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SpecMrCool Universal 3-ton R-454B (UHP18036-O + UAH18036-O)Senville Aura 36K Multi-Zone Condenser (SENA-36HF-MOA)
PhotoMrCool Universal 3-ton R-454B (UHP18036-O + UAH18036-O)Senville Aura 36K Multi-Zone Condenser (SENA-36HF-MOA)
Our scoreSCORE6.7 / 10SCORE6.8 / 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.Up to five heads and 36,000 Btu/h at 5°F, but a 10,000 Btu/h minimum overshoots small rooms on mild days. Pro install.
Nominal size36,000 BTU36,000 BTU
Voltage230V230V
Rated heat at 47°F37,000 BTU/h36,000 BTU/h
Heat at 17°F33,000 BTU/h38,000 BTU/hbest
Heat at 5°F37,400 BTU/hbest36,000 BTU/h
Lowest heating temp-22°F-22°F
Max heat at lowest temp27,600 BTU/hbest22,400 BTU/h
SEER21823best
HSPF2 (Region IV)1010.7best
Install typeFlareFlare
Max line run246 ftn/a
Warranty covers owner installNoNo
Warranty, parts10 yrbest5 yr
Warranty, compressor10 yr10 yr
ENERGY STAR Cold ClimateYesYes
ENERGY STARYesYes
RefrigerantR-454BR-454B
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.MOA outdoor units are listed as R-454B on Senville's pages and NEEP; NEEP lists the MOB units as R-410A, and an owner of an earlier SENA-28HF-MOA reports R-410A. Confirm the refrigerant on the label. Senville's FAQ says owner installs are not supported; the warranty certificate requires a licensed professional, and labor is never covered.
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