The maker's photo for this series, not this exact size; the outdoor unit grows with capacity
Mitsubishi Electric · Floor Mount
MFZ-KX12NL / SUZ-AA12NL
~$3,722approximate retailer price at last check, equipment only
Best forMild-to-moderate climates where a floor console is the only form factor that fits.
The same MFZ-KX12NL floor console as the Hyper-Heat version, paired here with the standard SUZ-AA12NL condenser. It rates 19.6 SEER2 and 8.7 HSPF2 with 12,000 BTU of cooling and 15,000 BTU of heating, and heats down to -4°F. That heating figure is the compromise: 8.7 HSPF2 is a long way below the 10 you get with the HZ condenser, so this version fits a mild or mixed climate rather than a cold one. It saves about $640 over the Hyper-Heat pairing and shares the Comfort-app Wi-Fi and the low-discharge airflow that makes console units comfortable in sunrooms and basements. Compared with the Fujitsu AGUH12 it is dearer and less efficient but carries Mitsubishi's dealer network.
At 5°F it still makes 52% of its rated heat, according to the certified NEEP listing for this pairing. Mitsubishi Electric rates it to keep running down to -4°F.
Pairing: SUZ-AA12NL with MFZ-KX12NL. Checked October 8, 2026 on NEEP's ccASHP list; a different head or condenser posts different numbers.
The standard version costs $3,722 against $4,364 and has higher SEER2 (19.6 against 17.2) but lower HSPF2 (8.7 against 10). Its NEEP capacity drops to 7,800 BTU at 5°F against 15,000 for the Hyper-Heat.
In a cold climate, no. NEEP lists 15,000 BTU at 47°F and 7,800 BTU at 5°F, about 52%, with COP 2.29. The maker's floor is -4°F, the same as every standard SUZ-AA12NL pairing.
Standard is 5-year parts and 7-year compressor. 10 years requires a licensed contractor and online registration.
Series photoMitsubishi Electric · Floor Mount
~$4,364
Cold-climate rooms with no usable wall space that need real heating output from a low unit.
Series photoMitsubishi Electric · Single-Zone
~$3,786
Cold-climate living rooms and open plans that need more than a 12k head but not a full 18k.
Series photoMitsubishi Electric · Concealed Duct
~$3,790
Hiding one air handler in a soffit or attic and feeding a few small rooms by ductwork.