The room temp is currently 84 and the register temp is only slightly cooler. The house hasn't cooled past 84 for the last few hours.
That sounds right. I'm going to clean the outside coils tonight, but is there a way to clean the inside coils without removing them? I can open the duct slightly to get a hand in there, but there isn't much room. I wouldn't think the inside coils would be bad after only 5 years in a new home.
That makes me feel better. I'll clean the outside coils tonight and if that doesn't help, I'll call a tech for a refrigerant service.