Mitsubishi Electric · Multi-Zone
MXZ-4D30NL + 4x MSZ-FX09NL
~$7,961approximate retailer price at last check, equipment only
Best forA four-room home in a moderate climate that wants a single outdoor unit and Mitsubishi heads.
A standard-efficiency four-port multi in the R-454B D-series, built for the common case of four modest rooms off a single outdoor unit. It is not an H2i unit: heating operation is rated from 5°F up, and NEEP lists 19,800 BTU/h at 5°F against a 28,600 BTU/h rating at 47°F, about 69%. Certified numbers for wall-type heads are 21.0 SEER2 and 10.0 HSPF2. Here it is priced with four 9k MSZ-FX09NL heads, 36,000 BTU of indoor capacity on a 30,000 BTU condenser, which is inside Mitsubishi's 12,000 to 36,000 BTU connection window. The system is about $7,960 before labor. For cold climates the SM-series with H2i costs more still, and the practical alternative is two 2-zone systems; this one is the lower-cost route to four zones from one condenser.
At 5°F it still makes 69% of its rated heat, according to the certified NEEP listing for this pairing. Mitsubishi Electric rates it to keep running down to 5°F.
Pairing: MXZ-4D30NL with non-ducted heads. Checked October 8, 2026 on NEEP's ccASHP list; a different head or condenser posts different numbers.
NEEP lists 28,600 BTU at 47°F and 19,800 BTU at 5°F, about 66% of the 30,000 nameplate, with COP 2.06. Mitsubishi rates it to 5°F and it is not ENERGY STAR cold climate certified. For deep-cold zones the Hyper-Heat 2-zone is the stronger choice.
The condenser accepts 12,000 to 36,000 BTU of connected indoor capacity, with up to 230 ft of total piping and a 49 ft height difference. A base-pan heater is built in to prevent freezing.
It covers the condenser plus four 9k MSZ-FX09NL heads. Four runs of line set, a disconnect and labor are extra.
No, it is a contractor install, and the 10-year parts and compressor term needs a licensed install plus online registration. Without that the standard terms are 5-year parts and 7-year compressor.
Four 9k heads total 36,000 BTU, which is the top of the condenser's accepted range. In practice not every room calls for full output at once, so a multi like this works when loads are small and varied.
Mitsubishi Electric · Multi-Zone
~$5,518
Two rooms in a cold climate where wall space allows only one outdoor unit and the budget extends to Mitsubishi.
Mitsubishi Electric · Multi-Zone
~$4,481
Cold-climate homes that need three rooms conditioned off one outdoor unit and want the most proven hyper-heat multi on the market.
Series photoMitsubishi Electric · Single-Zone
~$4,997
Large cold-climate spaces where one premium head with maximum heat output is wanted.