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COMFORT MASTER heat pump efficiency: 6 outdoor models compared

COMFORT MASTER has 6 heat pump outdoor models certified with this refrigerant group, in 6 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 COMFORT MASTER makes. COMFORT MASTER has no QMID (IRS Qualified Manufacturer ID) on file, so it is not ranked against other manufacturers.

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ManufacturerData as of updated · sources

Outdoor models
6
AHRI certifications
6
Efficiency index
73%
Typical model vs same-size, same-type peers (4 models)
Meet CEE 2025
66.7%
4 models

How COMFORT MASTER 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.
COMFORT MASTER against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of COMFORT MASTER’s own modelsCOMFORT MASTER is strongest on COP at 5°F (its typical model beats 84% of comparable models) and weakest on heating capacity at 5°F (42%).
  • COMFORT MASTER
  • Middle half of its models
  • Other ranked manufacturers
COMFORT …

Source: AHRI Directory, NEEP · as of

Average peer percentile of COMFORT MASTER’s models
RatingBeats comparable modelsRankRaw median
Efficiency index4 models scored73%Not ranked—
COP at 5°F6 models scored84%Not ranked2.16
Capacity retention at 5°F4 models scored58%Not ranked79%
HSPF26 models scored50%Not ranked10.0
SEER26 models scored58%Not ranked24.0
EER26 models scored49%Not ranked12.0
Heating capacity at 5°F6 models scored42%Not ranked9,100 Btu/h

Standards met

Share of COMFORT MASTER’s models with at least one qualifying certification
StandardShareModels
CEE 2025 Tier 1 (Split ASHP)66.7%4
CEE 2026 Tier 1 (Split ASHP)66.7%4
CEE Advanced Tier (Split ASHP)0%0
Xcel Energy Colorado cold-climate ASHP (2025)66.7%4
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.
COMFORT MASTER’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
  • COMFORT MASTER (median, middle 50%, 10th–90th)
  • All models of the group
Non-ducted, up to 1.5 tons1.953,455 modelsNon-ducted, 2 tons2.00863 modelsNon-ducted, 2.5–3 tons2.001,106 modelsmedian

Source: AHRI Directory · as of

Share of comparable models beaten, per peer group
Size and duct typeModelsIndexCOP@5°FHSPF2SEER2
Non-ducted, up to 1.5 tons369%81%71%82%
Non-ducted, 2 tons187%71%85%95%
Non-ducted, 2.5–3 tons2—96%2%3%

Every COMFORT MASTER model in the market

COMFORT MASTER’s 6 models with a known size and duct type, over the shape of the whole catalog.
COMFORT MASTER models by size and ratingColoured: COMFORT MASTER · grey shapes: all 14,508 models · lines: catalog medians by size
  • COMFORT MASTER models
  • Ducted median by size
  • Non-ducted median by size
  • Every model at each size (width = count)
  • Standard threshold

Dots: 6 comfort master models, each through its representative certification, in the colour of the rating shown. The grey shapes count all 14,508 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 tons8261.641.711.751.852.24
Ducted, 1 ton4071.801.902.052.412.45
Ducted, 1.5 tons9921.751.862.002.172.40
Ducted, 2 tons9991.751.862.002.182.30
Ducted, 2.5 tons1,0401.701.802.002.102.36
Ducted, 3 tons6961.801.902.002.102.42
Ducted, 3.5 tons8651.701.802.002.102.46
Ducted, 4 tons7261.801.862.002.122.41
Ducted, 4.5 tons6901.701.801.902.102.20
Ducted, 5 tons861.892.002.102.102.10
Non-ducted, 0.5 tons1,1861.751.801.902.002.22
Non-ducted, 1 ton1,3431.801.801.992.102.21
Non-ducted, 1.5 tons1,2611.801.802.002.102.31
Non-ducted, 2 tons7611.801.982.002.102.30
Non-ducted, 2.5 tons4031.801.852.002.002.10
Non-ducted, 3 tons4731.901.982.002.032.20
Non-ducted, 3.5 tons2802.002.002.002.052.10
Non-ducted, 4 tons2041.962.002.052.102.11
Non-ducted, 4.5 tons781.901.911.952.012.01
Non-ducted, 5 tons841.992.002.052.202.20

Source: AHRI Directory · as of

Top COMFORT MASTER 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 4 COMFORT MASTER 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
1CMDI18K-C2-OCOMFORT MASTERwith ductless indoor unit CMDI18K-C2-I1.5 tons18,000 Btu/h · Non-ducted82%2.2510.515,00025.0CEE 25CEE 26Xcel1217619868Non-ducted, up to 1.5 tons79.3
2CMDI24K-C2-OCOMFORT MASTERwith ductless indoor unit CMDI24K-C2-I2 tons22,400 Btu/h · Non-ducted85%2.1010.520,40025.0CEE 25CEE 26Xcel1217619869Non-ducted, 2 tons77.4
3CMDI12K-C1-OCOMFORT MASTERwith ductless indoor unit CMDI12K-C1-I1 ton12,000 Btu/h · Non-ducted76%2.1010.09,30024.0CEE 25CEE 26Xcel1217619866Non-ducted, up to 1.5 tons64.1
4CMDI12K-C2-OCOMFORT MASTERwith ductless indoor unit CMDI12K-C2-I1 ton12,000 Btu/h · Non-ducted72%2.1010.08,90024.0CEE 25CEE 26Xcel1217619867Non-ducted, up to 1.5 tons60.0

All-around best

Top 4 COMFORT MASTER 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
1CMDI24K-C2-OCOMFORT MASTERwith ductless indoor unit CMDI24K-C2-I2 tons22,400 Btu/h · Non-ducted85%2.1010.525.014.0CEE 25CEE 26Xcel1217619869Non-ducted, 2 tons86.577.495.677.4
2CMDI18K-C2-OCOMFORT MASTERwith ductless indoor unit CMDI18K-C2-I1.5 tons18,000 Btu/h · Non-ducted82%2.2510.525.014.0CEE 25CEE 26Xcel1217619868Non-ducted, up to 1.5 tons83.079.386.779.3
3CMDI12K-C1-OCOMFORT MASTERwith ductless indoor unit CMDI12K-C1-I1 ton12,000 Btu/h · Non-ducted76%2.1010.024.012.0CEE 25CEE 26Xcel1217619866Non-ducted, up to 1.5 tons62.864.161.564.1
4CMDI12K-C2-OCOMFORT MASTERwith ductless indoor unit CMDI12K-C2-I1 ton12,000 Btu/h · Non-ducted72%2.1010.024.012.0CEE 25CEE 26Xcel1217619867Non-ducted, up to 1.5 tons60.760.061.560.0

Best model on each rating

COMFORT MASTER’s model with the highest peer percentile on each rating, ranked by that one rating only
RatingModelValueCompared withBeatsAHRI ref.
COP at 5°FCMBI36K-C2Also listed as CMBI36K-C2-O2.21Non-ducted, 2.5–3 tons96%214665263
Capacity retention at 5°FCMDI24K-C2-O85%Non-ducted, 2 tons73%217619869
HSPF2CMDI24K-C2-O10.5Non-ducted, 2 tons84%217619869
SEER2CMDI24K-C2-O25.0Non-ducted, 2 tons95%217619869
EER2CMDI24K-C2-O14.0Non-ducted, 2 tons96%217619869
Heating capacity at 5°FCMDI18K-C2-O15,000 Btu/hNon-ducted, up to 1.5 tons86%217619868

All 6 COMFORT MASTER models in Explore

COMFORT MASTER 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.
COMFORT MASTER: 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
Non-ducted, up to 1.5 tons79.3(50 is the typical model of its size class)CMDI18K-C2-Owith ductless indoor unit CMDI18K-C2-I3 of 3 models qualify · AHRI 21761986883.0(50 is the typical model of its size class)CMDI18K-C2-Owith ductless indoor unit CMDI18K-C2-I3 of 3 models have all five ratings · AHRI 217619868
Non-ducted, 2 tons77.4(50 is the typical model of its size class)CMDI24K-C2-Owith ductless indoor unit CMDI24K-C2-I1 of 1 models qualify · AHRI 21761986986.5(50 is the typical model of its size class)CMDI24K-C2-Owith ductless indoor unit CMDI24K-C2-I1 of 1 models have all five ratings · AHRI 217619869
Non-ducted, 2.5–3 tonsNone on this board (0 of 2 models qualify)None on this board (0 of 2 models have all five ratings)

All-around board, every manufacturer

Newest COMFORT MASTER certifications

By AHRI reference number; AHRI issues references in increasing order.
The 5 most recently certified COMFORT MASTER outdoor models
Outdoor modelSize · typeCOP@5°FCap. 5/47HSPF2SEER2MeetsCombosAHRI ref.
CMBI36K-C2-OCOMFORT MASTERwith ductless indoor unit CMBI36K-C2-I3 tons34,000 Btu/h · Non-ducted2.21—8.017.0None1217619883
CMDI24K-C2-OCOMFORT MASTERwith ductless indoor unit CMDI24K-C2-I2 tons22,400 Btu/h · Non-ducted2.1085%10.525.0CEE 25CEE 26Xcel1217619869
CMDI18K-C2-OCOMFORT MASTERwith ductless indoor unit CMDI18K-C2-I1.5 tons18,000 Btu/h · Non-ducted2.2582%10.525.0CEE 25CEE 26Xcel1217619868
CMDI12K-C2-OCOMFORT MASTERwith ductless indoor unit CMDI12K-C2-I1 ton12,000 Btu/h · Non-ducted2.1072%10.024.0CEE 25CEE 26Xcel1217619867
CMDI12K-C1-OCOMFORT MASTERwith ductless indoor unit CMDI12K-C1-I1 ton12,000 Btu/h · Non-ducted2.1076%10.024.0CEE 25CEE 26Xcel1217619866

Shares hardware with

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

No shared hardware found for COMFORT MASTER in this group.

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