Thor Forums

[Long & Winding road]

I found some small leaks where the AC would turn into the inner roof vents. I taped them off and smoothed out the air flow.

We talked about this some last year. What we discovered was the AC ducts where just channels cut into the roof foam insulation. One member told us to block the ends of the runs (last vent in the front and the last vent in the back of each channel) then cut the foam at 45 deg angle to make the air flow quicker out the last vents. And finally to block the remaining channel off (That when into a dead end) with something as well.

We also cut the last vent cover its self in each channel (it has a black colar around it that would block our modified vent channel). This smoothed out the air flow.

On my axis the channels were open to the bulk head in front of the drop down bunk. So this cool air was doing nothing to cool in inside cabin air and was wasted. I stuffed insulation inside the bulk head to help keep heat (and cold) out.

By blocking all of these leaks and modifying the covers I greatly increased the air flow in the entire system.

I did one at a time then tested with the AC running....you can tell the diffrence right away and it speeds up the cooling of the RV greatly. One of my favorite "Free mods" (well if you have the tape and leftover insulation its free).

Plus I pulled out a coupe of chucks of loose foam blocking the vents.