Keep rooms measuring up to 550 square feet cool with this Keystone window/wall air conditioner. The energy-saver feature helps conserve power, while the three cooling speeds and fan speeds provide versatility. This Keystone window/wall air conditioner has a built-in programmable timer for accommodating schedules, while the heavy-duty dehumidifier removes up to 2.6 liters of water from the air per hour.
Up to 550 sq. ft. cooling capacity
Allows you to keep a medium-sized room cool.
12,000 BTUs of cooling power
Help keep your space at a comfortable temperature.
Include cooling, heating and dehumidifying for flexible operation.
3 fan-only speeds
Help you ensure air circulation.
Offer simple setting selection and temperature adjustment.
4-way air direction control
Enables you to achieve optimal circulation.
ENERGY STAR certified
Eco-friendly design reduces energy usage.
KeyStone 550 Sq. Ft. 12,000 BTU Window Air Conditioner and 11,000 BTU Heater
A:AnswerWhile I cannot give you a 100% certified accurate answer, just know that for this price you can be pretty sure it is resistance heating.
All of the window units that I have seen in this price range use this method of heating.
Pricier units may have a heat pump.