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MRCOOL heat pump efficiency: 111 outdoor models compared

MRCOOL has 111 heat pump outdoor models certified with this refrigerant group, in 361 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
111
AHRI certifications
361
Efficiency index
54%
Typical model vs same-size, same-type peers (85 models)
Meet CEE 2025
46.8%
52 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 EER2 (its typical model beats 56% of comparable models) and weakest on capacity retention at 5°F (41%).
  • 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 index85 models scored54%15th of 27—
COP at 5°F85 models scored49%18th of 271.94
Capacity retention at 5°F85 models scored41%24th of 2764%
HSPF2118 models scored51%15th of 278.6
SEER2118 models scored50%12th of 2716.6
EER2118 models scored56%12th of 2711.7
Heating capacity at 5°F85 models scored43%21st of 2717,800 Btu/h

Standards met

Share of MRCOOL’s models with at least one qualifying certification
StandardShareModels
CEE 2025 Tier 1 (Split ASHP)46.8%52
CEE 2026 Tier 1 (Split ASHP)43.2%48
CEE Advanced Tier (Split ASHP)0%0
Xcel Energy Colorado cold-climate ASHP (2025)25.2%28
DOE Cold Climate Heat Pump Challenge0%0
ENERGY STAR Cold Climate22.5%25

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 tons2.00884 modelsDucted, 2 tons2.00821 modelsDucted, 2.5–3 tons1.901,614 modelsDucted, 3.5–4.5 tons1.911,492 modelsDucted, 5 tons and up1.90239 modelsNon-ducted, up to 1.5 tons1.902,417 modelsNon-ducted, 2 tons1.87611 modelsNon-ducted, 2.5–3 tons1.85975 modelsNon-ducted, 3.5–4.5 tons1.97438 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 tons855%67%49%36%
Ducted, 2 tons1357%41%51%50%
Ducted, 2.5–3 tons2455%51%45%50%
Ducted, 3.5–4.5 tons2755%42%49%44%
Ducted, 5 tons and up441%47%60%24%
Non-ducted, up to 1.5 tons2356%54%64%64%
Non-ducted, 2 tons756%59%62%58%
Non-ducted, 2.5–3 tons1045%42%35%48%
Non-ducted, 3.5–4.5 tons249%22%20%76%

Every MRCOOL model in the market

MRCOOL’s 118 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 11,475 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: 118 mrcool 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 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-ES-09-HP-C-230BMRCOOL · O-serieswith ductless indoor unit O-09-HP-WMAH-230B1 ton9,000 Btu/h · Non-ducted86%2.1912.38,58125.5CEE 25CEE 26XcelES CC1208552810Non-ducted, up to 1.5 tons86.0
2O-HH-24-HP-C-230AMRCOOL · O-serieswith ductless indoor unit O-24-HP-WMAH-230BAlso listed as O-HH-24-HP-C-230B2 tons24,000 Btu/h · Non-ducted86%2.2111.425,00021.5CEE 25CEE 26XcelES CC1207339164Non-ducted, 2 tons84.5
3CENTRAL-60-HP-C-230A00MRCOOL · CENTRAL SERIESwith ducted air handler CENTRAL-60-HP-MUAH230A004.5 tons55,000 Btu/h · Ducted92%1.919.454,35615.3ES CC1210279124Ducted, 3.5–4.5 tons77.1
4O-HH-09-HP-C-230AMRCOOL · O-serieswith ductless indoor unit O-09-HP-WMAH-230BAlso listed as O-HH-09-HP-C-230B1 ton9,000 Btu/h · Non-ducted88%1.9711.510,60028.1CEE 25CEE 26XcelES CC1207339161Non-ducted, up to 1.5 tons76.2
5CENTRAL-36-HP-C-230A00MRCOOL · CENTRAL SERIESwith ducted air handler CENTRAL-36-HP-MUAH230A003 tons36,000 Btu/h · Ducted99%1.869.539,55516.0CEE 25CEE 26XcelES CC1210279122Ducted, 2.5–3 tons74.8

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-ES-09-HP-C-230BMRCOOL · O-serieswith ductless indoor unit O-09-HP-WMAH-230B1 ton9,000 Btu/h · Non-ducted86%2.1912.325.515.0CEE 25CEE 26XcelES CC1208552810Non-ducted, up to 1.5 tons88.486.090.886.0
2O-HH-09-HP-C-230AMRCOOL · O-serieswith ductless indoor unit O-09-HP-WMAH-230BAlso listed as O-HH-09-HP-C-230B1 ton9,000 Btu/h · Non-ducted88%1.9711.528.116.2CEE 25CEE 26XcelES CC1207339161Non-ducted, up to 1.5 tons87.076.297.976.2
3O-HH-24-HP-C-230AMRCOOL · O-serieswith ductless indoor unit O-24-HP-WMAH-230BAlso listed as O-HH-24-HP-C-230B2 tons24,000 Btu/h · Non-ducted86%2.2111.421.513.0CEE 25CEE 26XcelES CC1207339164Non-ducted, 2 tons84.384.584.184.5
4MULTI3-27HP230BMRCOOL · MULTI2.5 tons28,000 Btu/h · Non-ducted68%2.009.524.612.7CEE 25CEE 263208552834Non-ducted, 2.5–3 tons78.261.694.7Not a pick
5O-ES-12-HP-C-230BMRCOOL · O-serieswith ductless indoor unit O-12-HP-WMAH-230B1 ton12,000 Btu/h · Non-ducted67%2.3910.724.613.7CEE 25CEE 261208552813Non-ducted, up to 1.5 tons77.970.885.0Not a pick

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°FO-ES-12-HP-C-230B2.39Non-ducted, up to 1.5 tons97%208552813
Capacity retention at 5°FMDPH18048498%Ducted, 3.5–4.5 tons97%214097892
HSPF2DIY-MULTI5-48HP230C9.8Ducted, 3.5–4.5 tons98%208959768
SEER2MULTI3-27HP230B24.6Non-ducted, 2.5–3 tons99%208552834
EER2MHP17024A-**A14.0Ducted, 2 tons99%211735228
Heating capacity at 5°FCENTRAL-60-HP-C-230A0054,356 Btu/hDucted, 3.5–4.5 tons99%210279124

All 111 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 tons73.5(50 is the typical model of its size class)DIYH-18-HP-C-230C25with ducted air handler DIYH-18-HP-MUAH-230C252 of 8 models qualify · AHRI 21029592659.4(50 is the typical model of its size class)MULTI2-18HP230B4 of 8 models have all five ratings · AHRI 208552830
Ducted, 2 tons69.5(50 is the typical model of its size class)CENTRAL-24-HP-C-230A00with ducted air handler CENTRAL-24-HP-MUAH230A005 of 11 models qualify · AHRI 21149715168.2(50 is the typical model of its size class)DIYH-24-HP-C-230C25with ducted air handler DIYH-24-HP-MUAH-230C2510 of 13 models have all five ratings · AHRI 210288098
Ducted, 2.5–3 tons74.8(50 is the typical model of its size class)CENTRAL-36-HP-C-230A00with ducted air handler CENTRAL-36-HP-MUAH230A006 of 26 models qualify · AHRI 21027912275.4(50 is the typical model of its size class)MULTI3-27HP230B14 of 24 models have all five ratings · AHRI 208552953
Ducted, 3.5–4.5 tons77.1(50 is the typical model of its size class)CENTRAL-60-HP-C-230A00with ducted air handler CENTRAL-60-HP-MUAH230A006 of 27 models qualify · AHRI 21027912469.0(50 is the typical model of its size class)MHP17048A-**Awith indoor coil MCHP51CNPA*+TDR+TXV and furnace MGM80SE090C5A16 of 27 models have all five ratings · AHRI 211737253
Ducted, 5 tons and upNone on this board (0 of 4 models qualify)62.6(50 is the typical model of its size class)MHP17060A-**Awith indoor coil MCVP60CNPA+TDR and furnace MGM80SE090C5A2 of 4 models have all five ratings · AHRI 212619860
Non-ducted, up to 1.5 tons86.0(50 is the typical model of its size class)O-ES-09-HP-C-230Bwith ductless indoor unit O-09-HP-WMAH-230B8 of 23 models qualify · AHRI 20855281088.4(50 is the typical model of its size class)O-ES-09-HP-C-230Bwith ductless indoor unit O-09-HP-WMAH-230B23 of 23 models have all five ratings · AHRI 208552810
Non-ducted, 2 tons84.5(50 is the typical model of its size class)O-HH-24-HP-C-230Awith ductless indoor unit O-24-HP-WMAH-230BAlso listed as O-HH-24-HP-C-230B3 of 7 models qualify · AHRI 20733916484.3(50 is the typical model of its size class)O-HH-24-HP-C-230Awith ductless indoor unit O-24-HP-WMAH-230BAlso listed as O-HH-24-HP-C-230B7 of 7 models have all five ratings · AHRI 207339164
Non-ducted, 2.5–3 tons53.7(50 is the typical model of its size class)DIY-MULTI3-27HP230C1 of 10 models qualify · AHRI 20733919578.2(50 is the typical model of its size class)MULTI3-27HP230B7 of 10 models have all five ratings · AHRI 208552834
Non-ducted, 3.5–4.5 tonsNone on this board (0 of 2 models qualify)56.1(50 is the typical model of its size class)MULTI5-48HP230B2 of 2 models have all five ratings · AHRI 208552838

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.
MPH601H413BMRCOOL5 tons57,000 Btu/h · Ducted1.4038%6.713.4None1215405098
MPH481H413BMRCOOL4 tons46,500 Btu/h · Ducted1.4037%6.713.4None1215405097
MPH421H413BMRCOOL3.5 tons40,500 Btu/h · Ducted1.4037%6.713.4None1215405096
MPH361H413BMRCOOL3 tons34,200 Btu/h · Ducted1.4034%6.713.4None1215405095
MPH301H413BMRCOOL2.5 tons28,200 Btu/h · Ducted1.4035%6.713.4None1215405094

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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.