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Pick two to four models. The best figure in each row is marked, and every number comes from the maker, NEEP or ENERGY STAR. Copy the URL to share a comparison.

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SpecMrCool DIY 5th Gen 18,000 BTU 230VGree Sapphire R32 18,000 BTU 230V
PhotoMrCool DIY 5th Gen 18,000 BTU 230VGree Sapphire R32 18,000 BTU 230V
Our scoreSCORE6.9 / 10SCORE7.5 / 10
Our takeThe size we'd look at first for a garage on a 230V circuit: 12,800 BTU/h at 5°F and more heat at -13°F than the 24k. We don't have a verified Amazon listing for this size.18,000 BTU/h at 5°F against the Livo 18K's 12,100, for a cold-climate room with a licensed contractor.
Nominal size18,000 BTU18,000 BTU
Voltage230V230V
Rated heat at 47°F18,000 BTU/h18,600 BTU/h
Heat at 17°F13,400 BTU/h19,500 BTU/hbest
Heat at 5°F12,800 BTU/h18,000 BTU/hbest
Lowest heating temp-13°F-22°Fbest
Max heat at lowest temp12,200 BTU/hbest10,800 BTU/h
SEER222.527.5best
HSPF2 (Region IV)11.5best10
Install typeQuick-connectFlare
Line set in box25 ftn/a
Max line run75 ft131 ftbest
Warranty covers owner installYesNo
Warranty, parts5 yr5 yr
Warranty, compressor7 yr7 yr
ENERGY STAR Cold ClimateYesn/a
ENERGY STARYesn/a
RefrigerantR-454BR-32
Watch out forMRCOOL also called its older R-410A 4th Gen DIY "E Star"; confirm R-454B and a model number of the form DIY-...D25-O. DIYS- is the cheaper DIY Select and EZPRO- is the Easy Pro; a listing that says "5th Gen" and "Select" is the Select. The manual says the line sets install once; reconnecting them, or the pipes at the outdoor unit, voids the warranty.Amazon Sapphire titles show old SEER figures ("21.5 SEER" on the 24K); confirm the SAPxxHP230V1R32AH/AO model numbers. Gree's submittal prints lower 17°F figures than the certified NEEP ratings; go by NEEP. Gree's warranty applies only to installs by a state certified or licensed HVAC contractor, and claims are contractor-only.
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