Mitsubishi Hyper-Heat FX 12,000 BTU
#1 in 12,000 BTUFull review
Mitsubishi’s flagship cold-climate system: it makes more than its rated heat at 5 °F and keeps heating to −22 °F. For a home that relies on it as the main heat through a cold winter.
13 Mitsubishi mini-splits ranked. Each one is scored and ranked against every brand in its size, so "#3 mid-size" means third of all mid-size mini-splits here, not third among Mitsubishi's own.
Mitsubishi makes 13 current mini-splits: 3 9,000 BTU, 3 12,000 BTU, 3 18,000 BTU, 3 24,000 BTU and 1 36,000 BTU. Its best-rated model in each size: the Mitsubishi Hyper-Heat FX 9,000 BTU (#2 of 27 9,000 BTU, rated 4.9), the Mitsubishi Hyper-Heat FX 12,000 BTU (#1 of 29 12,000 BTU, rated 4.9), the Mitsubishi Hyper-Heat FX 18,000 BTU (#2 of 22 18,000 BTU, rated 4.7), the Mitsubishi Hyper-Heat FX 24,000 BTU (#1 of 19 24,000 BTU, rated 4.6) and the Mitsubishi GX 36,000 BTU (#3 of 5 36,000 BTU, rated 2.9). Sizes run from 9,000 to 36,000 BTU. Sold for professional installation. 12 of them are on the ENERGY STAR Cold Climate list.
Prices were last checked October 21, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Mitsubishi mini-splits 13
- Mitsubishi Hyper-Heat FX 12,000 BTU#1 12,000 BTUFull review
Mitsubishi’s flagship cold-climate system: it makes more than its rated heat at 5 °F and keeps heating to −22 °F. For a home that relies on it as the main heat through a cold winter.
No price16,20012.4Pro install- - Mitsubishi Hyper-Heat FX 9,000 BTU#2 9,000 BTUFull review
Mitsubishi’s flagship cold-climate system: it makes more than its rated heat at 5 °F and keeps heating to −22 °F. For a home that relies on it as the main heat through a cold winter.
No price14,70013.3Pro install- - Mitsubishi Hyper-Heat FX 18,000 BTU#2 18,000 BTUFull review
Mitsubishi’s flagship cold-climate system: it makes more than its rated heat at 5 °F and keeps heating to −22 °F. For a home that relies on it as the main heat through a cold winter.
No price23,60011.1Pro install- - Mitsubishi Hyper-Heat FX 24,000 BTU#1 24,000 BTUFull review
Mitsubishi’s flagship cold-climate system: it makes more than its rated heat at 5 °F and keeps heating to −22 °F. For a home that relies on it as the main heat through a cold winter.
No price26,60010.5Pro install- - Mitsubishi Hyper-Heat GX 9,000 BTU#9 9,000 BTUFull review
Mitsubishi’s mainstream Hyper-Heat line keeps its full rated heat at 5 °F and heats down to −13 °F. The FX goes further in deep cold and efficiency.
No price9,60010.2Pro install- - Mitsubishi Hyper-Heat GX 12,000 BTU#9 12,000 BTUFull review
Mitsubishi’s mainstream Hyper-Heat line keeps its full rated heat at 5 °F and heats down to −13 °F. The FX goes further in deep cold and efficiency.
No price12,30010Pro install- - Mitsubishi Hyper-Heat GX 18,000 BTU#7 18,000 BTUFull review
Mitsubishi’s mainstream Hyper-Heat line keeps its full rated heat at 5 °F and heats down to −13 °F. The FX goes further in deep cold and efficiency.
No price19,00010Pro install- - Mitsubishi Hyper-Heat GX 24,000 BTU#5 24,000 BTUFull review
Mitsubishi’s mainstream Hyper-Heat line keeps its full rated heat at 5 °F and heats down to −13 °F. The FX goes further in deep cold and efficiency.
No price21,20010Pro install- - Mitsubishi GX 9,000 BTU#15 9,000 BTUFull review
Mitsubishi’s standard line, quiet and efficient, for milder winters: it loses a good share of its heat in deep cold and stops heating at −5 °F.
No price8,10010.9Pro install- - Mitsubishi GX 12,000 BTU#14 12,000 BTUFull review
Mitsubishi’s standard line, quiet and efficient, for milder winters: it loses a good share of its heat in deep cold and stops heating at −5 °F.
No price10,10010.7Pro install- - Mitsubishi GX 18,000 BTU#14 18,000 BTUFull review
Mitsubishi’s standard line, quiet and efficient, for milder winters: it loses a good share of its heat in deep cold and stops heating at −5 °F.
No price15,20010.3Pro install- - Mitsubishi GX 24,000 BTU#11 24,000 BTUFull review
Mitsubishi’s standard line, quiet and efficient, for milder winters: it loses a good share of its heat in deep cold and stops heating at −5 °F.
No price19,40010.3Pro install- - Mitsubishi GX 36,000 BTU#3 36,000 BTUFull review
Mitsubishi’s standard line, quiet and efficient, for milder winters: it loses a good share of its heat in deep cold and stops heating at −5 °F.
No price20,6008.5Pro install-
