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SpecMrCool Olympus E Star 4th Gen 18,000 BTUSenville Elite 18,000 BTU 230V
PhotoMrCool Olympus E Star 4th Gen 18,000 BTUSenville Elite 18,000 BTU 230V
Our scoreSCORE7.4 / 10SCORE7.6 / 10
Our takeFull 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.The strongest Elite relative to its size: 22,600 Btu/h at 5°F and 11,900 max at -22°F.
Nominal size18,000 BTU18,000 BTU
Voltage230V230V
Rated heat at 47°F18,000 BTU/h20,000 BTU/h
Heat at 17°F18,000 BTU/h19,300 BTU/hbest
Heat at 5°F18,000 BTU/h22,600 BTU/hbest
Lowest heating temp-22°F-22°F
Max heat at lowest temp8,000 BTU/h11,900 BTU/hbest
SEER221.425.6best
HSPF2 (Region IV)1116.2best
Install typeFlareFlare
Line set in boxn/a16 ft
Max line run98.4 ft98.4 ft
Warranty covers owner installNoNo
Warranty, parts5 yr10 yrbest
Warranty, compressor7 yr10 yrbest
ENERGY STAR Cold ClimateYesYes
ENERGY STARYesYes
RefrigerantR-454BR-454B
Watch out for"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.Senville'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.
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