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ENVI heat pump efficiency: 8 outdoor models compared

ENVI has 8 heat pump outdoor models certified with this refrigerant group, in 12 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 ENVI makes. ENVI 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
8
AHRI certifications
12
Efficiency index
44%
Typical model vs same-size, same-type peers (10 models)
Meet CEE 2025
75%
6 models

How ENVI 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.
ENVI against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of ENVI’s own modelsENVI is strongest on heating capacity at 5°F (its typical model beats 57% of comparable models) and weakest on HSPF2 (36%).
  • ENVI
  • Middle half of its models
  • Other ranked manufacturers
ENVI

Source: AHRI Directory, NEEP · as of

Average peer percentile of ENVI’s models
RatingBeats comparable modelsRankRaw median
Efficiency index10 models scored44%Not ranked—
COP at 5°F10 models scored37%Not ranked1.93
Capacity retention at 5°F10 models scored51%Not ranked75%
HSPF210 models scored36%Not ranked8.6
SEER210 models scored44%Not ranked19.0
EER210 models scored48%Not ranked11.7
Heating capacity at 5°F10 models scored57%Not ranked14,750 Btu/h

Standards met

Share of ENVI’s models with at least one qualifying certification
StandardShareModels
CEE 2025 Tier 1 (Split ASHP)75%6
CEE 2026 Tier 1 (Split ASHP)75%6
CEE Advanced Tier (Split ASHP)0%0
Xcel Energy Colorado cold-climate ASHP (2025)62.5%5
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.
ENVI’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
  • ENVI (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 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 tons149%43%23%60%
Ducted, 2 tons155%30%36%55%
Ducted, 2.5–3 tons158%56%50%84%
Ducted, 3.5–4.5 tons174%83%81%87%
Non-ducted, up to 1.5 tons428%27%23%21%
Non-ducted, 2 tons246%27%41%37%

Every ENVI model in the market

ENVI’s 10 models with a known size and duct type, over the shape of the whole catalog.
ENVI models by size and ratingColoured: ENVI · grey shapes: all 14,508 models · lines: catalog medians by size
  • ENVI models
  • Ducted median by size
  • Non-ducted median by size
  • Every model at each size (width = count)
  • Standard threshold

Dots: 10 envi 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 ENVI 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 ENVI 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
1ECSO19A60FL230AENVIwith ducted air handler ECSI19A60FL230A4.5 tons53,500 Btu/h · Ducted74%2.249.540,00019.0CEE 25CEE 26Xcel1217559792Ducted, 3.5–4.5 tons73.5
2EMSO21M24ZE230AENVI · M-Series2 tons24,000 Btu/h · Non-ducted90%2.0010.021,60021.0CEE 25CEE 26Xcel3217559795Non-ducted, 2 tons67.5
3EMSO21M18ZE230AENVI · M-Series1.5 tons18,000 Btu/h · Non-ducted77%2.0010.013,80021.0CEE 25CEE 26Xcel3217559794Non-ducted, up to 1.5 tons61.7
4EMSO21M24ZE230AENVI · M-Series2 tons24,000 Btu/h · Ducted90%1.868.121,60018.0CEE 25CEE 26Xcel3217559798Ducted, 2 tons49.0
5EMSO21M18ZE230AENVI · M-Series1.5 tons18,000 Btu/h · Ducted76%1.868.113,60018.0CEE 25CEE 26Xcel3217559796Ducted, up to 1.5 tons39.6

All-around best

Top 5 ENVI 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
1ECSO19A60FL230AENVIwith ducted air handler ECSI19A60FL230A4.5 tons53,500 Btu/h · Ducted74%2.249.519.011.5CEE 25CEE 26Xcel1217559792Ducted, 3.5–4.5 tons74.473.575.273.5
2EMSO21M24ZE230AENVI · M-Series2 tons24,000 Btu/h · Non-ducted90%2.0010.021.013.3CEE 25CEE 26Xcel3217559795Non-ducted, 2 tons67.667.567.867.5
3ECSO19A36FL230AENVIwith ducted air handler ECSI19A36FL230A3 tons34,000 Btu/h · Ducted64%2.008.319.011.5CEE 25CEE 261217559793Ducted, 2.5–3 tons57.648.466.8Not a pick
4EMSO21M24ZE230AENVI · M-Series2 tons24,000 Btu/h · Ducted90%1.868.118.012.0CEE 25CEE 26Xcel3217559798Ducted, 2 tons54.749.060.449.0
5EMSO21M18ZE230AENVI · M-Series1.5 tons18,000 Btu/h · Non-ducted77%2.0010.021.012.0CEE 25CEE 26Xcel3217559794Non-ducted, up to 1.5 tons52.861.744.061.7

Best model on each rating

ENVI’s model with the highest peer percentile on each rating, ranked by that one rating only
RatingModelValueCompared withBeatsAHRI ref.
COP at 5°FECSO19A60FL230A2.24Ducted, 3.5–4.5 tons83%217559792
Capacity retention at 5°FEMSO21M24ZE230A90%Non-ducted, 2 tons79%217559795
HSPF2ECSO19A60FL230A9.5Ducted, 3.5–4.5 tons79%217559792
SEER2ECSO19A60FL230A19.0Ducted, 3.5–4.5 tons85%217559792
EER2EMSO21M24ZE230A13.3Non-ducted, 2 tons87%217559795
Heating capacity at 5°FEMSO21M18ZE230A13,800 Btu/hNon-ducted, up to 1.5 tons81%217559794

All 8 ENVI models in Explore

ENVI 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.
ENVI: 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 tons39.6(50 is the typical model of its size class)EMSO21M18ZE230A1 of 1 models qualify · AHRI 21755979648.7(50 is the typical model of its size class)EMSO21M18ZE230A1 of 1 models have all five ratings · AHRI 217559796
Ducted, 2 tons49.0(50 is the typical model of its size class)EMSO21M24ZE230A1 of 1 models qualify · AHRI 21755979854.7(50 is the typical model of its size class)EMSO21M24ZE230A1 of 1 models have all five ratings · AHRI 217559798
Ducted, 2.5–3 tonsNone on this board (0 of 1 models qualify)57.6(50 is the typical model of its size class)ECSO19A36FL230Awith ducted air handler ECSI19A36FL230A1 of 1 models have all five ratings · AHRI 217559793
Ducted, 3.5–4.5 tons73.5(50 is the typical model of its size class)ECSO19A60FL230Awith ducted air handler ECSI19A60FL230A1 of 1 models qualify · AHRI 21755979274.4(50 is the typical model of its size class)ECSO19A60FL230Awith ducted air handler ECSI19A60FL230A1 of 1 models have all five ratings · AHRI 217559792
Non-ducted, up to 1.5 tons61.7(50 is the typical model of its size class)EMSO21M18ZE230A3 of 4 models qualify · AHRI 21755979452.8(50 is the typical model of its size class)EMSO21M18ZE230A4 of 4 models have all five ratings · AHRI 217559794
Non-ducted, 2 tons67.5(50 is the typical model of its size class)EMSO21M24ZE230A2 of 2 models qualify · AHRI 21755979567.6(50 is the typical model of its size class)EMSO21M24ZE230A2 of 2 models have all five ratings · AHRI 217559795

All-around board, every manufacturer

Newest ENVI certifications

By AHRI reference number; AHRI issues references in increasing order.
The 5 most recently certified ENVI outdoor models
Outdoor modelSize · typeCOP@5°FCap. 5/47HSPF2SEER2MeetsCombosAHRI ref.
EMSO188S18ZE230AENVI · ZENOwith ductless indoor unit EMSI188S18ZE230A1.5 tons18,000 Btu/h · Non-ducted1.7556%8.218.0None1217559803
EMSO188S24ZE230AENVIwith ductless indoor unit EMSI188S24ZE230A2 tons24,000 Btu/h · Non-ducted1.7570%8.519.0CEE 25CEE 26Xcel1217559802
EMSO188S12ZE230AENVI · ZENOwith ductless indoor unit EMSI188S12ZE230A1 ton12,000 Btu/h · Non-ducted1.7579%8.017.0None1217559801
EMSO188S9ZE230AENVI · ZENOwith ductless indoor unit EMSI188S9ZE230A1 ton9,100 Btu/h · Non-ducted1.8576%8.618.8CEE 25CEE 26Xcel1217559800
EMSO21M24ZE230AENVI · M-Series2 tons24,000 Btu/h · Ducted and non-ducted and mixed (multi-zone)1.8090%9.019.0CEE 25CEE 26Xcel3217559799

Shares hardware with

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

No shared hardware found for ENVI in this group.

Compare ENVI

Manufacturers of a similar size, side by side.

Compare with any manufacturer

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