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SpecSenville Leto 18,000 BTU 230VMrCool Olympus Hyper Heat 18,000 BTU (R-410A, Amazon listing)
PhotoSenville Leto 18,000 BTU 230VMrCool Olympus Hyper Heat 18,000 BTU (R-410A, Amazon listing)
Our scoreSCORE6.4 / 10SCORE7.4 / 10
Our takeMatches the Aura 12k at 5°F on paper, but upsizing a Leto for heat gets you a bigger unit that short-cycles and still stops at 5°F.A capable heat pump on paper but a superseded R-410A generation that cost more than a Senville Aura 18k when we checked. Buy it only with an installer who will commission R-410A.
Nominal size18,000 BTU18,000 BTU
Voltage230V230V
Rated heat at 47°F18,800 BTU/hn/a
Heat at 17°F14,000 BTU/hn/a
Heat at 5°F11,500 BTU/hn/a
Lowest heating temp5°F-22°Fbest
Install typeFlareFlare
Max line run98.4 ftn/a
Warranty covers owner installNoNo
Warranty, parts5 yr5 yr
Warranty, compressor5 yr7 yrbest
ENERGY STAR Cold ClimateNon/a
ENERGY STARNon/a
RefrigerantR-454BR-410A
Watch out forAmazon Leto listings don't state refrigerant; current R-454B pairings are SENL-xxCD-OL + SENL-xxCD-ILL, older R-410A ones end /OY + /IY. Senville's FAQ says no to owner installs, and the warranty requires a licensed HVAC contractor.Amazon lists model O-HH-18-HP-230E and no refrigerant; its "20 SEER" matches the 2022 R-410A O-HH-18-HP-C-230. The no-suffix model has no NEEP listing we could find. The legacy warranty applies only to installs by a state certified or licensed HVAC contractor. R-410A parts may be hard to find; one owner couldn't source a matching MrCool wall unit.
MoreModel detailsOur full reviewMaker / dealer page →Model detailsOur full reviewView on Amazon →