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MRCOOL heat pump efficiency: 92 outdoor models compared

MRCOOL has 92 heat pump outdoor models certified with this refrigerant group, in 504 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 MRCOOL makes. Ranks are among manufacturers with a QMID on file and at least 10 scored models.

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ManufacturerData as of updated · sources

Outdoor models
92
AHRI certifications
504
Efficiency index
53%
Typical model vs same-size, same-type peers (103 models)
Meet CEE 2025
67.4%
62 models

How MRCOOL 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.
MRCOOL against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of MRCOOL’s own modelsMRCOOL is strongest on HSPF2 (its typical model beats 56% of comparable models) and weakest on EER2 (49%).
  • MRCOOL
  • Middle half of its models
  • Other ranked manufacturers
MRCOOL

Source: AHRI Directory, NEEP · as of

Average peer percentile of MRCOOL’s models
RatingBeats comparable modelsRankRaw median
Efficiency index103 models scored53%17th of 29—
COP at 5°F103 models scored50%19th of 291.99
Capacity retention at 5°F103 models scored50%17th of 2973%
HSPF2110 models scored56%11th of 299.2
SEER2110 models scored54%15th of 2918.8
EER2110 models scored49%17th of 2911.7
Heating capacity at 5°F103 models scored52%16th of 2917,100 Btu/h

Standards met

Share of MRCOOL’s models with at least one qualifying certification
StandardShareModels
CEE 2025 Tier 1 (Split ASHP)67.4%62
CEE 2026 Tier 1 (Split ASHP)66.3%61
CEE Advanced Tier (Split ASHP)0%0
Xcel Energy Colorado cold-climate ASHP (2025)57.6%53
DOE Cold Climate Heat Pump Challenge0%0
ENERGY STAR Cold Climate56.5%52

Sizes and duct types offered

Models per peer group, and how they score against the other models of that group.
MRCOOL’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
  • MRCOOL (median, middle 50%, 10th–90th)
  • 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 modelsNon-ducted, 2.5–3 tons2.001,106 modelsNon-ducted, 3.5–4.5 tons2.00564 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 tons1067%55%67%67%
Ducted, 2 tons1257%50%62%60%
Ducted, 2.5–3 tons1552%42%59%52%
Ducted, 3.5–4.5 tons1954%42%56%52%
Non-ducted, up to 1.5 tons3551%53%59%53%
Non-ducted, 2 tons1047%64%45%45%
Non-ducted, 2.5–3 tons634%38%26%48%
Non-ducted, 3.5–4.5 tons361%47%59%73%

Every MRCOOL model in the market

MRCOOL’s 110 models with a known size and duct type, over the shape of the whole catalog.
MRCOOL models by size and ratingColoured: MRCOOL · grey shapes: all 14,508 models · lines: catalog medians by size
  • MRCOOL models
  • Ducted median by size
  • Non-ducted median by size
  • Every model at each size (width = count)
  • Standard threshold

Dots: 110 mrcool 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 tons8641.701.802.002.102.46
Ducted, 4 tons7271.801.862.002.122.40
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 MRCOOL 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 5 MRCOOL 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
1O-HH-24-HP-C-230C-OMRCOOL · O-HH Serieswith ductless indoor unit CASSETTE24HP-230C-OAlso listed as O-ES-24-HP-C-230C-O12 tons23,400 Btu/h · Non-ducted95%2.2311.623,80020.7CEE 25CEE 26XcelES CC3216032567Non-ducted, 2 tons89.4
2O-ES-24-HP-C-230C-O1MRCOOLwith ducted air handler O-18-HP-WMAH-235C-O2 tons24,000 Btu/h · Ducted92%2.1811.724,00019.0CEE 25CEE 26Xcel4217447812Ducted, 2 tons86.4
3O-HH-24-HP-C-230C-OMRCOOL · O-HH Serieswith ducted air handler DUCT-24HP-230B-O2 tons24,000 Btu/h · Ducted92%2.1811.724,00019.0CEE 25CEE 26XcelES CC3216032568Ducted, 2 tons85.7
4DIYHH-12-HP-C-230D25-OMRCOOL · DIY Serieswith ductless indoor unit DIYCASSETTE12HP-230D25-O1 ton12,000 Btu/h · Non-ducted92%2.1110.811,50022.2CEE 25CEE 26XcelES CC2216032550Non-ducted, up to 1.5 tons80.4
5O-HH-09-HP-C-230C-OMRCOOL · O-HH Serieswith ducted air handler DUCT-09HP-230B-OAlso listed as O-ES-09-HP-C-230C-O11 ton9,000 Btu/h · Ducted112%1.8912.511,20021.4CEE 25CEE 26XcelES CC3216032559Ducted, up to 1.5 tons80.0

All-around best

Top 5 MRCOOL 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
1O-HH-09-HP-C-230C-OMRCOOL · O-HH Serieswith ducted air handler DUCT-09HP-230B-OAlso listed as O-ES-09-HP-C-230C-O11 ton9,000 Btu/h · Ducted112%1.8912.521.413.4CEE 25CEE 26XcelES CC3216032559Ducted, up to 1.5 tons86.780.093.580.0
2MULTI6-48HP230C-OMRCOOL · MULTI Series4 tons45,000 Btu/h · Ducted81%2.1010.620.412.0CEE 25CEE 26XcelES CC3217291702Ducted, 3.5–4.5 tons85.177.992.377.9
3DIY-MULTI6-55HP230D-OMRCOOL · DIY Series4 tons47,000 Btu/h · Ducted84%2.0010.520.012.0CEE 25CEE 26XcelES CC3216032599Ducted, 3.5–4.5 tons81.673.289.973.2
4O-HH-09-HP-C-230C-OMRCOOL · O-HH Serieswith ductless indoor unit O-09-HP-WMAH-230C-OAlso listed as O-ES-09-HP-C-230C-O11 ton9,000 Btu/h · Non-ducted96%1.8012.527.415.4CEE 25CEE 26XcelES CC3216032557Non-ducted, up to 1.5 tons80.665.196.073.3
5DIY-MULTI6-48HP230D-OMRCOOL · DIY Series3.5 tons43,000 Btu/h · Ducted79%2.0010.520.012.0CEE 25CEE 26XcelES CC3216032596Ducted, 3.5–4.5 tons80.270.589.970.5

Best model on each rating

MRCOOL’s model with the highest peer percentile on each rating, ranked by that one rating only
RatingModelValueCompared withBeatsAHRI ref.
COP at 5°FDIY-18-HP-C-230D25-OAlso listed as DIYP-18-HP-C-230DE11-O2.44Non-ducted, up to 1.5 tons98%216032545
Capacity retention at 5°FMDPH18024D126%Ducted, 2 tons99%217905218
HSPF2O-HH-24-HP-C-230C-O13.5Non-ducted, 2 tons98%216032566
SEER2MULTI4-27HP230C-O25.0Non-ducted, 2.5–3 tons97%217291695
EER2O-HH-09-HP-C-230C-OAlso listed as O-ES-09-HP-C-230C-O115.4Non-ducted, up to 1.5 tons95%216032557
Heating capacity at 5°FMDPH18024D30,300 Btu/hDucted, 2 tons99%217905218

All 92 MRCOOL models in Explore

MRCOOL 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.
MRCOOL: 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 tons80.0(50 is the typical model of its size class)O-HH-09-HP-C-230C-Owith ducted air handler DUCT-09HP-230B-OAlso listed as O-ES-09-HP-C-230C-O18 of 10 models qualify · AHRI 21603255986.7(50 is the typical model of its size class)O-HH-09-HP-C-230C-Owith ducted air handler DUCT-09HP-230B-OAlso listed as O-ES-09-HP-C-230C-O19 of 10 models have all five ratings · AHRI 216032559
Ducted, 2 tons86.4(50 is the typical model of its size class)O-ES-24-HP-C-230C-O1with ducted air handler O-18-HP-WMAH-235C-O10 of 12 models qualify · AHRI 21744781278.7(50 is the typical model of its size class)O-ES-24-HP-C-230C-O1with ducted air handler O-18-HP-WMAH-235C-O11 of 12 models have all five ratings · AHRI 217447812
Ducted, 2.5–3 tons77.0(50 is the typical model of its size class)UHP18030-Owith ducted air handler UAH18030 - O9 of 15 models qualify · AHRI 21773032973.4(50 is the typical model of its size class)UHP18030-Owith ducted air handler UAH18030 - O13 of 15 models have all five ratings · AHRI 217730329
Ducted, 3.5–4.5 tons77.9(50 is the typical model of its size class)MULTI6-48HP230C-O13 of 19 models qualify · AHRI 21729170285.1(50 is the typical model of its size class)MULTI6-48HP230C-O16 of 19 models have all five ratings · AHRI 217291702
Non-ducted, up to 1.5 tons80.4(50 is the typical model of its size class)DIYHH-12-HP-C-230D25-Owith ductless indoor unit DIYCASSETTE12HP-230D25-O22 of 35 models qualify · AHRI 21603255080.6(50 is the typical model of its size class)O-HH-09-HP-C-230C-Owith ductless indoor unit O-09-HP-WMAH-230C-OAlso listed as O-ES-09-HP-C-230C-O135 of 35 models have all five ratings · AHRI 216032557
Non-ducted, 2 tons89.4(50 is the typical model of its size class)O-HH-24-HP-C-230C-Owith ductless indoor unit CASSETTE24HP-230C-OAlso listed as O-ES-24-HP-C-230C-O16 of 10 models qualify · AHRI 21603256776.8(50 is the typical model of its size class)O-ES-24-HP-C-230C-O1with ductless indoor unit O-18-HP-WMAH-233C-O10 of 10 models have all five ratings · AHRI 217447810
Non-ducted, 2.5–3 tons41.4(50 is the typical model of its size class)MULTI4-27HP230C-O3 of 6 models qualify · AHRI 21729169566.3(50 is the typical model of its size class)MULTI4-27HP230C-O6 of 6 models have all five ratings · AHRI 217291695
Non-ducted, 3.5–4.5 tons56.1(50 is the typical model of its size class)MULTI6-48HP230C-O3 of 3 models qualify · AHRI 21729170368.6(50 is the typical model of its size class)MULTI6-48HP230C-O3 of 3 models have all five ratings · AHRI 217291703

All-around board, every manufacturer

Newest MRCOOL certifications

By AHRI reference number; AHRI issues references in increasing order.
The 5 most recently certified MRCOOL outdoor models
Outdoor modelSize · typeCOP@5°FCap. 5/47HSPF2SEER2MeetsCombosAHRI ref.
MDM10115DMRCOOL1 ton10,000 Btu/h · Ducted1.8072%7.515.0None1218743763
AEPL**MHV22S2431B1AMRCOOL · TruInverterwith ductless indoor unit AEPL**AWM22E2431B1A2 tons23,000 Btu/h · Non-ducted2.1073%10.023.0CEE 25CEE 26XcelES CC1218451567
AEPL**MHV22S1831B1AMRCOOL · TruInverterwith ductless indoor unit AEPL**AWM22E1831B1A1.5 tons18,000 Btu/h · Non-ducted1.8083%10.024.0CEE 25CEE 26XcelES CC1218451566
AEPL**MHV23S1231B1AMRCOOL · TruInverterwith ductless indoor unit AEPL**AWM23E1231B1A1 ton12,000 Btu/h · Non-ducted1.8083%10.024.0CEE 25CEE 26XcelES CC1218451565
AEPL**MHV23S0931B1AMRCOOL · TruInverterwith ductless indoor unit AEPL**AWM23E0931B1A1 ton9,000 Btu/h · Non-ducted1.8089%9.523.0CEE 25CEE 26XcelES CC1218451564

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