Mitsubishi Electric heat pumps: how do their ratings compare?

A typical Mitsubishi Electric heat pump beats 60% of similar heat pumps (same size and type), which is well above average. Mitsubishi Electric has 156 heat pump models in this list.

Covers heat pumps sold new today (R-454B and R-32 refrigerant). See older R-410A models · Updated Oct 10, 2026

Overall score

60%

of similar heat pumps beaten by its typical model

Well above average

Ranked 6 among brands with a QMID on file. Based on 217 models with every rating.

Mitsubishi Electric, rating by ratingStrongest on winter-long heating efficiency (beats 66%), weakest on heating power kept at 5°f (beats 54%).

Efficiency on a 5°F dayCOP at 5°FBeats 55%
Heating power kept at 5°FCapacity at 5°F vs 47°FBeats 54%
Winter-long heating efficiencyHSPF2Beats 66%
Summer-long cooling efficiencySEER2Beats 63%
Hot-day cooling efficiencyEER2Beats 60%

Average (50%)

Each bar: the share of similar heat pumps a typical model beats on that rating.

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Rebate standards

Share of this brand’s models that meet the efficiency levels rebate programs use. Programs can have other rules too.

81%
meet CEE 2025 Tier 1, the level many utility rebates use.
126 models. All brands: 57%.
See them
67%
meet Xcel Energy Colorado’s cold-climate rebate levels.
104 models. All brands: 53%.
See them
10%
reach the cold-climate tier: full heating output and a COP of 2.1 or more at 5°F.
15 models. All brands: 3%.
See them

Top Mitsubishi Electric cold-climate picks, by size

Only units that keep at least 70% of their heat at 5°F, ranked on heat kept, efficiency at 5°F and seasonal efficiency (HSPF2), against units their size.

Showing Ductless, 3.5–4.5 tons (39,000–56,999 Btu/h cooling). What size is my system?

13 of Mitsubishi Electric’s 18 models of this size and type qualify.

1MXZ-SM48NLHZ***Mitsubishi ElectricAlso listed as PUMY-HL48NKMU, MXZ-SM48NLHZ-4 tons · 48,000 Btu/h · DuctlessKeeps 100% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
Heat kept at 5°F
100% (Capacity at 5°F vs 47°F)
Top 10%
Efficiency at 5°F
2.00 (COP at 5°F)
Below the middle
Seasonal efficiency
11.5 (HSPF2)
Top 10%
78.4score / 100
2MXZ-SM42NLHZ***Mitsubishi ElectricAlso listed as PUMY-HL42NKMU, MXZ-SM42NLHZ-3.5 tons · 42,000 Btu/h · DuctlessKeeps 100% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
Heat kept at 5°F
100% (Capacity at 5°F vs 47°F)
Top 10%
Efficiency at 5°F
2.00 (COP at 5°F)
Below the middle
Seasonal efficiency
11.1 (HSPF2)
Top 10%
77.6score / 100
3MXZ-SM48NL***Mitsubishi ElectricAlso listed as PUMY-L48NKMU, MXZ-SM48NL-4 tons · 48,000 Btu/h · DuctlessKeeps 71% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
Heat kept at 5°F
71% (Capacity at 5°F vs 47°F)
Below the middle
Efficiency at 5°F
2.10 (COP at 5°F)
Great
Seasonal efficiency
10.4 (HSPF2)
Good
52.5score / 100
4PUZ-AK48NLHZ2***with ductless indoor unit PLA-AE48NLMitsubishi Electric4 tons · 48,000 Btu/h · DuctlessKeeps 100% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
Heat kept at 5°F
100% (Capacity at 5°F vs 47°F)
Top 10%
Efficiency at 5°F
1.90 (COP at 5°F)
Below the middle
Seasonal efficiency
9.6 (HSPF2)
Below the middle
42.1score / 100
5PUZ-AK42NLHZ2***with ductless indoor unit PLA-AE42NLMitsubishi Electric3.5 tons · 42,000 Btu/h · DuctlessKeeps 100% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
Heat kept at 5°F
100% (Capacity at 5°F vs 47°F)
Top 10%
Efficiency at 5°F
1.80 (COP at 5°F)
Below the middle
Seasonal efficiency
9.6 (HSPF2)
Below the middle
40.1score / 100

These are certified test ratings, not a recommendation for your home. The right size comes from a load calculation by a contractor.

What to do next

The advanced view has Mitsubishi Electric’s ranks on each rating, its models inside every size and type, cold-weather curves and its newest certifications.

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