Over time, dust and debris build up inside your window AC unit and cake onto components. This disrupts air flow and makes the compressor and blower work harder than they need to.

When to Install a Window Air Conditioner Window unit ACs work best within temperature and humidity ranges, generally from 62 to 64°F at the low end and 90 to 105°F at the high end.

It's hot. Like, really hot. Once you learn how to clean a window AC unit, you can stay cool all summer long.

Get answers to your questions about installing a window air conditioner in an apartment, from Consumer Reports.

Window air conditioners only fit specific windows: single- and double-hung windows. If your window is narrower than 22 inches wide, most window ACs won't work.

Beat the heat with your window AC. These tips can help improve its performance while also extending its lifespan.