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EMI vs VENTAGEN heat pumps

Measured against models of the same size and duct type, EMI scores higher on 5 of the 6 ratings. EMI has 15 outdoor models, VENTAGEN has 15 outdoor models. EMI and VENTAGEN have no QMID on file and are not ranked.

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CompareData as of updated · sources

Against comparable models

Each cell is the share of same-size, same-type models that the manufacturer’s typical model beats (50% is typical); the higher score is in bold. Raw medians are underneath for context: they depend on which sizes each one makes, so they are not compared.
EMI and VENTAGEN on every ratingPeer scores, 0–100 · grey ticks: every ranked manufacturer · shaded: the middle half of each one’s modelsMeasured against models of the same size and duct type, EMI scores higher on 5 of the 6 ratings.
  • EMI
  • VENTAGEN
  • Other ranked manufacturers
EMIVENTAGEN

Source: AHRI Directory, NEEP · as of

Average peer percentile, raw median and rank among ranked manufacturers
RatingEMIVENTAGEN
Efficiency index62% (higher)median —58% (higher)median —
COP at 5°F56% (higher)median 2.0038% (higher)median 1.90
Capacity retention at 5°F63% (higher)median 95%53% (higher)median 73%
HSPF269% (higher)median 10.560% (higher)median 10.0
SEER261%median 21.474%median 23.0
EER260% (higher)median 12.556% (higher)median 12.0
Heating capacity at 5°F60% (higher)median 18,000 Btu/h54% (higher)median 16,000 Btu/h
Outdoor models1515
AHRI certifications2715

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
StandardEMIVENTAGEN
CEE 2025 Tier 1 (Split ASHP)86.7%13 models100%15 models
CEE 2026 Tier 1 (Split ASHP)86.7%13 models100%15 models
CEE Advanced Tier (Split ASHP)6.7%1 models0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)73.3%11 models100%15 models
DOE Cold Climate Heat Pump Challenge6.7%1 models0%0 models
ENERGY STAR Cold Climate73.3%11 models100%15 models

Sizes and duct types offered

Models in each peer group, with the efficiency index of those models against the rest of the group.
Side by side, inside each size and duct typeShape: every model of the group · bars: each manufacturer’s middle half, median dot, 10th–90th line · 4 groups where both have models
  • EMI
  • VENTAGEN
  • All models of the group
Ducted, up to 1.5 tons1.901,783 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

Raw ratings are only placed side by side within one size and duct type, where they are comparable.

Source: AHRI Directory · as of

Models per peer group · efficiency index within the group
Size and duct typeEMIVENTAGEN
Ducted, up to 1.5 tons1 · index 77%None
Ducted, 2.5–3 tons2 · index 81%None
Ducted, 3.5–4.5 tons1 · index 84%None
Non-ducted, up to 1.5 tons8 · index 60%9 · index 61%
Non-ducted, 2 tons2 · index 53%3 · index 53%
Non-ducted, 2.5–3 tons4 · index 46%2 · index 58%
Non-ducted, 3.5–4.5 tons1 · index 76%1 · index 42%

Cold-climate and all-around picks, size class by size class

Each manufacturer’s best model on each board in every size and duct type, side by side; the higher score is in bold. Both scores are 0–100 against every model of that size class (the line on each bar is 50, the typical model there), so the two compare fairly even when they make different sizes.

Cold-climate picks

Best cold-climate pick per size and duct type (keeps at least 70% of its heat at 5°F). 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.
Size and duct typeEMICold-climate score, best modelVENTAGENCold-climate score, best model
Ducted, up to 1.5 tons70.8(50 is the typical model of its size class)EMXMZ218DA1 of 1 models qualify · AHRI 215444941No models in this size class
Ducted, 2.5–3 tons82.5(50 is the typical model of its size class)EMXMZ436DA2 of 2 models qualify · AHRI 215444947No models in this size class
Ducted, 3.5–4.5 tons82.7(50 is the typical model of its size class)EMXMZ548DA1 of 1 models qualify · AHRI 215444950No models in this size class
Non-ducted, up to 1.5 tons96.7(50 is the typical model of its size class) (higher)EMXSZ106DAwith ductless indoor unit EMXWAL06DA6 of 8 models qualify · AHRI 21544493568.6(50 is the typical model of its size class)TV2H18FM22X4549 of 9 models qualify · AHRI 218327241
Non-ducted, 2 tons88.4(50 is the typical model of its size class) (higher)EMXSZ124DAwith ductless indoor unit EMXWAL24DA2 of 2 models qualify · AHRI 21544493958.0(50 is the typical model of its size class)TSVH24HEI2N24O454with ductless indoor unit TSVH24HEI2N24I4543 of 3 models qualify · AHRI 218327252
Non-ducted, 2.5–3 tons78.0(50 is the typical model of its size class) (higher)EMXMZ436DA2 of 4 models qualify · AHRI 21544494857.5(50 is the typical model of its size class)TV3H27FM22X4542 of 2 models qualify · AHRI 218327242
Non-ducted, 3.5–4.5 tons73.4(50 is the typical model of its size class) (higher)EMXMZ548DA1 of 1 models qualify · AHRI 21544495131.2(50 is the typical model of its size class)TV5H42FM20X4541 of 1 models qualify · AHRI 218327244

All-around best

Best all-around model per size and duct type. 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.
Size and duct typeEMIAll-around score, best modelVENTAGENAll-around score, best model
Ducted, up to 1.5 tons77.4(50 is the typical model of its size class)EMXMZ218DA1 of 1 models have all five ratings · AHRI 215444941No models in this size class
Ducted, 2.5–3 tons83.6(50 is the typical model of its size class)EMXMZ436DA2 of 2 models have all five ratings · AHRI 215444947No models in this size class
Ducted, 3.5–4.5 tons83.9(50 is the typical model of its size class)EMXMZ548DA1 of 1 models have all five ratings · AHRI 215444950No models in this size class
Non-ducted, up to 1.5 tons96.2(50 is the typical model of its size class) (higher)EMXSZ106DAwith ductless indoor unit EMXWAL06DA8 of 8 models have all five ratings · AHRI 21544493576.0(50 is the typical model of its size class)TSVH09HEI2N24O454with ductless indoor unit TSVH09HEI2N24I4549 of 9 models have all five ratings · AHRI 218327249
Non-ducted, 2 tons76.4(50 is the typical model of its size class) (higher)EMXSZ124DAwith ductless indoor unit EMXWAL24DA2 of 2 models have all five ratings · AHRI 21544493956.1(50 is the typical model of its size class)TSVH24HEI2N24O454with ductless indoor unit TSVH24HEI2N24I4543 of 3 models have all five ratings · AHRI 218327252
Non-ducted, 2.5–3 tons78.3(50 is the typical model of its size class) (higher)EMXMZ436DA4 of 4 models have all five ratings · AHRI 21544494665.1(50 is the typical model of its size class)TV3H27FM22X4542 of 2 models have all five ratings · AHRI 218327242
Non-ducted, 3.5–4.5 tons75.6(50 is the typical model of its size class) (higher)EMXMZ548DA1 of 1 models have all five ratings · AHRI 21544494942.4(50 is the typical model of its size class)TV5H42FM20X4541 of 1 models have all five ratings · AHRI 218327244

All-around board, every manufacturer

Standout model on each rating

Each manufacturer’s model that beats the largest share of comparable models on the rating; the higher share is in bold.
Top model per rating by peer percentile, with its AHRI-certified value and peer group
RatingEMIVENTAGEN
COP at 5°Fbeats 97% · 2.40EMXSZ106DANon-ducted, up to 1.5 tonsbeats 77% · 2.10TSVH12EI2N24TO454Non-ducted, up to 1.5 tons
Capacity retention at 5°Fbeats 94% · 110%EMXSZ106DANon-ducted, up to 1.5 tonsbeats 90% · 101%TSVH09HEI2N24O454Non-ducted, up to 1.5 tons
HSPF2beats 99% · 14.8EMXSZ106DANon-ducted, up to 1.5 tonsbeats 80% · 10.5TV3H27FM22X454Non-ducted, 2.5–3 tons
SEER2beats 96% · 20.4EMXMZ548DADucted, 3.5–4.5 tonsbeats 91% · 24.0TV3H27FM22X454Non-ducted, 2.5–3 tons
EER2beats 99% · 18.0EMXSZ106DANon-ducted, up to 1.5 tonsbeats 87% · 14.5TSVH09HEI2N24O454Non-ducted, up to 1.5 tons
Heating capacity at 5°Fbeats 97% · 19,000 Btu/hEMXMZ218DANon-ducted, up to 1.5 tonsbeats 90% · 17,800 Btu/hTSVH18HEI2N24O454Non-ducted, up to 1.5 tons

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