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SpecSenville Aura 28K Multi-Zone Condenser (SENA-28HF-MOA)MrCool Universal 2.5-ton R-454B (UHP18030-O + UAH18030-O)
PhotoSenville Aura 28K Multi-Zone Condenser (SENA-28HF-MOA)MrCool Universal 2.5-ton R-454B (UHP18030-O + UAH18030-O)
Our scoreSCORE6.8 / 10SCORE6.7 / 10
Our takeHolds its full 27,000 Btu/h rating at 5°F, about 50% more than MrCool's DIY 27K, but needs a licensed installer and turns down only to 8,400 Btu/h.33,200 Btu/h at 5°F, slightly above its 47°F rating, with 10.8 HSPF2, the best in the line. Warranty requires a professional installer and an authorized dealer. We don't have a verified Amazon listing for this size.
Nominal size28,000 BTU30,000 BTU
Voltage230V230V
Rated heat at 47°F27,000 BTU/h33,000 BTU/h
Heat at 17°F30,000 BTU/hbest24,000 BTU/h
Heat at 5°F27,000 BTU/h33,200 BTU/hbest
Lowest heating temp-22°F-22°F
Max heat at lowest temp14,000 BTU/h17,900 BTU/hbest
SEER223best17.2
HSPF2 (Region IV)10.510.8best
Install typeFlareFlare
Max line runn/a164 ft
Warranty covers owner installNoNo
Warranty, parts5 yr10 yrbest
Warranty, compressor10 yr10 yr
ENERGY STAR Cold ClimateYesYes
ENERGY STARYesYes
RefrigerantR-454BR-454B
Watch out forMOA 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.This 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.
MoreModel detailsOur full reviewView on Amazon →Model detailsOur full review