I turned my garage into a man cave. Put carpet in the whole nine yards. I put a 14,000 btu portable air conditioner in and ran the exhaust through a hole in the side wall. I've had the unit for 3 days. During the day the temps outside have been 90-98 degrees. And the unit has kept my garage around 70-73. But at night when outside temps drop to 65-75, the brand new a/c unit will stop cooling down the room at 68. And it starts to smell musty or really humid like. It is still blowing cold air, but I like it really cold. My central a/c unit for the house has no problem keeping my whole house at 65 all day. Why isn't my garage A/C working?? The humidity levels have been about 60% and not fluctuated much. Why won't it cool past 68, when outside temps are about the same? It is a single car garage. It is set at 65 and I can hear the compressor running, and ir temp gun shows its pushing out 49 degrees.

I am trying to install a 5000 BTU window A/C in two room windows as shown here. Is the A/C rests on stool or the still? Also can the stool/Sill support 45 Lbs weight of the unit? or do i i need a L clamp on the siding outside? I don't want to use the deck for support, as it is junk and will be disassembled soon. Thanks [ATTACH]67370[/ATTACH] [ATTACH]67371[/ATTACH]