All ActivityMost RecentMost LikesSolutionsRe: Rooftop AC Unit Not Cooling Well 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.
GroupsTravel Trailer Group Prefer to camp in a travel trailer? You're not alone.May 13, 202544,031 Posts
