MSH LEGACY heat pump efficiency: 7 outdoor models compared

MSH LEGACY has 7 heat pump outdoor models certified with this refrigerant group, in 7 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 MSH LEGACY makes. MSH LEGACY has no QMID (IRS Qualified Manufacturer ID) on file, so it is not ranked against other manufacturers.

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ManufacturerData as of Oct 9, 2026updated Oct 10, 2026 · sources

Outdoor models: 7
AHRI certifications: 7
Efficiency index: 34%; Typical model vs same-size, same-type peers (7 models)
Meet CEE 2025: 0%; 0 models

How MSH LEGACY 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.

MSH LEGACY against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of MSH LEGACY’s own modelsMSH LEGACY is strongest on EER2 (its typical model beats 56% of comparable models) and weakest on capacity retention at 5°F (11%).

MSH LEGACY
Middle half of its models
Other ranked manufacturers

Source: AHRI Directory, NEEP · as of Oct 9, 2026

Average peer percentile of MSH LEGACY’s models
Rating	Beats comparable models	Rank	Raw median
Efficiency index7 models scored	34%	Not ranked	—
COP at 5°F7 models scored	25%	Not ranked	1.80
Capacity retention at 5°F7 models scored	11%	Not ranked	41%
HSPF27 models scored	24%	Not ranked	7.2
SEER27 models scored	39%	Not ranked	15.2
EER27 models scored	56%	Not ranked	11.5
Heating capacity at 5°F7 models scored	15%	Not ranked	18,200 Btu/h

Standards met

Share of MSH LEGACY’s models with at least one qualifying certification
Standard	Share	Models
CEE 2025 Tier 1 (Split ASHP)	0%	0
CEE 2026 Tier 1 (Split ASHP)	0%	0
CEE Advanced Tier (Split ASHP)	0%	0
Xcel Energy Colorado cold-climate ASHP (2025)	0%	0
DOE Cold Climate Heat Pump Challenge	0%	0
ENERGY STAR Cold Climate	0%	0

Sizes and duct types offered

Models per peer group, and how they score against the other models of that group.

MSH LEGACY’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

MSH LEGACY (median, middle 50%, 10th–90th)
All models of the group

Source: AHRI Directory · as of Oct 9, 2026

Share of comparable models beaten, per peer group
Size and duct type	Models	Index	COP@5°F	HSPF2	SEER2
Ducted, 2 tons	1	21%	7%	12%	28%
Ducted, 2.5–3 tons	2	27%	9%	20%	33%
Ducted, 3.5–4.5 tons	4	40%	38%	29%	44%

Every MSH LEGACY model in the market

MSH LEGACY’s 7 models with a known size and duct type, over the shape of the whole catalog.

MSH LEGACY models by size and ratingColoured: MSH LEGACY · grey shapes: all 14,508 models · lines: catalog medians by size

MSH LEGACY models
Ducted median by size
Non-ducted median by size
Every model at each size (width = count)
Standard threshold

Dots: 7 msh legacy 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, size	Models	10th pct.	25th	Median	75th	90th
Ducted, 0.5 tons	826	1.64	1.71	1.75	1.85	2.24
Ducted, 1 ton	407	1.80	1.90	2.05	2.41	2.45
Ducted, 1.5 tons	992	1.75	1.86	2.00	2.17	2.40
Ducted, 2 tons	999	1.75	1.86	2.00	2.18	2.30
Ducted, 2.5 tons	1,040	1.70	1.80	2.00	2.10	2.36
Ducted, 3 tons	696	1.80	1.90	2.00	2.10	2.42
Ducted, 3.5 tons	864	1.70	1.80	2.00	2.10	2.46
Ducted, 4 tons	727	1.80	1.86	2.00	2.12	2.40
Ducted, 4.5 tons	690	1.70	1.80	1.90	2.10	2.20
Ducted, 5 tons	86	1.89	2.00	2.10	2.10	2.10
Non-ducted, 0.5 tons	1,186	1.75	1.80	1.90	2.00	2.22
Non-ducted, 1 ton	1,343	1.80	1.80	1.99	2.10	2.21
Non-ducted, 1.5 tons	1,261	1.80	1.80	2.00	2.10	2.31
Non-ducted, 2 tons	761	1.80	1.98	2.00	2.10	2.30
Non-ducted, 2.5 tons	403	1.80	1.85	2.00	2.00	2.10
Non-ducted, 3 tons	473	1.90	1.98	2.00	2.03	2.20
Non-ducted, 3.5 tons	280	2.00	2.00	2.00	2.05	2.10
Non-ducted, 4 tons	204	1.96	2.00	2.05	2.10	2.11
Non-ducted, 4.5 tons	78	1.90	1.91	1.95	2.01	2.01
Non-ducted, 5 tons	84	1.99	2.00	2.05	2.20	2.20

Source: AHRI Directory · as of Oct 9, 2026

Top MSH LEGACY 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

No MSH LEGACY model keeps at least 70% of its heat at 5°F with all three cold-climate ratings.

All-around best

Top 5 MSH LEGACY 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 model	Size · type	Cap. 5/47	COP@5°F	HSPF2	SEER2	EER2	Meets	Combos	AHRI ref.	Compared with	Score	Heating half	Cooling half	Cold-climate score
1PHB560000H000B*MSH LEGACY · Quiet Comfort HP	4.5 tons56,000 Btu/h · Ducted	46%	2.00	7.7	15.5	11.5	None	1	217154470	Ducted, 3.5–4.5 tons	46.0	36.3	55.7	Not a pick
2PHB560000K000B*MSH LEGACY · Quiet Comfort HP	4.5 tons56,000 Btu/h · Ducted	46%	2.00	7.7	15.5	11.5	None	1	217154458	Ducted, 3.5–4.5 tons	45.9	36.2	55.7	Not a pick
3PHB548000H000B*MSH LEGACY · Quiet Comfort HP	4 tons46,500 Btu/h · Ducted	41%	1.80	7.2	15.2	11.5	None	1	217154445	Ducted, 3.5–4.5 tons	34.4	16.8	52.0	Not a pick
4PHB548000K000B*MSH LEGACY · Quiet Comfort HP	4 tons46,500 Btu/h · Ducted	41%	1.80	7.2	15.2	11.5	None	1	217154433	Ducted, 3.5–4.5 tons	34.4	16.7	52.0	Not a pick
5PHB536000H000B*MSH LEGACY · Quiet Comfort HP	3 tons35,200 Btu/h · Ducted	41%	1.70	7.2	15.2	11.5	None	1	217154420	Ducted, 2.5–3 tons	27.2	12.7	41.7	Not a pick

Best model on each rating

MSH LEGACY’s model with the highest peer percentile on each rating, ranked by that one rating only
Rating	Model	Value	Compared with	Beats	AHRI ref.
COP at 5°F	PHB560000K000B*	2.00	Ducted, 3.5–4.5 tons	54%	217154458
Capacity retention at 5°F	PHB560000H000B*	46%	Ducted, 3.5–4.5 tons	17%	217154470
HSPF2	PHB560000K000B*	7.7	Ducted, 3.5–4.5 tons	34%	217154458
SEER2	PHB560000K000B*	15.5	Ducted, 3.5–4.5 tons	42%	217154458
EER2	PHB548000K000B*	11.5	Ducted, 3.5–4.5 tons	57%	217154433
Heating capacity at 5°F	PHB560000K000B*	25,800 Btu/h	Ducted, 3.5–4.5 tons	27%	217154458

All 7 MSH LEGACY models in Explore

MSH LEGACY 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.

MSH LEGACY: 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 type	Cold-climate pickCold-climate score, best model	All-around bestAll-around score, best model
Ducted, 2 tons	None on this board (0 of 1 models qualify)	20.5(50 is the typical model of its size class)PHB524000K000B*1 of 1 models have all five ratings · AHRI 217154396
Ducted, 2.5–3 tons	None on this board (0 of 2 models qualify)	27.2(50 is the typical model of its size class)PHB536000H000B*2 of 2 models have all five ratings · AHRI 217154420
Ducted, 3.5–4.5 tons	None on this board (0 of 4 models qualify)	46.0(50 is the typical model of its size class)PHB560000H000B*4 of 4 models have all five ratings · AHRI 217154470

All-around board, every manufacturer

Newest MSH LEGACY certifications

By AHRI reference number; AHRI issues references in increasing order.

The 5 most recently certified MSH LEGACY outdoor models
Outdoor model	Size · type	COP@5°F	Cap. 5/47	HSPF2	SEER2	Meets	Combos	AHRI ref.
PHB560000H000B*MSH LEGACY · Quiet Comfort HP	4.5 tons56,000 Btu/h · Ducted	2.00	46%	7.7	15.5	None	1	217154470
PHB560000K000B*MSH LEGACY · Quiet Comfort HP	4.5 tons56,000 Btu/h · Ducted	2.00	46%	7.7	15.5	None	1	217154458
PHB548000H000B*MSH LEGACY · Quiet Comfort HP	4 tons46,500 Btu/h · Ducted	1.80	41%	7.2	15.2	None	1	217154445
PHB548000K000B*MSH LEGACY · Quiet Comfort HP	4 tons46,500 Btu/h · Ducted	1.80	41%	7.2	15.2	None	1	217154433
PHB536000H000B*MSH LEGACY · Quiet Comfort HP	3 tons35,200 Btu/h · Ducted	1.70	41%	7.2	15.2	None	1	217154420

Shares hardware with

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

No shared hardware found for MSH LEGACY in this group.

Compare MSH LEGACY

Manufacturers of a similar size, side by side.

Compare with any manufacturer

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