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SpecMrCool DIY 5th Gen 12,000 BTU 115VSenville Aura 12,000 BTU 230V
PhotoMrCool DIY 5th Gen 12,000 BTU 115VSenville Aura 12,000 BTU 230V
Our scoreSCORE6.9 / 10SCORE7.5 / 10
Our takeOur default no-vacuum kit for a garage, shop or room on 115V, with a warranty that covers your own install and the line set. It makes 8,400 BTU/h at 5°F, less than cheaper flare units, and only 3,800 at -13°F.The 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.
Nominal size12,000 BTU12,000 BTU
Voltage115V230V
Rated heat at 47°F12,000 BTU/h12,000 BTU/h
Heat at 17°F8,500 BTU/h12,000 BTU/hbest
Heat at 5°F8,400 BTU/h11,500 BTU/hbest
Lowest heating temp-13°F-22°Fbest
Max heat at lowest temp3,800 BTU/h5,900 BTU/hbest
SEER223.525.4best
HSPF2 (Region IV)10.210.5best
Install typeQuick-connectFlare
Line set in box25 ftn/a
Max line run75 ft82 ftbest
Warranty covers owner installYesNo
Warranty, parts5 yr5 yr
Warranty, compressor7 yr10 yrbest
ENERGY STAR Cold ClimateYesYes
ENERGY STARYesYes
RefrigerantR-454BR-454B
Watch out forOne Amazon listing with this model number is sold as a "Condenser"; confirm the wall unit is in the box before you pay. MRCOOL 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.The 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.
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