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SpecSenville Elite 24,000 BTU 230VMrCool Olympus E Star 4th Gen 24,000 BTU
PhotoSenville Elite 24,000 BTU 230VMrCool Olympus E Star 4th Gen 24,000 BTU
Our scoreSCORE7.6 / 10SCORE7.4 / 10
Our takeMakes less at 5°F than the 18K (20,000 vs 22,600) and NEEP files it as centrally ducted; the least-documented Elite size.Big output in the cold (24,200 BTU/h at 5°F), but it doesn't turn down any lower than the 18k on a mild day, so size it from a load calculation.
Nominal size24,000 BTU24,000 BTU
Voltage230V230V
Rated heat at 47°F24,000 BTU/h29,000 BTU/h
Heat at 17°F17,100 BTU/h22,200 BTU/hbest
Heat at 5°F20,000 BTU/h24,200 BTU/hbest
Lowest heating temp-22°F-22°F
Max heat at lowest temp10,200 BTU/h11,900 BTU/hbest
SEER225best21
HSPF2 (Region IV)1113.5best
Install typeFlareFlare
Line set in box16 ftn/a
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. No published max line length for the 24K; Senville's page lists 24.0 SEER2 / 11.0 EER2 vs 25.0 / 14.0 on NEEP.MrCool's submittal and install manual disagree on max line length (164 ft vs 213 ft); work to the manual that ships with the unit. "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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