ENERGY STAR cold-climate list

Mitsubishi Electric cold-climate mini-splits

The short answer

Mitsubishi Electric has 463 ENERGY STAR cold-climate certified system combinations. The median one is rated 29,000 BTU/h at 5°F, which is 85% of its 47°F capacity (the all-brand median is 88%), with a median HSPF2 of 9.6. Among the 80 brands with 50+ systems, it ranks #51 for keeping capacity in the cold.

463Certified systems

182Outdoor models

9.6Median HSPF2 (best 13.3)

1.9Median COP at 5°F

409ENERGY STAR Most Efficient listings

Capacity as it gets colder

Solid dots: 5°F and 47°F medians, joined by the straight line our model uses. Open dot: the 17°F median as reported, which is a separate test condition and often falls below the 5°F maximum-capacity figure.

Across the 463 systems, 5°F capacity runs from 7,700 to 62,000 BTU/h, so the model matters more than the badge. Refrigerants used: R-410A, R-454B.

Highest-HSPF2 Mitsubishi Electric systems

Top 12 unique outdoor + indoor pairings by HSPF2
Outdoor model	Indoor model	HSPF2	BTU/h 47°F	BTU/h 17°F	BTU/h 5°F	COP 5°F	AHRI ref
MUZ-FX09NLHZ***	MSZ-FX09NL***	13.3	12,000	7,700	14,700	2.2	215611125
MUZ-FX09NLHZ2***	MSZ-FX09NL***	13.3	12,000	7,700	14,700	2.2	216798015
MUZ-FX06NLHZ***	MSZ-FX06NL***	13	9,000	6,000	12,600	2.38	215611124
MUZ-FX06NLHZ2***	MSZ-FX06NL***	13	9,000	6,000	12,600	2.38	216798014
MUZ-FX12NLHZ***	MSZ-FX12NL***	12.4	13,200	9,300	16,200	2.2	215611126
MUZ-FX12NLHZ2***	MSZ-FX12NL***	12.4	13,200	9,300	16,200	2.2	216798016
MXZ-SM36NLHZ-**		12	42,000	32,600	42,000	2	217177364
MXZ-SM36NLHZ***		12	42,000	32,600	42,000	2	215685464
PUMY-HL36NKMU***		12	42,000	32,600	42,000	2	216797281
MXZ-SM36NAMHZ2***		12	42,000	32,600	38,500	2	213248831
PUMY-HP36NKMU2***		12	42,000	32,600	38,500	2	213248962
MUZ-FS06NA***	MSZ-FS06NA***	11.9	8,700	5,900	10,500	2.46	209832199

Check the AHRI reference at ahridirectory.org before buying. We do not list prices: none of our sources publishes them.

Keep going

Put your ZIP into the cost-to-heat calculator to see what a median cold-climate system would cost to run where you live.
Sizing: how many BTU/h you need at your design temperature, compared with the 5°F capacity above.
Incentives and rebates and DIY vs installed for the buying decision.
Compare with similar brands: TOSOT, Lennox, Innovair, GREE.

Questions people ask

How many Mitsubishi Electric mini-splits are ENERGY STAR cold-climate certified?

Mitsubishi Electric has 463 certified cold-climate system combinations across 182 outdoor models in the EPA's ENERGY STAR mini-split list, first certified 2024-01-18 and most recently 2026-09-01.

How well do Mitsubishi Electric units heat at 5°F?

The median Mitsubishi Electric system is rated 29,000 BTU/h at 5°F against 34,000 BTU/h at 47°F, or 85% (the all-brand median is 88%). Median COP at 5°F is 1.9.