1 Keystone air conditioner ranked. Each one is scored and ranked against every brand in its type, so "#3 mid-size" means third of all mid-size air conditioners here, not third among Keystone's own.
The Keystone 10,000 BTU Inverter Window AC is Keystone's only current air conditioner here, ranked #13 of 21 window and rated 3.5.
An efficient, compact inverter unit for a living room or large bedroom up to 450 sq ft. Good if you want quiet and low running costs without paying for smart features.
Amazon $429.99Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
An efficient, compact inverter unit for a living room or large bedroom up to 450 sq ft. Good if you want quiet and low running costs without paying for smart features.
Amazon $429.99