Window AC not cooling properly
I have an older window AC unit which was left by the prior owner of my house. It's a Carrier unit, 8800 BTUs.
It's in a main floor living room, approx. 325 Sq. Ft. The room doesn't really seem to be getting cool on these hot days we've been having. Even with the thermostat turned to maximum cool, and the room being pretty warm, I hear the compressor cycling on and off. When it's on, the air coming out is icy cold but it only seems to be on about half the time.
Is this a thermostat issue? Is it something somewhat simple to fix maybe? The unit is sort of built into the window, and I hate breaking it out to put a new one in, if it's just something simple or easy to fix.