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SpecSenville Aura 12,000 BTU 230VDella Serena 12,000 BTU 115V
PhotoSenville Aura 12,000 BTU 230VDella Serena 12,000 BTU 115V
Our scoreSCORE7.5 / 10SCORE7.3 / 10
Our takeThe 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.The most 5°F heat of the 115V 12k units we cover, 9,200 BTU/h, with ENERGY STAR Cold Climate status. You still need a vacuum pump or a tech for the startup.
Nominal size12,000 BTU12,000 BTU
Voltage230V115V
Rated heat at 47°F12,000 BTU/h12,300 BTU/h
Heat at 17°F12,000 BTU/hbest9,500 BTU/h
Heat at 5°F11,500 BTU/hbest9,200 BTU/h
Lowest heating temp-22°Fbest5°F
Max heat at lowest temp5,900 BTU/hn/a
SEER225.4best22
HSPF2 (Region IV)10.5best9.5
Install typeFlareFlare
Line set in boxn/a16.4 ft
Max line run82 ftbest65.6 ft
Warranty covers owner installNoConditional
Warranty, parts5 yrn/a
Warranty, compressor10 yrn/a
ENERGY STAR Cold ClimateYesYes
ENERGY STARYesYes
RefrigerantR-454BR-32
Watch out forThe 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.The listing says "Pre-Charged", but Della's FAQ says the lines are not pre-vacuumed; it is a flare-and-vacuum install. Della's printed manual says the extended warranty is for professional installation; the current web policy gives registered DIY installs replacement parts at Della's discretion. Screenshot it the day you buy. Della also sells Vario, Optima Pro, Hyper Heat and older R410A lines; most owner reports are about those.
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