We have an Alfa fiver that has basement air, virtually the same unit in what you are looking at. We bought ours new 2003. We knew up front that the AC units could cause some problems in time. Well after full timing for 17 years in this fiver using both the AC and heat pump, the unit took the death blow last September (2020) Up to that time there were no problems but we knew it would. I also knew most RV outfits won't even look at them, that it was better to call a residential AC outfit to see if they would work on them. When tis unit crapped out, I knew the compressor locked up. So fortunately we were back in Yuma, AZ. and needed AC. Went to an RV parts and repair that I have dealt with for years. I walked in and "do you guys work on basement units"? "No we don't but another outfit just up the street does and I could be wrong but I don't know of anyone else in the area that does". So I go there and I have purchased some items from over the years from them. Talked to the guy that I knew would know what they could do if anything. "Are you mobile"? "Yes, no problem there". "Well we need to have it down here because the fiver needs to be jacked up, and units dropped". He also confirmed my diagnosis. "Now to be up front with you, I have two new compressors here but won't know if they will match up". "It will be a minimum of $1600 dollars". So knowing these units are still being put in some newly built units, " I asked, well what about new units"? Answer, " unfortunately Airecel(Coleman) has changed the configuration on the units and they can't be retro fitted". "Also the parts in the new units aren't compatible with the old units". He then offered" if you weren't mobile I'd tell you to call a residential AC outfit and have them install a residential 2 1/2 ton unit as they will be able to use your existing duct work". So I come back to our RV lot and tell the wife the situation. In about two hours we decided to retire our 40' unit from the road and do the residential unit deal. At that time there were no roof AC units anywhere do to plants shut down. Due to the length of the fiver I really didn't like that option anyway since the roof airs would have trouble cooling the whole unit in higher temps. This situation started on a Friday, we went and got a small window AC and stuffed it in the bedroom for the weekend as temps were hovering around 105. Monday morning I called a residential AC outfit that I had prior knowledge of doing this type of install for some folks in an RV park that we knew when we were in the park. He comes out, takes a look see. No problem as we do these frequently. "Ok, how much and when can you do it"? "Tomorrow morning 8 AM and $3900 dollars complete". They got here about 8:05, went to work, and it was starting to cool at 9:50 AM. Now to the next story.
As we aren't ready to get off the road yet, we spend about 6 months on the lot here in Yuma and then on the road for about 6 months, give or take. We decided to look for something used that was shorted for the summer. Looked in Oct, Nov, and Dec. I really didn't want a travel trailer and sure didn't like the newer fivers. Entirely too much fluff. So the first week of January, a 2005 Alfa , yes another Alfa, was listed in the Whitesheets. We thought it was a little high and sort of put it on the back burner. The fourth week it was still listed but the price dropped $2500. Ah, we better go look at it. Well the owner came down a little bit more. It was used very little because I know what ours looks like after life on road. So we bought it and decided if the basement AC's go belly up, being a shorter unit, 31' I'll just put on roof ACs. Lo and behold when as I was moving the solar from the fulltime unit to the newly purchased unit. I had the breaker box out of the cabinet and noticed a rolled up Romex cable laying there. Hmm! I went to the bedroom, removed the trim ring from the regular roof vent. Well, well, there wrapped up was an unused Romex. I ohmed it out and sure enough complete from the breaker box to the roof. As far as the second vent, it would be easy enough to wire from that location to the breaker box. We just were using the basement air at Lake Havasu City at 102 and it did really well, but hiccup could come anytime. In our travels we do see a few Alfas that have had roof ACs mounted. Don't know if the basement units crapped out or many folks didn't like the way they cooled the bedroom. We have a friend that has an Alfa motorhome, 2005, I believe, and he never has had a problem but he too is ready for the unexpected.