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Spec	Mitsubishi FX Hyper-Heating 12,000 BTU 230V	Senville Aura 12,000 BTU 230V
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Our score	Not reviewed yet	SCORE7.5 / 10
Our take	Nearly twice the MrCool 12k's heat at 5°F and operation to -22°F, from a licensed contractor only. Bought online and self-installed, it has no factory warranty.	The Senville to buy for real winters, keeping 96% of its rating at 5°F with heat published to -22°F. Budget a licensed installer, because the warranty requires one.
Nominal size	12,000 BTU	12,000 BTU
Voltage	230V	230V
Rated heat at 47°F	13,200 BTU/h	12,000 BTU/h
Heat at 17°F	9,300 BTU/h	12,000 BTU/hbest
Heat at 5°F	16,200 BTU/hbest	11,500 BTU/h
Lowest heating temp	-22°F	-22°F
Max heat at lowest temp	8,700 BTU/hbest	5,900 BTU/h
SEER2	29.9best	25.4
HSPF2 (Region IV)	12.4best	10.5
Install type	Flare	Flare
Max line run	65 ft	82 ftbest
Warranty covers owner install	No	No
Warranty, parts	5 yr	5 yr
Warranty, compressor	7 yr	10 yrbest
ENERGY STAR Cold Climate	Yes	Yes
ENERGY STAR	Yes	Yes
Refrigerant	R-454B	R-454B
Watch out for	GX, JX, the older R-410A FS/GS/GL and the P-Series are different units; confirm the MUZ-FX12NLHZ outdoor unit on any quote. Mitsubishi's warranty requires a licensed HVAC contractor install; online or auction purchases outside that get no warranty support.	The Amazon Aura listings don't state refrigerant. The 12k listing (SENA-12HF-16) shows a 25.5 efficiency figure that matches the older R-410A Aura and a 2 yr parts / 7 yr compressor warranty field; confirm model and refrigerant before you pay. Current R-454B wall pairings are SENA-xxHF-OG + SENA-xxHF-IGG; older R-410A pairings end /OQ + /IQ. Senville's site lists higher HSPF2 and 47°F heat than the AHRI figures on NEEP; we use the certified numbers. Senville's FAQ says no to owner installs, and the warranty requires a licensed HVAC contractor.
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