MSH LEGACY vs TRUENORTH heat pumps
Measured against models of the same size and duct type, TRUENORTH scores higher on 4 of the 6 ratings. MSH LEGACY has 18 outdoor models, TRUENORTH has 18 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
- TRUENORTH
- Other ranked manufacturers
Source: AHRI Directory, NEEP · as of
| Rating | MSH LEGACY | TRUENORTH |
|---|---|---|
| Efficiency index | 51% (higher)median — | 41% (higher)median — |
| COP at 5°F | 78% (higher)median 2.22 | 36% (higher)median 1.80 |
| Capacity retention at 5°F | 16%median 47% | 54%median 71% |
| HSPF2 | 33%median 7.5 | 45%median 8.5 |
| SEER2 | 29%median 15.0 | 41%median 17.5 |
| EER2 | 91% (higher)median 12.5 | 33% (higher)median 10.3 |
| Heating capacity at 5°F | 17%median 16,600 Btu/h | 56%median 17,400 Btu/h |
| Outdoor models | 18 | 18 |
| AHRI certifications | 1,716 | 32 |
Share of models meeting each standard
| Standard | MSH LEGACY | TRUENORTH |
|---|---|---|
| CEE 2025 Tier 1 (Split ASHP) | 0%0 models | 50%9 models |
| CEE 2026 Tier 1 (Split ASHP) | 0%0 models | 44.4%8 models |
| CEE Advanced Tier (Split ASHP) | 0%0 models | 0%0 models |
| Xcel Energy Colorado cold-climate ASHP (2025) | 0%0 models | 38.9%7 models |
| DOE Cold Climate Heat Pump Challenge | 0%0 models | 0%0 models |
| ENERGY STAR Cold Climate | 0%0 models | 0%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.
- MSH LEGACY
- TRUENORTH
- All models of the group
Raw ratings are only placed side by side within one size and duct type, where they are comparable.
Source: AHRI Directory · as of
| Size and duct type | MSH LEGACY | TRUENORTH |
|---|---|---|
| Ducted, up to 1.5 tons | 2 · index 41% | 2 · index 30% |
| Ducted, 2 tons | 2 · index 53% | 2 · index 36% |
| Ducted, 2.5–3 tons | 4 · index 51% | 7 · index 41% |
| Ducted, 3.5–4.5 tons | 6 · index 54% | 2 · index 35% |
| Ducted, 5 tons and up | 4 · index 54% | None |
| Non-ducted, up to 1.5 tons | None | 6 · index 33% |
| Non-ducted, 2 tons | None | 2 · index 48% |
| Non-ducted, 2.5–3 tons | None | 3 · index 68% |
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
| Size and duct type | MSH LEGACYCold-climate score, best model | TRUENORTHCold-climate score, best model |
|---|---|---|
| Ducted, up to 1.5 tons | None on this board (0 of 2 models qualify) | 35.6(50 is the typical model of its size class)WLWHD(18)ND3MO2 of 2 models qualify · AHRI 218593150 |
| Ducted, 2 tons | None on this board (0 of 2 models qualify) | 50.1(50 is the typical model of its size class)WLWHD(24)ND3MO1 of 2 models qualify · AHRI 218593151 |
| Ducted, 2.5–3 tons | None on this board (0 of 4 models qualify) | 54.7(50 is the typical model of its size class)WLWHD(30)ND3MO5 of 7 models qualify · AHRI 218593152 |
| Ducted, 3.5–4.5 tons | None on this board (0 of 6 models qualify) | 51.6(50 is the typical model of its size class)WLUD60W/A-D(U)with ducted air handler WLCAT60H/NAA1 of 2 models qualify · AHRI 218461829 |
| Ducted, 5 tons and up | None on this board (0 of 4 models qualify) | No models in this size class |
| Non-ducted, up to 1.5 tons | No models in this size class | 73.1(50 is the typical model of its size class)WLWHD(18)ND3MO5 of 6 models qualify · AHRI 218593147 |
| Non-ducted, 2 tons | No models in this size class | 76.1(50 is the typical model of its size class)WLWHD(24)ND3MO1 of 2 models qualify · AHRI 218593148 |
| Non-ducted, 2.5–3 tons | No models in this size class | 73.7(50 is the typical model of its size class)WLWHD(42)ND3MO3 of 3 models qualify · AHRI 218593146 |
All-around best
| Size and duct type | MSH LEGACYAll-around score, best model | TRUENORTHAll-around score, best model |
|---|---|---|
| Ducted, up to 1.5 tons | 41.0(50 is the typical model of its size class) (higher)N4H5S18*K*AAA*with indoor coil EA*4X25L17A and furnace *80ESU0401712AAlso listed as R4H5S18*K*AAA2 of 2 models have all five ratings · AHRI 210300397 | 31.2(50 is the typical model of its size class)WLWHD(18)ND3MO2 of 2 models have all five ratings · AHRI 218593150 |
| Ducted, 2 tons | 52.7(50 is the typical model of its size class) (higher)N4H5S24*K*AAA*with ducted air handler FMA4X30**ALAlso listed as R4H5S24*K*AAA2 of 2 models have all five ratings · AHRI 210099429 | 45.9(50 is the typical model of its size class)WLWHD(24)ND3MO2 of 2 models have all five ratings · AHRI 218593151 |
| Ducted, 2.5–3 tons | 56.1(50 is the typical model of its size class) (higher)N4H5S30*K*AAA*with ducted air handler FMA4X30**ALAlso listed as R4H5S30*K*AAA4 of 4 models have all five ratings · AHRI 209692125 | 53.1(50 is the typical model of its size class)WLWHD(30)ND3MO6 of 6 models have all five ratings · AHRI 218593152 |
| Ducted, 3.5–4.5 tons | 60.7(50 is the typical model of its size class) (higher)N4H5S42*K*AAA*with ducted air handler FXM4X48**ALAlso listed as R4H5S42*K*AAA4 of 6 models have all five ratings · AHRI 209693273 | 43.5(50 is the typical model of its size class)WLUD60W/A-D(U)with ducted air handler WLCAT60H/NAA3 of 3 models have all five ratings · AHRI 218461829 |
| Ducted, 5 tons and up | 54.0(50 is the typical model of its size class)N4H5S60*K*AAA*with ducted air handler FJMA4*60L*DAlso listed as R4H5S60*K*AAA2 of 4 models have all five ratings · AHRI 210998915 | No models in this size class |
| Non-ducted, up to 1.5 tons | No models in this size class | 58.0(50 is the typical model of its size class)WLWHD(18)ND3MO6 of 6 models have all five ratings · AHRI 218593147 |
| Non-ducted, 2 tons | No models in this size class | 71.5(50 is the typical model of its size class)WLWHD(24)ND3MO2 of 2 models have all five ratings · AHRI 218593148 |
| Non-ducted, 2.5–3 tons | No models in this size class | 70.2(50 is the typical model of its size class)WLWHD(42)ND3MO3 of 3 models have all five ratings · AHRI 218593146 |
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.
| Rating | MSH LEGACY | TRUENORTH |
|---|---|---|
| COP at 5°F | beats 83% · 2.28N4H5S42*K*AAA*Also listed as R4H5S42*K*AAADucted, 3.5–4.5 tons | beats 89% · 2.21WLWHD(18)ND3MONon-ducted, up to 1.5 tons |
| Capacity retention at 5°F | beats 36% · 50%N4H5S60*K*AAA*Also listed as R4H5S60*K*AAADucted, 5 tons and up | beats 85% · 89%WLWHD(30)ND3MODucted, 2.5–3 tons |
| HSPF2 | beats 40% · 8.1N4H5S30*K*AAA*Also listed as R4H5S30*K*AAADucted, 2.5–3 tons | beats 82% · 10.0WLWHD(36)ND3MONon-ducted, 2.5–3 tons |
| SEER2 | beats 40% · 15.2N4H5S42*K*AAA*Also listed as R4H5S42*K*AAADucted, 3.5–4.5 tons | beats 66% · 21.0WLWHD(24)ND3MONon-ducted, 2 tons |
| EER2 | beats 92% · 12.5N4H5S42*K*AAA*Also listed as R4H5S42*K*AAADucted, 3.5–4.5 tons | beats 84% · 12.5WLWHD(30)ND3MONon-ducted, 2.5–3 tons |
| Heating capacity at 5°F | beats 31% · 28,400 Btu/hN4H5S60*K*AAA*Also listed as R4H5S60*K*AAADucted, 5 tons and up | beats 84% · 13,800 Btu/hWLWHD(18)ND3MONon-ducted, up to 1.5 tons |