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MSH LEGACY vs TRUENORTH heat pumps

Measured against models of the same size and duct type, TRUENORTH scores higher on 6 of the 6 ratings. MSH LEGACY has 7 outdoor models, TRUENORTH has 10 outdoor models. MSH LEGACY and TRUENORTH 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.
MSH LEGACY and TRUENORTH 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, TRUENORTH scores higher on 6 of the 6 ratings.
  • MSH LEGACY
  • TRUENORTH
  • Other ranked manufacturers
MSH LEGA…TRUENORTH

Source: AHRI Directory, NEEP · as of

Average peer percentile, raw median and rank among ranked manufacturers
RatingMSH LEGACYTRUENORTH
Efficiency index34%median —53%median —
COP at 5°F25%median 1.8054%median 2.00
Capacity retention at 5°F11%median 41%59%median 76%
HSPF224%median 7.238%median 9.4
SEER239%median 15.250%median 20.8
EER256%median 11.563%median 12.0
Heating capacity at 5°F15%median 18,200 Btu/h57%median 19,200 Btu/h
Outdoor models710
AHRI certifications722

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
StandardMSH LEGACYTRUENORTH
CEE 2025 Tier 1 (Split ASHP)0%0 models90%9 models
CEE 2026 Tier 1 (Split ASHP)0%0 models90%9 models
CEE Advanced Tier (Split ASHP)0%0 models10%1 models
Xcel Energy Colorado cold-climate ASHP (2025)0%0 models90%9 models
DOE Cold Climate Heat Pump Challenge0%0 models10%1 models
ENERGY STAR Cold Climate0%0 models0%0 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 · 3 groups where both have models
  • MSH LEGACY
  • TRUENORTH
  • 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 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 typeMSH LEGACYTRUENORTH
Ducted, 2 tons1 · index 21%1 · index 55%
Ducted, 2.5–3 tons2 · index 27%2 · index 60%
Ducted, 3.5–4.5 tons4 · index 40%2 · index 68%
Ducted, up to 1.5 tonsNone1 · index 49%
Non-ducted, up to 1.5 tonsNone4 · index 37%
Non-ducted, 2 tonsNone2 · index 50%
Non-ducted, 2.5–3 tonsNone2 · index 68%
Non-ducted, 3.5–4.5 tonsNone2 · index 52%

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 typeMSH LEGACYCold-climate score, best modelTRUENORTHCold-climate score, best model
Ducted, up to 1.5 tonsNo models in this size class39.3(50 is the typical model of its size class)WLWHD(18)ND6MO1 of 1 models qualify · AHRI 218593168
Ducted, 2 tonsNone on this board (0 of 1 models qualify)49.0(50 is the typical model of its size class)WLWHD(24)ND6MO1 of 1 models qualify · AHRI 218593170
Ducted, 2.5–3 tonsNone on this board (0 of 2 models qualify)52.2(50 is the typical model of its size class)WLWHD(36)ND6MO2 of 2 models qualify · AHRI 218593172
Ducted, 3.5–4.5 tonsNone on this board (0 of 4 models qualify)55.7(50 is the typical model of its size class)WLWHD(42)ND6MO1 of 2 models qualify · AHRI 218593173
Non-ducted, up to 1.5 tonsNo models in this size class61.4(50 is the typical model of its size class)WLWHD(18)ND6MO4 of 4 models qualify · AHRI 218593163
Non-ducted, 2 tonsNo models in this size class67.5(50 is the typical model of its size class)WLWHD(24)ND6MO2 of 2 models qualify · AHRI 218593164
Non-ducted, 2.5–3 tonsNo models in this size class77.2(50 is the typical model of its size class)WLWHD(36)ND6MO2 of 2 models qualify · AHRI 218593166
Non-ducted, 3.5–4.5 tonsNo models in this size class66.5(50 is the typical model of its size class)WLWHD(42)ND6MO1 of 2 models qualify · AHRI 218593167

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 typeMSH LEGACYAll-around score, best modelTRUENORTHAll-around score, best model
Ducted, up to 1.5 tonsNo models in this size class48.6(50 is the typical model of its size class)WLWHD(18)ND6MO1 of 1 models have all five ratings · AHRI 218593168
Ducted, 2 tons20.5(50 is the typical model of its size class)PHB524000K000B*1 of 1 models have all five ratings · AHRI 21715439654.7(50 is the typical model of its size class) (higher)WLWHD(24)ND6MO1 of 1 models have all five ratings · AHRI 218593170
Ducted, 2.5–3 tons27.2(50 is the typical model of its size class)PHB536000H000B*2 of 2 models have all five ratings · AHRI 21715442061.6(50 is the typical model of its size class) (higher)WLWHD(30)ND6MO2 of 2 models have all five ratings · AHRI 218593171
Ducted, 3.5–4.5 tons46.0(50 is the typical model of its size class)PHB560000H000B*4 of 4 models have all five ratings · AHRI 21715447069.1(50 is the typical model of its size class) (higher)WLWHD(42)ND6MO2 of 2 models have all five ratings · AHRI 218593173
Non-ducted, up to 1.5 tonsNo models in this size class52.7(50 is the typical model of its size class)WLWHD(18)ND6MO4 of 4 models have all five ratings · AHRI 218593163
Non-ducted, 2 tonsNo models in this size class67.6(50 is the typical model of its size class)WLWHD(24)ND6MO2 of 2 models have all five ratings · AHRI 218593164
Non-ducted, 2.5–3 tonsNo models in this size class70.5(50 is the typical model of its size class)WLWHD(30)ND6MO2 of 2 models have all five ratings · AHRI 218593165
Non-ducted, 3.5–4.5 tonsNo models in this size class67.7(50 is the typical model of its size class)WLWHD(42)ND6MO2 of 2 models have all five ratings · AHRI 218593167

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
RatingMSH LEGACYTRUENORTH
COP at 5°Fbeats 54% · 2.00PHB560000K000B*Ducted, 3.5–4.5 tonsbeats 96% · 2.20WLWHD(60)ND6MONon-ducted, 3.5–4.5 tons
Capacity retention at 5°Fbeats 17% · 46%PHB560000H000B*Ducted, 3.5–4.5 tonsbeats 81% · 100%WLWHD(36)ND6MONon-ducted, 2.5–3 tons
HSPF2beats 34% · 7.7PHB560000K000B*Ducted, 3.5–4.5 tonsbeats 69% · 10.0WLWHD(24)ND6MONon-ducted, 2 tons
SEER2beats 42% · 15.5PHB560000K000B*Ducted, 3.5–4.5 tonsbeats 85% · 19.0WLWHD(60)ND6MODucted, 3.5–4.5 tons
EER2beats 57% · 11.5PHB548000K000B*Ducted, 3.5–4.5 tonsbeats 94% · 13.0WLWHD(42)ND6MONon-ducted, 3.5–4.5 tons
Heating capacity at 5°Fbeats 27% · 25,800 Btu/hPHB560000K000B*Ducted, 3.5–4.5 tonsbeats 86% · 36,000 Btu/hWLWHD(36)ND6MONon-ducted, 2.5–3 tons

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