To clean a window air conditioner, slide the unit out of its case, move it outside to work, and straighten any bent fins. Vacuum the coils, spray with air conditioner cleaner, and rinse with a hose. Once the unit is clea... More »

The four main parts of an air conditioner are the evaporator, condenser, expansion valve and compressor. A refrigerant, fans to blow cold and hot air, filters and a thermostat are also needed to ensure your air condition... More » Home & Garden Heating & Cooling

Checking the air conditioner's power supply, fan, thermostat and filters are the usual steps for diagnosing a problem with the unit. Subsequently, you should check for blockage around the condenser, evaporator and drain ... More » Home & Garden Heating & Cooling

At least once a year a window air conditioner must receive routine maintenance, or else the unit's performance and efficiency may degrade while the risk of breaking down increases. A window air conditioner must be remove... More »

An open vent on a window air conditioner allows fresh air from outside to come into the home and circulate along with the cool air produced by the unit. A closed vent prevents warm, fresh air from entering the home. More »

Window measurements should be taken before buying the air conditioner, and when installing the air conditioner, it might be necessary to remove the window so the unit can fit. After the unit is in place, all air leaks sh... More »

Some portions of windows air conditioner units are simple to repair, but the compact design of window air conditioners might require users to disassemble almost all of a unit to reach certain components, explains HowStuf... More »