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SpecSenville Elite 18,000 BTU 230VMrCool Olympus E Star 4th Gen 18,000 BTU
PhotoSenville Elite 18,000 BTU 230VMrCool Olympus E Star 4th Gen 18,000 BTU
Our scoreSCORE7.6 / 10SCORE7.4 / 10
Our takeThe strongest Elite relative to its size: 22,600 Btu/h at 5°F and 11,900 max at -22°F.Full rated output at 5°F, the size we'd take for a cold-climate room or garage if a MrCool contractor quotes it fairly. Plan backup heat for -22°F nights, where it tops out at 8,000 BTU/h.
Nominal size18,000 BTU18,000 BTU
Voltage230V230V
Rated heat at 47°F20,000 BTU/h18,000 BTU/h
Heat at 17°F19,300 BTU/hbest18,000 BTU/h
Heat at 5°F22,600 BTU/hbest18,000 BTU/h
Lowest heating temp-22°F-22°F
Max heat at lowest temp11,900 BTU/hbest8,000 BTU/h
SEER225.6best21.4
HSPF2 (Region IV)16.2best11
Install typeFlareFlare
Line set in box16 ftn/a
Max line run98.4 ft98.4 ft
Warranty covers owner installNoNo
Warranty, parts10 yrbest5 yr
Warranty, compressor10 yrbest7 yr
ENERGY STAR Cold ClimateYesYes
ENERGY STARYesYes
RefrigerantR-454BR-454B
Watch out forSenville's FAQ says no to owner installs; warranty registration asks for the installing company and invoice. Senville's site lists higher HSPF2 than the AHRI figures on NEEP; we use the certified numbers. The Amazon 18K listing model field reads SENE-12EL-16 while the part number is SENE-18EL-16."E Star" and the O-ES prefix also appear on an older R-410A Olympus (-230B condensers); confirm R-454B and an outdoor model ending -230C-O1. The Olympus listings on Amazon are the legacy R-410A Hyper Heat, not this unit. MrCool's FAQ says an HVAC professional must install it; the warranty's softer "may be necessary" wording doesn't change that.
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