I live in a mobile home with central air. Lately, the a/c doesn't seem to keep it cool enough (below 76) when the temp outside gets in the mid 80s to 90.
Someone asked me if the filter was dirty. Well I guess I have none, unless it's underneath somewhere. Each room has at least one return duct with a 18" square one in the kitchen. Is that where the filter should be? below the register? since it has been operating without one, what needs to be cleaned now?
I know little about central a/c, but would like to do something simple if I can, before calling in a serviceman.
thanks for your help. enjoy the holiday!