I did not see the original post. IF someone wanted to know about Alfa motorhome AC problems, then this is the true story. We sold them for 6 m,onths and after we could NOT keep them below 85 degrees in 95 to 100 degree Texas heat we dropped them.
The problem with the basement model Alfa motorhomes and cooling is simple (In higher than 90 degree days)
1. The unit AND return is in the rear bedroom area. Due to the floorplans and forward slide rooms, there is no way to get any hot air from the front back to the rear AC unit. We ran a 12 inch duct along the floor from rear to front and temp connected to the return plenum. THAT caused the AC to cool in the 75 degree range in the front on higher than 90 degree days. Because there was no simple way to install that duct thru the basement area, and Alfa did not come up with a design to do it, we dropped the line and Alfa purchsed them back from us.
2. The REASON we did these AC tests was because Alfa's were very popular back then and we had 2 potential customers that had read about the cooling problems on the Internet and stated if we could get the unit below 75 degrees on a 95-100 day they would purchase. We could not and they did not.
3. They were OK units but just not the type to use in 90 plus temps if you like it cold inside. Doug