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SpecMrCool Olympus E Star 4th Gen 9,000 BTUSenville Aura 9,000 BTU 230V
PhotoMrCool Olympus E Star 4th Gen 9,000 BTUSenville Aura 9,000 BTU 230V
Our scoreSCORE7.4 / 10SCORE7.5 / 10
Our takeA 9k that heats like a 12k: 11,500 BTU/h at 5°F and 27.4 SEER2. Contractor install only, sold through HVAC retailers.Same heat as the Aura 12k on NEEP at every temperature, with 27.4 SEER2. Pro install only, and we don't have a verified listing for this size.
Nominal size9,000 BTU9,000 BTU
Voltage230V230V
Rated heat at 47°F12,000 BTU/h12,000 BTU/h
Heat at 17°F12,000 BTU/h12,000 BTU/h
Heat at 5°F11,500 BTU/h11,500 BTU/h
Lowest heating temp-22°F-22°F
Max heat at lowest temp5,100 BTU/h5,100 BTU/h
SEER227.427.4
HSPF2 (Region IV)12.512.5
Install typeFlareFlare
Max line run82 ft82 ft
Warranty covers owner installNoNo
Warranty, parts5 yr5 yr
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.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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