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1HVAC heat pump efficiency: 70 outdoor models compared

1HVAC has 70 heat pump outdoor models certified with this refrigerant group, in 166 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
70
AHRI certifications
166
Efficiency index
61%
Typical model vs same-size, same-type peers (90 models)
Meet CEE 2025
87.1%
61 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 HSPF2 (its typical model beats 71% of comparable models) and weakest on EER2 (55%).
  • 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 index90 models scored61%Not ranked—
COP at 5°F90 models scored57%Not ranked2.00
Capacity retention at 5°F90 models scored59%Not ranked78%
HSPF290 models scored71%Not ranked10.0
SEER290 models scored64%Not ranked19.8
EER290 models scored55%Not ranked12.0
Heating capacity at 5°F90 models scored62%Not ranked21,000 Btu/h

Standards met

Share of 1HVAC’s models with at least one qualifying certification
StandardShareModels
CEE 2025 Tier 1 (Split ASHP)87.1%61
CEE 2026 Tier 1 (Split ASHP)85.7%60
CEE Advanced Tier (Split ASHP)4.3%3
Xcel Energy Colorado cold-climate ASHP (2025)74.3%52
DOE Cold Climate Heat Pump Challenge4.3%3
ENERGY STAR Cold Climate77.1%54

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 tons1.901,783 modelsDucted, 2 tons2.001,090 modelsDucted, 2.5–3 tons2.001,909 modelsDucted, 3.5–4.5 tons2.002,224 modelsDucted, 5 tons and up2.00321 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 modelsNon-ducted, 5 tons and up2.0585 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 tons875%66%82%78%
Ducted, 2 tons865%52%81%69%
Ducted, 2.5–3 tons1265%54%81%69%
Ducted, 3.5–4.5 tons1765%47%81%69%
Ducted, 5 tons and up163%66%82%89%
Non-ducted, up to 1.5 tons2259%71%65%61%
Non-ducted, 2 tons653%73%48%52%
Non-ducted, 2.5–3 tons948%44%48%55%
Non-ducted, 3.5–4.5 tons653%37%67%51%
Non-ducted, 5 tons and up159%79%47%77%

Every 1HVAC model in the market

1HVAC’s 90 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 14,508 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: 90 1hvac 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 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-HP230C1HVAC · ACIQ Serieswith ductless indoor unit ACIQ-06W-HH-MD0.5 tons6,000 Btu/h · Non-ducted110%2.4014.87,70025.5CEE 25CEE 26CEE AdvXcelDOEES CC2216032267Non-ducted, up to 1.5 tons96.7
2ACIQ-24ZPL-HP230C1HVAC · ACIQ Serieswith ductless indoor unit ACIQ-24CC-HH-MC2 tons23,400 Btu/h · Non-ducted95%2.2311.623,80020.7CEE 25CEE 26XcelES CC4216032275Non-ducted, 2 tons89.4
3ACIQ-36ZPL-HP230C1HVAC · ACIQ Serieswith ductless indoor unit ACIQ-36FM-HH-MD3 tons36,400 Btu/h · Non-ducted104%2.0210.839,50020.0CEE 25CEE 26XcelES CC3216032289Non-ducted, 2.5–3 tons89.4
4ACIQ-18-HPD1HVAC · ACIQ Serieswith ducted air handler ACIQ-18W-WMB1.5 tons18,000 Btu/h · Ducted103%2.1010.819,60019.3CEE 25CEE 26CEE AdvXcelDOEES CC6216980821Ducted, up to 1.5 tons86.7
5ACIQ-09ZS-HP230C1HVAC · ACIQ Serieswith ductless indoor unit ACIQ-09WS-HP230C1 ton9,000 Btu/h · Non-ducted82%2.3313.08,20024.6CEE 25CEE 26XcelES CC1216980881Non-ducted, up to 1.5 tons85.9

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-HP230C1HVAC · ACIQ Serieswith ductless indoor unit ACIQ-06W-HH-MD0.5 tons6,000 Btu/h · Non-ducted110%2.4014.825.518.0CEE 25CEE 26CEE AdvXcelDOEES CC2216032267Non-ducted, up to 1.5 tons96.296.795.796.7
2ACIQ-09ZS-HP230C1HVAC · ACIQ Serieswith ductless indoor unit ACIQ-09WS-HP230C1 ton9,000 Btu/h · Non-ducted82%2.3313.024.614.7CEE 25CEE 26XcelES CC1216980881Non-ducted, up to 1.5 tons86.785.987.485.9
3ACIQ-09ZPL-HP230C1HVAC · ACIQ Serieswith ducted air handler ACIQ-09CD-HH-MC1 ton9,000 Btu/h · Ducted120%1.8513.820.514.0CEE 25CEE 26XcelES CC5216032278Ducted, up to 1.5 tons86.579.993.279.9
4ES-48Z-M6C1HVAC · ES Series4 tons45,000 Btu/h · Ducted81%2.1010.620.412.0CEE 25CEE 26XcelES CC3216032320Ducted, 3.5–4.5 tons85.177.992.277.9
5ACIQ-48Z-HH-M6C1HVAC · ACIQ Series4 tons47,000 Btu/h · Ducted100%2.0011.020.411.7CEE 25CEE 26XcelES CC3216032305Ducted, 3.5–4.5 tons83.982.785.182.7

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°FEZ-18ZPL-HP230B2.44Non-ducted, up to 1.5 tons98%216980890
Capacity retention at 5°FACIQ-09ZPL-HP230C126%Non-ducted, up to 1.5 tons98%216032285
HSPF2ACIQ-06ZPL-HP230C14.8Non-ducted, up to 1.5 tons99%216032267
SEER2ES-27Z-M4C25.0Non-ducted, 2.5–3 tons97%216032313
EER2ACIQ-06ZPL-HP230C18.0Non-ducted, up to 1.5 tons99%216032267
Heating capacity at 5°FACIQ-18-HPD19,600 Btu/hDucted, up to 1.5 tons98%216980821

All 70 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 tons86.7(50 is the typical model of its size class)ACIQ-18-HPDwith ducted air handler ACIQ-18W-WMB7 of 8 models qualify · AHRI 21698082186.5(50 is the typical model of its size class)ACIQ-09ZPL-HP230Cwith ducted air handler ACIQ-09CD-HH-MC8 of 8 models have all five ratings · AHRI 216032278
Ducted, 2 tons85.7(50 is the typical model of its size class)ACIQ-24ZPL-HP230Cwith ducted air handler ACIQ-24CD-HH-MC8 of 8 models qualify · AHRI 21603228178.4(50 is the typical model of its size class)ACIQ-24ZPL-HP230Cwith ducted air handler ACIQ-24CD-HH-MC8 of 8 models have all five ratings · AHRI 216032281
Ducted, 2.5–3 tons83.2(50 is the typical model of its size class)ACIQ-36ZPL-HP230Cwith ducted air handler ACIQ-36CD-HH-MC11 of 12 models qualify · AHRI 21603228283.6(50 is the typical model of its size class)ACIQ-36Z-HH-M5C12 of 12 models have all five ratings · AHRI 216032302
Ducted, 3.5–4.5 tons85.1(50 is the typical model of its size class)ACIQ-60-HP32with ducted air handler ACIQ-60-AH3217 of 17 models qualify · AHRI 21538723785.1(50 is the typical model of its size class)ES-48Z-M6C17 of 17 models have all five ratings · AHRI 216032320
Ducted, 5 tons and upNone on this board (0 of 1 models qualify)62.5(50 is the typical model of its size class)ES-55Z-M6C1 of 1 models have all five ratings · AHRI 216032323
Non-ducted, up to 1.5 tons96.7(50 is the typical model of its size class)ACIQ-06ZPL-HP230Cwith ductless indoor unit ACIQ-06W-HH-MD14 of 22 models qualify · AHRI 21603226796.2(50 is the typical model of its size class)ACIQ-06ZPL-HP230Cwith ductless indoor unit ACIQ-06W-HH-MD22 of 22 models have all five ratings · AHRI 216032267
Non-ducted, 2 tons89.4(50 is the typical model of its size class)ACIQ-24ZPL-HP230Cwith ductless indoor unit ACIQ-24CC-HH-MC4 of 6 models qualify · AHRI 21603227576.4(50 is the typical model of its size class)ACIQ-24ZPL-HP230Cwith ductless indoor unit ACIQ-24W-HH-MD6 of 6 models have all five ratings · AHRI 216032271
Non-ducted, 2.5–3 tons89.4(50 is the typical model of its size class)ACIQ-36ZPL-HP230Cwith ductless indoor unit ACIQ-36FM-HH-MD6 of 9 models qualify · AHRI 21603228978.3(50 is the typical model of its size class)ACIQ-36Z-HH-M5C9 of 9 models have all five ratings · AHRI 216032301
Non-ducted, 3.5–4.5 tons73.4(50 is the typical model of its size class)ACIQ-48Z-HH-M6C6 of 6 models qualify · AHRI 21603230675.6(50 is the typical model of its size class)ACIQ-48Z-HH-M6C6 of 6 models have all five ratings · AHRI 216032304
Non-ducted, 5 tons and upNone on this board (0 of 1 models qualify)58.6(50 is the typical model of its size class)ES-55Z-M6C1 of 1 models have all five ratings · AHRI 216032322

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.
ACIQ-48-HPD1HVACwith ducted air handler ACIQ-60-ACL-B4 tons45,000 Btu/h · Ducted1.8085%8.414.5CEE 25CEE 26XcelES CC4217285087
ACIQ-36-HPD1HVACwith ducted air handler ACIQ-36-ACL-14-B3 tons33,000 Btu/h · Ducted1.5696%8.714.6CEE 25CEE 26XcelES CC7217285086
ACIQ-60-EHPD1HVACwith ducted air handler ACIQ-60-ACL-B4 tons50,000 Btu/h · Ducted1.8078%8.214.3ES CC3217285085
ACIQ-48-EHPD1HVACwith ducted air handler ACIQ-60-ACL-B4 tons45,000 Btu/h · Ducted1.7581%8.014.8CEE 25CEE 26XcelES CC3217285083
ACIQ-36-EHPD1HVAC · ACIQ Serieswith ducted air handler ACIQ-36-ACL-14-B2.5 tons29,000 Btu/h · Ducted1.9079%8.514.9CEE 25CEE 26XcelES CC6217285081

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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.