BLACKSTONE 280RLSB AIR COND. ISSUE

Pull the A/C intake grille and check that the inside is sealed up around all edges. Quite a few rv's have had the seams around that intake box with gaps into the return casing. Makes the cold air go round and round, less air going to the duct work. If such is found, should help some!!! Our Timber Ridge had gaps on three sides and air flow and cooling was much improved when sealed up with aluminum duct tape.

Also, you have a lot of black on that model trailer, which doesn't help with reflecting heat!!! Really don't understand the trend to dark colors in rv's nowadays!!