Will getting a larger roof A/C solve the problem?
I have a 1993 Winnebago Brave 27RC and it has a coleman roof A/C. The BTU's are about 12,500. If I install a 15,000 Coleman roof A/C will it stay cool better in the hot Florida summer afternoon?
Forum Discussion
Finding some shade to park under can be a Godsend in the summer Sun.
Make sure your current AC is working as it's designed to.
As others have shared, to get the heat out of the condenser coil is essential to the interior cooling. Just as important is a roof surface that reflects the Suns heat. Black is very bad, grey is bad and white is best for reflecting the Suns heat. Any heat load you can reduce is equal to adding AC capacity.
Another problem is unit short cycling because of cold air on the outlet inside the ac bypassing the outlet and getting in the return side, causing the thermostat to turn off the compressor, even though the interior is hot. The cover has walls inside it that have a seal on their edge to prevent this from happening, it's just a foam weather strip that rots over time and no longer seals.
All of this contributes to what you describe.
Make sure your current AC is working as it's designed to.
As others have shared, to get the heat out of the condenser coil is essential to the interior cooling. Just as important is a roof surface that reflects the Suns heat. Black is very bad, grey is bad and white is best for reflecting the Suns heat. Any heat load you can reduce is equal to adding AC capacity.
Another problem is unit short cycling because of cold air on the outlet inside the ac bypassing the outlet and getting in the return side, causing the thermostat to turn off the compressor, even though the interior is hot. The cover has walls inside it that have a seal on their edge to prevent this from happening, it's just a foam weather strip that rots over time and no longer seals.
All of this contributes to what you describe.
