air from AC escaping into the ceiling cavity
My camper has developed sort of a stale smell that was only occurring when I ran the air conditioner. I cleaned the coil and duct work and all parts that contribute to air coming into the cabin, yet...
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Okay, I pulled the AC unit down so I could get access to where the air enters the ductwork and caulked that whole area real good so that I know that no air is escaping into the ceiling cavity at that point. That did not solve it, so my next step is to get creative with duct tape and weather stripping to seal where each vent enters the ductwork. While the vents were out, I took a small mirror and flashlight and looked into the ductwork. I could not see where any tape was missing, but did see that several nails had penetrated the ductwork from the construction of the camper. I'm not sure if much air would be escaping there or not. Besides, I don't know if there is anything I can do about that without ripping out the ceiling. Anyhow, hopefully sealing the vents will take care of it. The question I still have is, was the AC system ever completely 100% sealed when it was built 7 years ago and is it possible to seal it completely?
