The weather was fairly warm today so I took the opportunity to investigate further into the “Whisper Quiet” problem. It turns out I have an Airxcel 4800 Mach 15 heat pump. It is fastened to the roof with 4 lag screws, just as Grumpy indicated in an earlier post. The head on the screws is a 5/16” hex. After removing the squirrel cage cover, I found more of the quality control that I have come to expect with this RV.
On the intake side of the A/C we are presented with a pile of sawdust, messy wires, and my favorite…. Magical-mystical-fix-everything-glimmer-tape! As you can see the fabulous tape has depreciated and no longer seals the void in the attic. The inside filters are rather pointless when the unit is sucking fiberglass insulation from the attic and blowing it all over the inside of the RV.
I did not take pictures of the exhaust side, but I did remove the blower motor and put my hand in the ducting. There are several gaps that go directly into the attic that once were hidden by glimmer-tape. I did not remove the entire unit because I do not have a spare roof gasket on hand. My plan is to replace all of the pathetic tape with expanding foam. I will update this post when I complete the repairs this spring.