Rooftop AC Unit Not Cooling Well
Hey everyone! I am new here and was hoping to get some guidance about an AC issue in my 26-foot travel trailer. I turned it on for the first time this year and noticed it wasn't cooling well. It was b...
Forum Discussion
opnspaces wrote:
Portables just flat out suck. If you sit right in front of the portable it might cool you down.
The downside of a portable is it has to exhaust the hot air to the outside that it creates when cooling. This causes a negative pressure inside so the new hot outside air gets pulled into the trailer to relieve the vacuum.
That is true of single-hose units, which I agree are just about useless because of the pressure differential you mention. If you get a dual hose unit, it both draws and exhausts air outside. No pressure differential with those.
