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1HVAC heat pump efficiency: 87 outdoor models compared

1HVAC has 87 heat pump outdoor models certified with this refrigerant group, in 1,190 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 1HVAC makes. 1HVAC 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
87
AHRI certifications
1,190
Efficiency index
54%
Typical model vs same-size, same-type peers (109 models)
Meet CEE 2025
63.2%
55 models

How 1HVAC 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.
1HVAC against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of 1HVAC’s own models1HVAC is strongest on capacity retention at 5°F (its typical model beats 62% of comparable models) and weakest on EER2 (43%).
  • 1HVAC
  • Middle half of its models
  • Other ranked manufacturers
1HVAC

Source: AHRI Directory, NEEP · as of

Average peer percentile of 1HVAC’s models
RatingBeats comparable modelsRankRaw median
Efficiency index109 models scored54%Not ranked—
COP at 5°F109 models scored44%Not ranked1.90
Capacity retention at 5°F109 models scored62%Not ranked77%
HSPF2111 models scored61%Not ranked9.2
SEER2111 models scored59%Not ranked18.0
EER2111 models scored43%Not ranked11.0
Heating capacity at 5°F109 models scored61%Not ranked23,400 Btu/h

Standards met

Share of 1HVAC’s models with at least one qualifying certification
StandardShareModels
CEE 2025 Tier 1 (Split ASHP)63.2%55
CEE 2026 Tier 1 (Split ASHP)59.8%52
CEE Advanced Tier (Split ASHP)1.1%1
Xcel Energy Colorado cold-climate ASHP (2025)55.2%48
DOE Cold Climate Heat Pump Challenge1.1%1
ENERGY STAR Cold Climate41.4%36

Sizes and duct types offered

Models per peer group, and how they score against the other models of that group.
1HVAC’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
  • 1HVAC (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 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 tons957%43%62%62%
Ducted, 2 tons1058%43%66%65%
Ducted, 2.5–3 tons1854%44%66%61%
Ducted, 3.5–4.5 tons2253%41%71%66%
Non-ducted, up to 1.5 tons2155%50%59%60%
Non-ducted, 2 tons651%52%59%48%
Non-ducted, 2.5–3 tons1753%40%51%51%
Non-ducted, 3.5–4.5 tons847%36%46%52%

Every 1HVAC model in the market

1HVAC’s 111 models with a known size and duct type, over the shape of the whole catalog.
1HVAC models by size and ratingColoured: 1HVAC · grey shapes: all 11,475 models · lines: catalog medians by size
  • 1HVAC models
  • Ducted median by size
  • Non-ducted median by size
  • Every model at each size (width = count)
  • Standard threshold

Dots: 111 1hvac 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 1HVAC 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 1HVAC 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
1ACIQ-06ZPL-HP230B1HVAC · ACIQwith ductless indoor unit ACIQ-06W-HH-MC0.5 tons6,000 Btu/h · Non-ducted107%2.0913.67,50026.5CEE 25CEE 26XcelES CC2210857294Non-ducted, up to 1.5 tons89.3
2ACIQ-24ZPL-HP230B1HVAC · ACIQwith ductless indoor unit ACIQ-24FM-HH-MB2 tons24,000 Btu/h · Non-ducted102%2.1011.025,00020.5CEE 25CEE 26CEE AdvXcelDOEES CC5207825525Non-ducted, 2 tons87.1
3ACIQ-18-HPB1HVAC · ACIQ serieswith ducted air handler ACIQ-18W-WM1.5 tons18,000 Btu/h · Ducted99%2.3010.818,80019.3CEE 25CEE 26XcelES CC5213433229Ducted, up to 1.5 tons86.9
4ACIQ-48ZPL-HP230B1HVAC · ACIQwith ducted air handler ACIQ-48CD-HH-MB4 tons48,000 Btu/h · Ducted88%2.0210.346,00014.3None3210857302Ducted, 3.5–4.5 tons86.4
5ACIQ-60ZPL-HP230B1HVAC · ACIQwith ducted air handler ACIQ-60CD-HH-MB4.5 tons55,000 Btu/h · Ducted93%1.979.553,00015.8ES CC2210857303Ducted, 3.5–4.5 tons82.0

All-around best

Top 5 1HVAC 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
1ACIQ-06ZPL-HP230B1HVAC · ACIQwith ductless indoor unit ACIQ-06W-HH-MC0.5 tons6,000 Btu/h · Non-ducted107%2.0913.626.515.8CEE 25CEE 26XcelES CC2210857294Non-ducted, up to 1.5 tons92.089.394.789.3
2SC-09ZPL-HP2301HVACwith ductless indoor unit SC-09WPL-HP2301 ton9,000 Btu/h · Non-ducted144%1.9111.027.016.6CEE 25CEE 26Xcel1208650726Non-ducted, up to 1.5 tons88.780.197.380.1
3ACIQ-09ZPL-HP230B1HVAC · ACIQwith ductless indoor unit ACIQ-09W-HH-MB1 ton9,000 Btu/h · Non-ducted94%1.9711.528.116.2CEE 25CEE 26XcelES CC5207825512Non-ducted, up to 1.5 tons87.777.497.977.4
4ACIQ-09ZPL-HP230B1HVAC · ACIQwith ducted air handler ACIQ-09CD-HH-MB1 ton9,000 Btu/h · Ducted108%1.9012.020.213.2CEE 25CEE 26XcelES CC5207825519Ducted, up to 1.5 tons85.274.995.574.9
5ACIQ-24ZPL-HP230B1HVAC · ACIQwith ductless indoor unit ACIQ-24W-HH-MC2 tons24,000 Btu/h · Non-ducted86%2.2111.421.513.0CEE 25CEE 26CEE AdvXcelDOEES CC5210857298Non-ducted, 2 tons84.384.584.187.1

Best model on each rating

1HVAC’s model with the highest peer percentile on each rating, ranked by that one rating only
RatingModelValueCompared withBeatsAHRI ref.
COP at 5°FACIQ-24ZPL-HP230B2.21Non-ducted, 2 tons91%210857298
Capacity retention at 5°FSC-09ZPL-HP230144%Non-ducted, up to 1.5 tons99%208650726
HSPF2ACIQ-48ZPL-HP230B10.3Ducted, 3.5–4.5 tons99%210857302
SEER2ES-27Z-M3B24.6Non-ducted, 2.5–3 tons99%210857368
EER2SC-09ZPL-HP23016.6Non-ducted, up to 1.5 tons99%208650726
Heating capacity at 5°FACIQ-60ZPL-HP230B56,500 Btu/hNon-ducted, 3.5–4.5 tons99%210857306

All 87 1HVAC models in Explore

1HVAC 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.
1HVAC: 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 tons86.9(50 is the typical model of its size class)ACIQ-18-HPBwith ducted air handler ACIQ-18W-WM8 of 9 models qualify · AHRI 21343322985.2(50 is the typical model of its size class)ACIQ-09ZPL-HP230Bwith ducted air handler ACIQ-09CD-HH-MB9 of 9 models have all five ratings · AHRI 207825519
Ducted, 2 tons80.7(50 is the typical model of its size class)ACIQ-24ZPL-HP230Bwith ducted air handler ACIQ-24CD-HH-MB9 of 9 models qualify · AHRI 20782552280.8(50 is the typical model of its size class)ACIQ-24ZPL-HP230Bwith ducted air handler ACIQ-24CD-HH-MB10 of 10 models have all five ratings · AHRI 207825522
Ducted, 2.5–3 tons79.9(50 is the typical model of its size class)ACIQ-36ZPL-HP230Bwith ducted air handler ACIQ-36CD-HH-MB14 of 19 models qualify · AHRI 21085730175.4(50 is the typical model of its size class)HVH837GKA2*with indoor coil EN(A,D,W)4X60L24**+WALLCON and furnace *95CSU0802120A18 of 18 models have all five ratings · AHRI 210470878
Ducted, 3.5–4.5 tons86.4(50 is the typical model of its size class)ACIQ-48ZPL-HP230Bwith ducted air handler ACIQ-48CD-HH-MB14 of 22 models qualify · AHRI 21085730282.0(50 is the typical model of its size class)ACIQ-48Z-HH-M5B21 of 21 models have all five ratings · AHRI 207825574
Ducted, 5 tons and upNo models in this size class41.7(50 is the typical model of its size class)ACIQ-60-EHPBwith ducted air handler ACIQ-60AHB1 of 1 models have all five ratings · AHRI 213433223
Non-ducted, up to 1.5 tons89.3(50 is the typical model of its size class)ACIQ-06ZPL-HP230Bwith ductless indoor unit ACIQ-06W-HH-MC11 of 21 models qualify · AHRI 21085729492.0(50 is the typical model of its size class)ACIQ-06ZPL-HP230Bwith ductless indoor unit ACIQ-06W-HH-MC21 of 21 models have all five ratings · AHRI 210857294
Non-ducted, 2 tons87.1(50 is the typical model of its size class)ACIQ-24ZPL-HP230Bwith ductless indoor unit ACIQ-24FM-HH-MB3 of 6 models qualify · AHRI 20782552584.3(50 is the typical model of its size class)ACIQ-24ZPL-HP230Bwith ductless indoor unit ACIQ-24W-HH-MC6 of 6 models have all five ratings · AHRI 210857298
Non-ducted, 2.5–3 tons79.3(50 is the typical model of its size class)ACIQ-36Z-HH-M4B9 of 17 models qualify · AHRI 20782557082.8(50 is the typical model of its size class)ACIQ-36Z-HH-M4B15 of 17 models have all five ratings · AHRI 207825570
Non-ducted, 3.5–4.5 tons76.8(50 is the typical model of its size class)ACIQ-60ZPL-HP230Bwith ductless indoor unit ACIQ-60FM-HH-MB5 of 8 models qualify · AHRI 21085730677.9(50 is the typical model of its size class)ACIQ-48Z-HH-M5B8 of 8 models have all five ratings · AHRI 207825573

All-around board, every manufacturer

Newest 1HVAC certifications

By AHRI reference number; AHRI issues references in increasing order.
The 5 most recently certified 1HVAC outdoor models
Outdoor modelSize · typeCOP@5°FCap. 5/47HSPF2SEER2MeetsCombosAHRI ref.
SC-27Z-HH-M4B1HVAC · Extreme Heat2 tons23,200 Btu/h · Ducted and non-ducted and mixed (multi-zone)2.1090%10.021.0CEE 25CEE 26XcelES CC3215742357
ACIQ-30-HPB1HVAC · ACIQ Serieswith ducted air handler ACIQ-30-AHB2.5 tons30,000 Btu/h · Ducted1.8073%8.916.2CEE 25CEE 26XcelES CC6215570366
EZ-36-HP1HVAC · EZ Serieswith ducted air handler EZ-36-AH3 tons36,000 Btu/h · Ducted1.8699%9.516.0CEE 25CEE 26XcelES CC1215463873
ACIQ-PHH1760000K000V1HVAC · Extreme Heat Inverter Rooftop4.5 tons56,000 Btu/h · Ducted1.8079%8.317.0XcelES CC1215387221
ACIQ-PHH1748000K000V1HVAC · Extreme Heat Inverter Rooftop4 tons47,000 Btu/h · Ducted1.8098%8.517.8CEE 25CEE 26XcelES CC1215387220

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1HVAC includes these brand names as listed in AHRI: 1HVAC. Standards are checked against published thresholds; program rules beyond ratings are not checked.