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MAESTRO heat pump efficiency: 7 outdoor models compared

MAESTRO has 7 heat pump outdoor models certified with this refrigerant group, in 8 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 MAESTRO makes. MAESTRO has no QMID (IRS Qualified Manufacturer ID) on file, so it is not ranked against other manufacturers.

New to heat pump ratings? The Simple view explains them in plain words →

ManufacturerData as of updated · sources

Outdoor models
7
AHRI certifications
8
Efficiency index
31%
Typical model vs same-size, same-type peers (7 models)
Meet CEE 2025
57.1%
4 models

How MAESTRO 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.
MAESTRO against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of MAESTRO’s own modelsMAESTRO is strongest on heating capacity at 5°F (its typical model beats 59% of comparable models) and weakest on COP at 5°F (16%).
  • MAESTRO
  • Middle half of its models
  • Other ranked manufacturers
MAESTRO

Source: AHRI Directory, NEEP · as of

Average peer percentile of MAESTRO’s models
RatingBeats comparable modelsRankRaw median
Efficiency index7 models scored31%Not ranked—
COP at 5°F7 models scored16%Not ranked1.75
Capacity retention at 5°F7 models scored28%Not ranked66%
HSPF27 models scored24%Not ranked8.6
SEER27 models scored34%Not ranked21.0
EER27 models scored44%Not ranked13.0
Heating capacity at 5°F4 models scored59%Not ranked10,750 Btu/h

Standards met

Share of MAESTRO’s models with at least one qualifying certification
StandardShareModels
CEE 2025 Tier 1 (Split ASHP)57.1%4
CEE 2026 Tier 1 (Split ASHP)57.1%4
CEE Advanced Tier (Split ASHP)0%0
Xcel Energy Colorado cold-climate ASHP (2025)42.9%3
DOE Cold Climate Heat Pump Challenge0%0
ENERGY STAR Cold Climate0%0

Sizes and duct types offered

Models per peer group, and how they score against the other models of that group.
MAESTRO’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
  • MAESTRO (median, middle 50%, 10th–90th)
  • All models of the group
Ducted, up to 1.5 tons2.00884 modelsNon-ducted, up to 1.5 tons1.902,417 modelsmedian

Source: AHRI Directory · as of

Share of comparable models beaten, per peer group
Size and duct typeModelsIndexCOP@5°FHSPF2SEER2
Ducted, up to 1.5 tons34%1%2%2%
Non-ducted, up to 1.5 tons452%27%41%58%

Every MAESTRO model in the market

MAESTRO’s 7 models with a known size and duct type, over the shape of the whole catalog.
MAESTRO models by size and ratingColoured: MAESTRO · grey shapes: all 11,475 models · lines: catalog medians by size
  • MAESTRO models
  • Ducted median by size
  • Non-ducted median by size
  • Every model at each size (width = count)
  • Standard threshold

Dots: 7 maestro models, each through its representative certification, in the colour of the rating shown. The grey shapes count all 11,475 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, sizeModels10th pct.25thMedian75th90th
Ducted, 0.5 tons1751.701.851.902.102.26
Ducted, 1 ton3401.851.902.002.402.65
Ducted, 1.5 tons7891.751.852.002.202.55
Ducted, 2 tons7821.731.802.002.102.33
Ducted, 2.5 tons7351.711.801.902.092.48
Ducted, 3 tons6521.681.701.902.062.36
Ducted, 3.5 tons6411.611.801.952.202.50
Ducted, 4 tons3671.701.801.912.022.52
Ducted, 4.5 tons5441.701.801.912.082.34
Ducted, 5 tons251.801.801.901.902.15
Non-ducted, 0.5 tons7171.751.811.972.102.19
Non-ducted, 1 ton1,0641.751.801.902.072.25
Non-ducted, 1.5 tons8861.801.801.872.072.21
Non-ducted, 2 tons5641.801.801.832.042.21
Non-ducted, 2.5 tons2751.801.811.841.862.03
Non-ducted, 3 tons5021.801.801.902.002.09
Non-ducted, 3.5 tons701.821.831.902.002.28
Non-ducted, 4 tons2631.801.801.982.002.10
Non-ducted, 4.5 tons1031.771.771.801.972.02
Non-ducted, 5 tons291.982.002.102.302.47

Source: AHRI Directory · as of

Top MAESTRO 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 3 MAESTRO 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 modelSize · typeCap. 5/47COP@5°FHSPF2Btu/h @5°FSEER2MeetsCombosAHRI ref.Compared withScore
1MA-12CA22SEXTMAESTROwith ductless indoor unit MA-12CA22SINT1 ton12,000 Btu/h · Non-ducted80%1.859.59,60021.0CEE 25CEE 26Xcel1205138202Non-ducted, up to 1.5 tons54.9
2MA-18CA22SEXTMAESTROwith ductless indoor unit MA-18CA22SINT1.5 tons18,000 Btu/h · Non-ducted77%1.878.613,77022.5CEE 25CEE 26Xcel1205138203Non-ducted, up to 1.5 tons43.2
3MA-12CA22EXTMAESTROwith ductless indoor unit MA-12CA22INT1 ton12,000 Btu/h · Non-ducted70%1.759.58,40021.0CEE 25CEE 26Xcel210277944Non-ducted, up to 1.5 tons34.7

All-around best

Top 5 MAESTRO 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 modelSize · typeCap. 5/47COP@5°FHSPF2SEER2EER2MeetsCombosAHRI ref.Compared withScoreHeating halfCooling halfCold-climate score
1MA-12CA22SEXTMAESTROwith ductless indoor unit MA-12CA22SINT1 ton12,000 Btu/h · Non-ducted80%1.859.521.013.0CEE 25CEE 26Xcel1205138202Non-ducted, up to 1.5 tons56.854.958.754.9
2MA-18CA22SEXTMAESTROwith ductless indoor unit MA-18CA22SINT1.5 tons18,000 Btu/h · Non-ducted77%1.878.622.513.0CEE 25CEE 26Xcel1205138203Non-ducted, up to 1.5 tons56.543.269.843.2
3MA-18CA22EXTMAESTROwith ductless indoor unit MA-18CA22INT1.5 tons18,000 Btu/h · Non-ducted66%1.808.622.513.0CEE 25CEE 261205138207Non-ducted, up to 1.5 tons46.823.969.8Not a pick
4MA-12CA22EXTMAESTROwith ductless indoor unit MA-12CA22INT1 ton12,000 Btu/h · Non-ducted70%1.759.521.013.0CEE 25CEE 26Xcel210277944Non-ducted, up to 1.5 tons46.734.758.734.7
52234Maestro0.5 tons6,200 Btu/h · Ducted26%1.506.813.510.8None1214728344Ducted, up to 1.5 tons4.51.27.8Not a pick

Best model on each rating

MAESTRO’s model with the highest peer percentile on each rating, ranked by that one rating only
RatingModelValueCompared withBeatsAHRI ref.
COP at 5°FMA-18CA22SEXT1.87Non-ducted, up to 1.5 tons42%205138203
Capacity retention at 5°FMA-12CA22SEXT80%Non-ducted, up to 1.5 tons67%205138202
HSPF2MA-12CA22EXT9.5Non-ducted, up to 1.5 tons57%10277944
SEER2MA-18CA22SEXT22.5Non-ducted, up to 1.5 tons67%205138203
EER2MA-12CA22EXT13.0Non-ducted, up to 1.5 tons68%10277944
Heating capacity at 5°FMA-18CA22SEXT13,770 Btu/hNon-ducted, up to 1.5 tons83%205138203

All 7 MAESTRO models in Explore

MAESTRO 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.
MAESTRO: 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 typeCold-climate pickCold-climate score, best modelAll-around bestAll-around score, best model
Ducted, up to 1.5 tonsNone on this board (0 of 3 models qualify)4.5(50 is the typical model of its size class)22343 of 3 models have all five ratings · AHRI 214728344
Non-ducted, up to 1.5 tons54.9(50 is the typical model of its size class)MA-12CA22SEXTwith ductless indoor unit MA-12CA22SINT3 of 4 models qualify · AHRI 20513820256.8(50 is the typical model of its size class)MA-12CA22SEXTwith ductless indoor unit MA-12CA22SINT4 of 4 models have all five ratings · AHRI 205138202

All-around board, every manufacturer

Newest MAESTRO certifications

By AHRI reference number; AHRI issues references in increasing order.
The 5 most recently certified MAESTRO outdoor models
Outdoor modelSize · typeCOP@5°FCap. 5/47HSPF2SEER2MeetsCombosAHRI ref.
2234Maestro0.5 tons6,200 Btu/h · Ducted1.5026%6.813.5None1214728344
2283Maestro0.5 tons6,700 Btu/h · Ducted1.5025%6.813.5None1214728343
1925Maestro0.5 tons6,700 Btu/h · Ducted1.5025%6.813.5None1211580587
MA-18CA22EXTMAESTROwith ductless indoor unit MA-18CA22INT1.5 tons18,000 Btu/h · Non-ducted1.8066%8.622.5CEE 25CEE 261205138207
MA-12CA22EXTMAESTROwith ductless indoor unit MA-12CA22INT1 ton12,000 Btu/h · Non-ducted——9.021.0CEE 25CEE 26Xcel2205138206

Shares hardware with

Manufacturers whose models are the same equipment under another badge. About OEM families

No shared hardware found for MAESTRO in this group.

Compare MAESTRO

Manufacturers of a similar size, side by side.

Compare with any manufacturer

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