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SpecMrCool Universal 3-ton R-454B (UHP18036-O + UAH18036-O)Gree Livo R32 36,000 BTU 230V
PhotoMrCool Universal 3-ton R-454B (UHP18036-O + UAH18036-O)Gree Livo R32 36,000 BTU 230V
Our scoreSCORE6.7 / 10SCORE6.5 / 10
Our take37,400 Btu/h at 5°F and 27,600 max at -22°F on NEEP. A strong whole-house size for cold climates if a pro installs it. We don't have a verified Amazon listing for this size.The largest Livo, with 21,000 BTU/h still listed at -13°F. Contractor install only.
Nominal size36,000 BTU36,000 BTU
Voltage230V230V
Rated heat at 47°F37,000 BTU/h34,000 BTU/h
Heat at 17°F33,000 BTU/hbest27,400 BTU/h
Heat at 5°F37,400 BTU/hbest24,600 BTU/h
Lowest heating temp-22°Fbest-13°F
Max heat at lowest temp27,600 BTU/hbest21,000 BTU/h
SEER21821best
HSPF2 (Region IV)10best8.5
Install typeFlareFlare
Max line run246 ftbest131 ft
Warranty covers owner installNoNo
Warranty, parts10 yrbest5 yr
Warranty, compressor10 yrbest7 yr
ENERGY STAR Cold ClimateYesYes
ENERGY STARYesYes
RefrigerantR-454BR-32
Watch out forThis is the 2nd-gen R-454B Universal (model numbers ending -O); most owner history online is about the discontinued R-410A first generation. MRCOOL's printed warranty requires a professional installer and an authorized dealer; the Central Ducted Hyper Heat 2nd Gen warranty allows owner installs with the Quick Connect line set. NEEP ratings with MRCOOL cased coils on a furnace are lower than with the matched UAH air handler, and some coil pairings aren't ENERGY STAR Cold Climate.The LIVO+ (LIVS..., R-410A, 16 SEER) and Livo Gen 3 / Gen 4 (4LIV, R-410A) are different units; confirm both model numbers end R32AO and R32AH. The 18K Amazon listing titled "Gree R32 LIVO+" reports the R-410A LIVS18HP230V1B; we don't link it. Gree's warranty applies only to installs by a state certified or licensed HVAC contractor, and claims are contractor-only.
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