My living room a/c blows out warm air. I have tried the lowest setting, I've cleaned the filter and checked everything I could think to check. It's a fairly new looking wall unit with a remote control. Should I replace it or is there something I can do to repair it?

Is this a window unit?

Since you sent a email and you have not activated your email here this is the message I got. (Sorry, but this member has specified that they do not wish to receive emails.)

So I will answer you here.

A wall unit is just about the same as a window unit in design.

Due to the nature of the beast the internal part of the unit will have to be slipped out of the wall sleeve and serviced by a ON SITE professional.