed as D5CSHAH24AAK49 of 54 models qualify · AHRI 215324061
Ducted, 2.5–3 tons73.8(50 is the typical model of its size class)ASPR30HPMULO6 of 9 models qualify · AHRI 21603240090.4(50 is the typical model of its size class) (higher)M4OD31-27HFN8-M1XD92 of 126 models qualify · AHRI 218083250
Ducted, 3.5–4.5 tons77.1(50 is the typical model of its size class)ASUM42HPMULO5 of 5 models qualify · AHRI 21603244083.9(50 is the typical model of its size class) (higher)MOVA-60HDN10-M20Gwith ducted air handler MVME60C2MN10TAAlso listed as MOVC-60HDN10-M20G91 of 106 models qualify · AHRI 214814477
Ducted, 5 tons and upNo models in this size class66.9(50 is the typical model of its size class)MDV-V60WMN10TAlso listed as MDV-V60WMN10T(B)6 of 24 models qualify · AHRI 216021062
Non-ducted, up to 1.5 tons83.5(50 is the typical model of its size class)AM2-H18/2DR3BAlso listed as ASUM18HPMULO80 of 120 models qualify · AHRI 21409794097.7(50 is the typical model of its size class) (higher)MOX230-06HFN10-M1with ductless indoor unit MSEPB-06HRFN10-M1125 of 185 models qualify · AHRI 215865890
Non-ducted, 2 tons84.6(50 is the typical model of its size class)AM3-H24/2DR3BAlso listed as ASUM24HPMULO16 of 33 models qualify · AHRI 21409794390.0(50 is the typical model of its size class) (higher)37MAHAQ24AA3with ductless indoor unit 45MBCAQ24XA3Also sold as MDV MOD30-24HFN10-M1X; also listed as D5CSHAH24AAK44 of 50 models qualify · AHRI 215324059
Non-ducted, 2.5–3 tons73.4(50 is the typical model of its size class)AM4-H36/2DR3BAlso listed as ASUM36HPMULO18 of 22 models qualify · AHRI 21409794189.3(50 is the typical model of its size class) (higher)37MBHAQ36AA3with ductless indoor unit 45MCFAQ36XA3Also sold as MDV MOX630-36HFN10-M2X; also listed as D5CLHAH36AAK78 of 94 models qualify · AHRI 215324087
Non-ducted, 3.5–4.5 tons60.1(50 is the typical model of its size class)ASUM42HPMULO2 of 2 models qualify · AHRI 21605094275.6(50 is the typical model of its size class) (higher)D5CMHAH48FAKAlso sold as MDV M6OE31-48HFN10-M1XD, MDV M6OE31-48HFN10-M1X; also listed as 37MGHAQ48FA357 of 64 models qualify · AHRI 215357417
Non-ducted, 5 tons and upNo models in this size class51.9(50 is the typical model of its size class)MDV-V60WMN10TAlso listed as MDV-V60WMN10T(B)3 of 15 models qualify · AHRI 216021081

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 typeAUXAll-around score, best modelMideaAll-around score, best model
Ducted, up to 1.5 tons79.8(50 is the typical model of its size class)ASUM18HPMULO6 of 6 models have all five ratings · AHRI 21603243795.7(50 is the typical model of its size class) (higher)37MAHAQ06AA3with ducted air handler 45MBDAQ06XA3Also sold as MDV MOX230-06HFN10-M1X; also listed as D5CSHAH06AAK83 of 83 models have all five ratings · AHRI 215324042
Ducted, 2 tons78.2(50 is the typical model of its size class)ASUM24HPMULO4 of 4 models have all five ratings · AHRI 21603243890.1(50 is the typical model of its size class) (higher)MOD30-24HFN10-M1Hwith ducted air handler MSEPD-24HRFN10-M1H53 of 53 models have all five ratings · AHRI 217998293
Ducted, 2.5–3 tons81.4(50 is the typical model of its size class)ASUM36HPMULO9 of 9 models have all five ratings · AHRI 21603243991.8(50 is the typical model of its size class) (higher)M4OD31-27HFN8-M1XD123 of 123 models have all five ratings · AHRI 218083250
Ducted, 3.5–4.5 tons87.2(50 is the typical model of its size class) (higher)ASUM42HPMULO5 of 5 models have all five ratings · AHRI 21603244086.0(50 is the typical model of its size class)D5CMRAH48FAKAlso sold as MDV M6OE30-48HFN10-M1D, MDV M6OE30-48HFN10-M1; also listed as 37MGRAQ48FA3110 of 110 models have all five ratings · AHRI 215357445
Ducted, 5 tons and upNo models in this size class70.5(50 is the typical model of its size class)MRD-60HWD1N10-M18GAlso listed as MRD-60HWD1N10-M18GB22 of 22 models have all five ratings · AHRI 215894250
Non-ducted, up to 1.5 tons84.2(50 is the typical model of its size class)ASW-H18E3B2/*R3DI-D2with ductless indoor unit ASW-H18E3B2/*R3DI-D2Also listed as ASW-H18E3B2/**R3DI-D2102 of 120 models have all five ratings · AHRI 21521892896.8(50 is the typical model of its size class) (higher)37MAHAQ06AA3with ductless indoor unit D5MAHAQ06XA3Also sold as MDV MOX230-06HFN10-M1X; also listed as D5CSHAH06AAK176 of 185 models have all five ratings · AHRI 215323786
Non-ducted, 2 tons87.0(50 is the typical model of its size class)ASW-H24F6A2/ *R3DI-D7with ductless indoor unit ASW-H24F6A2/ *R3DI-D7Also listed as ASW-H24F6A2/**R3DI-D729 of 33 models have all five ratings · AHRI 21711527489.3(50 is the typical model of its size class) (higher)37MARAQ24AA3with ductless indoor unit D5MAHAQ24XA3Also sold as MDV MOD30-24HFN10-M1; also listed as D5CSRAH24AAK46 of 50 models have all five ratings · AHRI 215323796
Non-ducted, 2.5–3 tons78.5(50 is the typical model of its size class)AM4-H36/2DR3BAlso listed as ASUM36HPMULO18 of 22 models have all five ratings · AHRI 21409794189.3(50 is the typical model of its size class) (higher)M4OD31-27HFN8-M1XD93 of 94 models have all five ratings · AHRI 218083249
Non-ducted, 3.5–4.5 tons74.4(50 is the typical model of its size class)ASUM42HPMULO2 of 2 models have all five ratings · AHRI 21605094276.6(50 is the typical model of its size class) (higher)D5CMHAH48FAKAlso sold as MDV M6OE31-48HFN10-M1XD, MDV M6OE31-48HFN10-M1X; also listed as 37MGHAQ48FA363 of 64 models have all five ratings · AHRI 215357415
Non-ducted, 5 tons and upNo models in this size class61.5(50 is the typical model of its size class)D5CMRAH55FAKAlso sold as MDV M6OE30-60HFN10-M1D, MDV M6OE30-60HFN10-M1; also listed as 37MGRAQ55FA315 of 15 models have all five ratings · AHRI 215357450

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
RatingAUXMidea
COP at 5°Fbeats 100% · 2.52AFEB09HP115V1CONon-ducted, up to 1.5 tonsbeats 99% · 2.5137MARAQ12AA3Also sold as MDV MOX230-12HFN10-M1; also listed as D5CSRAH12AAKNon-ducted, up to 1.5 tons
Capacity retention at 5°Fbeats 99% · 108%AM3-H24/2DR3BAlso listed as ASUM24HPMULONon-ducted, 2 tonsbeats 100% · 150%37MPRAQ06AA3Also sold as MDV MOX430-06HFN10-M1HNon-ducted, up to 1.5 tons
HSPF2beats 96% · 11.0AM4-H36/2DR3BAlso listed as ASUM36HPMULONon-ducted, 2.5–3 tonsbeats 100% · 15.637MPRAQ06AA3Also sold as MDV MOX430-06HFN10-M1HNon-ducted, up to 1.5 tons
SEER2beats 100% · 22.0ASUM42HPMULODucted, 3.5–4.5 tonsbeats 100% · 27.0MOX430-15HFN10-M1HDucted, up to 1.5 tons
EER2beats 97% · 14.0AMAR24HP230V1CONon-ducted, 2 tonsbeats 100% · 18.1MOX230-06HFN10-M1Non-ducted, up to 1.5 tons
Heating capacity at 5°Fbeats 99% · 21,800 Btu/hAM2-H18/2DR3BAlso listed as ASUM18HPMULONon-ducted, up to 1.5 tonsbeats 100% · 55,000 Btu/hMOVA-60HDN10-M20GAlso listed as MOVC-60HDN10-M20GDucted, 3.5–4.5 tons

In the cold

NEEP cold-climate listings of both manufacturers against all listed models.
AUX vs Midea: capacity and COP from 47°F downNEEP cold-climate listings at maximum capacity · 6,130 models (45.8% of the catalog) have ratings at 47, 17 and 5°F
  • All listed models (median, middle 50% and 80%)
  • AUX (median, middle 50%)
  • Midea (median, middle 50%)
Heating capacity, % of its 47°F maximum70%66%COP at maximum capacity2.002.00

One curve per model: its NEEP-rated certification with the best 5°F COP. Every point of a curve is over the same models. NEEP lists only models submitted to it, so this is a cold-climate-leaning subset, not the whole catalog.
Show the data as a table
All listed models: capacity, % of its 47°F maximum
Scope, temperatureModels10th pct.25thMedian75th90th
All rated models, 47°F6,130100%100%100%100%100%
All rated models, 17°F6,13064%69%74%83%91%
All rated models, 5°F6,13057%61%69%77%83%
All listed models: COP at maximum capacity
Scope, temperatureModels10th pct.25thMedian75th90th
All rated models, 47°F6,1302.83.013.243.483.66
All rated models, 17°F6,13022.142.32.422.61
All rated models, 5°F6,1301.81.8722.12.24
AUX: capacity, % of its 47°F maximum
Scope, temperatureModels10th pct.25thMedian75th90th
AUX, 47°F65100%100%100%100%100%
AUX, 17°F6567%70%73%79%85%
AUX, 5°F6562%65%70%73%83%
AUX: COP at maximum capacity
Scope, temperatureModels10th pct.25thMedian75th90th
AUX, 47°F652.933.183.33.523.72
AUX, 17°F652.12.172.282.342.45
AUX, 5°F651.89222.12.18
Midea: capacity, % of its 47°F maximum
Scope, temperatureModels10th pct.25thMedian75th90th
Midea, 47°F502100%100%100%100%100%
Midea, 17°F50264%68%73%81%85%
Midea, 5°F50257%62%66%77%82%
Midea: COP at maximum capacity
Scope, temperatureModels10th pct.25thMedian75th90th
Midea, 47°F5022.883.13.243.493.61
Midea, 17°F5022.12.222.32.492.62
Midea, 5°F5021.851.9922.112.31

Source: NEEP ccASHP list · as of

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