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SLIMAIR vs TGM heat pumps

Measured against models of the same size and duct type, SLIMAIR scores higher on 6 of the 6 ratings. SLIMAIR has 48 outdoor models, TGM has 77 outdoor models. SLIMAIR and TGM 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.
SLIMAIR and TGM 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, SLIMAIR scores higher on 6 of the 6 ratings.
  • SLIMAIR
  • TGM
  • Other ranked manufacturers
SLIMAIRTGM

Source: AHRI Directory, NEEP · as of

Average peer percentile, raw median and rank among ranked manufacturers
RatingSLIMAIRTGM
Efficiency index60% (higher)median —45% (higher)median —
COP at 5°F60% (higher)median 2.0048% (higher)median 1.91
Capacity retention at 5°F59% (higher)median 78%42% (higher)median 71%
HSPF273% (higher)median 10.041% (higher)median 8.6
SEER261% (higher)median 19.545% (higher)median 19.0
EER253% (higher)median 11.742% (higher)median 11.2
Heating capacity at 5°F63% (higher)median 21,600 Btu/h47% (higher)median 14,100 Btu/h
Outdoor models4877
AHRI certifications117152

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
StandardSLIMAIRTGM
CEE 2025 Tier 1 (Split ASHP)89.6%43 models58.4%45 models
CEE 2026 Tier 1 (Split ASHP)87.5%42 models57.1%44 models
CEE Advanced Tier (Split ASHP)2.1%1 models1.3%1 models
Xcel Energy Colorado cold-climate ASHP (2025)77.1%37 models54.5%42 models
DOE Cold Climate Heat Pump Challenge2.1%1 models1.3%1 models
ENERGY STAR Cold Climate79.2%38 models20.8%16 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 · 9 groups where both have models
  • SLIMAIR
  • TGM
  • 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

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 typeSLIMAIRTGM
Ducted, up to 1.5 tons11 · index 76%5 · index 62%
Ducted, 2 tons5 · index 67%8 · index 67%
Ducted, 2.5–3 tons9 · index 65%10 · index 50%
Ducted, 3.5–4.5 tons10 · index 61%11 · index 61%
Ducted, 5 tons and up2 · index 64%2 · index 69%
Non-ducted, up to 1.5 tons16 · index 61%32 · index 34%
Non-ducted, 2 tons4 · index 55%9 · index 43%
Non-ducted, 2.5–3 tons8 · index 49%8 · index 40%
Non-ducted, 3.5–4.5 tons7 · index 42%5 · index 43%
Non-ducted, 5 tons and up1 · index 27%None

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 typeSLIMAIRCold-climate score, best modelTGMCold-climate score, best model
Ducted, up to 1.5 tons93.5(50 is the typical model of its size class) (higher)SHC06AH2AGwith ducted air handler SHDL06AC2AG10 of 11 models qualify · AHRI 21847298469.8(50 is the typical model of its size class)MRS5VHT18ASwith ducted air handler MFC5VHT18S3 of 5 models qualify · AHRI 217274613
Ducted, 2 tons85.7(50 is the typical model of its size class) (higher)SHC24AH2AGwith ducted air handler SHD24AC2AG5 of 5 models qualify · AHRI 21669932777.1(50 is the typical model of its size class)MRS5VHT24ASwith ducted air handler MFC5VHT24S6 of 8 models qualify · AHRI 217274615
Ducted, 2.5–3 tons83.2(50 is the typical model of its size class) (higher)SHC36AH2AGwith ducted air handler SHD36AC2AG7 of 9 models qualify · AHRI 21669932863.6(50 is the typical model of its size class)MTVC2OCN036Awith ducted air handler MTA20C036A3 of 10 models qualify · AHRI 218044247
Ducted, 3.5–4.5 tons82.7(50 is the typical model of its size class) (higher)SHC6Z48AH2AG10 of 10 models qualify · AHRI 21745629172.2(50 is the typical model of its size class)OTV18HN048Awith ducted air handler OTA18C006AAlso listed as OTV18HN060A7 of 11 models qualify · AHRI 217747072
Ducted, 5 tons and upNone on this board (0 of 2 models qualify)64.1(50 is the typical model of its size class)MRB560HWD1 of 2 models qualify · AHRI 217194656
Non-ducted, up to 1.5 tons93.8(50 is the typical model of its size class) (higher)SHC06AH2AGwith ductless indoor unit SHM06AE2AG12 of 16 models qualify · AHRI 21750025679.2(50 is the typical model of its size class)ARHHBT18ASwith ductless indoor unit AWHHBT18S22 of 32 models qualify · AHRI 218620807
Non-ducted, 2 tons89.4(50 is the typical model of its size class) (higher)SHC24AH2AGwith ductless indoor unit SHL24AC2AG4 of 4 models qualify · AHRI 21669935177.9(50 is the typical model of its size class)MRS5VHT24ASwith ductless indoor unit MUV5HT24S6 of 9 models qualify · AHRI 216706039
Non-ducted, 2.5–3 tons89.4(50 is the typical model of its size class) (higher)SHC36AH2AGwith ductless indoor unit SHS36AC2AG6 of 8 models qualify · AHRI 21669934077.2(50 is the typical model of its size class)GMRSHT36AS46 of 8 models qualify · AHRI 217284813
Non-ducted, 3.5–4.5 tons69.9(50 is the typical model of its size class) (higher)SHC6Z55AH2AG6 of 7 models qualify · AHRI 21745629566.5(50 is the typical model of its size class)GMRSHT42AS53 of 5 models qualify · AHRI 217284814
Non-ducted, 5 tons and upNone on this board (0 of 1 models qualify)No models in this size class

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 typeSLIMAIRAll-around score, best modelTGMAll-around score, best model
Ducted, up to 1.5 tons95.0(50 is the typical model of its size class) (higher)SHC06AH2AGwith ducted air handler SHDL06AC2AG11 of 11 models have all five ratings · AHRI 21847298478.4(50 is the typical model of its size class)MRS5VHT18ASwith ducted air handler MFC5VHT18S3 of 5 models have all five ratings · AHRI 217274613
Ducted, 2 tons78.8(50 is the typical model of its size class)SHC24AE2AGwith ducted air handler SHD24AC2AG5 of 5 models have all five ratings · AHRI 21669933479.6(50 is the typical model of its size class) (higher)CTV520HN036Awith ducted air handler CTA520C024A6 of 8 models have all five ratings · AHRI 217138121
Ducted, 2.5–3 tons83.6(50 is the typical model of its size class) (higher)SHC5Z36AH2AG9 of 9 models have all five ratings · AHRI 21745628872.8(50 is the typical model of its size class)MTVC2OCN036Awith ducted air handler MTA20C036A6 of 10 models have all five ratings · AHRI 218044247
Ducted, 3.5–4.5 tons85.1(50 is the typical model of its size class) (higher)SHC6Z48AC2AG10 of 10 models have all five ratings · AHRI 21745627672.6(50 is the typical model of its size class)OTV18HN048Awith ducted air handler OTA18C006AAlso listed as OTV18HN060A8 of 11 models have all five ratings · AHRI 217747072
Ducted, 5 tons and up65.3(50 is the typical model of its size class)SHC60AC2AGwith ducted air handler SHD60AC2AG2 of 2 models have all five ratings · AHRI 21669933770.5(50 is the typical model of its size class) (higher)MRB560HWD2 of 2 models have all five ratings · AHRI 217194656
Non-ducted, up to 1.5 tons93.8(50 is the typical model of its size class) (higher)SHC06AH2AGwith ductless indoor unit SHM06AE2AG16 of 16 models have all five ratings · AHRI 21750025682.9(50 is the typical model of its size class)ARHHBT18ASwith ductless indoor unit AWHHBT18S32 of 32 models have all five ratings · AHRI 218620807
Non-ducted, 2 tons74.3(50 is the typical model of its size class)SHC24AE2AGwith ductless indoor unit SHM24AE2AG4 of 4 models have all five ratings · AHRI 21669931886.5(50 is the typical model of its size class) (higher)ARHHBT24ASwith ductless indoor unit AWHHBT24S9 of 9 models have all five ratings · AHRI 218620808
Non-ducted, 2.5–3 tons66.3(50 is the typical model of its size class) (higher)SHC5Z36AH2AG8 of 8 models have all five ratings · AHRI 21745628764.5(50 is the typical model of its size class)GMRSHT36AS47 of 8 models have all five ratings · AHRI 217284813
Non-ducted, 3.5–4.5 tons62.6(50 is the typical model of its size class)SHC6Z55AH2AG7 of 7 models have all five ratings · AHRI 21745629367.7(50 is the typical model of its size class) (higher)GMRSHT42AS54 of 5 models have all five ratings · AHRI 217284814
Non-ducted, 5 tons and up32.5(50 is the typical model of its size class)SHC6Z55AC2AG1 of 1 models have all five ratings · AHRI 217456278No models in this size class

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
RatingSLIMAIRTGM
COP at 5°Fbeats 96% · 2.39SHC12AE2AGNon-ducted, up to 1.5 tonsbeats 98% · 2.50ARHCPT18ASNon-ducted, up to 1.5 tons
Capacity retention at 5°Fbeats 98% · 120%SHC09AH2AGDucted, up to 1.5 tonsbeats 88% · 70%MRB560HWDDucted, 5 tons and up
HSPF2beats 99% · 11.0SHC6Z48AH2AGDucted, 3.5–4.5 tonsbeats 94% · 9.7MR5SVHT60ASDucted, 5 tons and up
SEER2beats 96% · 20.4SHC6Z48AC2AGDucted, 3.5–4.5 tonsbeats 97% · 22.0TMRHT18AS2Ducted, up to 1.5 tons
EER2beats 99% · 14.4SHC06AH2AGDucted, up to 1.5 tonsbeats 96% · 14.0ARHHBT24ASNon-ducted, 2 tons
Heating capacity at 5°Fbeats 98% · 39,500 Btu/hSHC36AH2AGNon-ducted, 2.5–3 tonsbeats 86% · 15,000 Btu/hARHHBT18ASNon-ducted, up to 1.5 tons

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