The Koldfront 12,000 BTU Through the Wall Heat/Cool Air Conditioner (WTC12001W) can service a space up to 550 square feet with cool air during the warm summer months and heat during the winter. Its through the wall design is safe and secure and helps eliminate the issue of outdoor air seeping indoors as is sometimes the case with a window unit. The air conditioner has 12,000 BTUs of cooling power and 10,600 BTUs of electric heating power. Using the electronic thermostat and digital display, you can set your desired temperature as well as control other convenient features like the energy saver mode, fan speed and 24 hour timer. For a secure fit that keeps outside air and pests at bay, this unit works in tandem with a durable through the wall sleeve (not included). Operate the temperature setting and fan speed from anywhere in the room with the convenient remote control. To save energy sleep mode will adjust the temperature periodically before returning to the set temperature after 6 hours. This function cycles the fan on for two minutes at 10 minute intervals and will turn the compressor back on if the the room temperature exceeds the set temperature. NOTE: Sleeve sold separately, compatible with the Koldfront wall air conditioner sleeve (WTCSLV). Dimensions: 14.5″ H x 24.2″ W x 20.3″ D; Input voltage: 208/230 V/60 Hz; Weight: 78.3 lbs.