While traveling to and from Florida over the 4th of July the temperature of our camper rose to 93 degrees. A little bit warm for our dog who resides there while we travel. I have a vent fan installed but all that does during the hot months down here in the “south” is pull hot air into the camper. To be able to use an air conditioner while under way it would have to be 12 volts – and I was unable to find one. I have seen the “Kooleraire” idea using a cooler and ice but it’s already humid enough in Georgia so I rejected that idea. Besides, I wouldn’t want to have to keep buying more ice (keeping the beer cold uses enough!).
I decided that I needed a way to get some air conditioned air from the truck to the camper. I was unable to use the “motorcycle inner tube” method because the top of my truck rear sliding window is only an inch or two from the top of the cab (there wouldn't be anything for the tube to seal against). I read of all the problems others have been having with the TC manufacturers “boots” not staying in place while driving. Whatever I came up with was going to have to be flexible because of the movement between the camper and truck cab. While having a drink I thought that a koozie would make a great “duct” (Flexible, relatively durable).
Here is the “solution” that I came up with: I cut two pieces of aluminum sheet metal to fit in the sliding windows of both the truck and the camper. Cut a couple of holes and attached 2 ½” dia. PVC electrical conduit (fits the inside of a koozie perfectly) -1 ¾” long as a flange for the koozie (sealed under the PVC with foam). The truck “plate” is positioned in the flange for the sliding window. It has a slight bow so it stays in place all by itself. I had to use a couple of “locks” for the camper “plate” (made out of long ear nut-plates). I used foam strips to help seal out the rain and air noise. I had originally thought of using the Turbomaxx to draw the air out of the truck but then it would just be sucking all the cold air right back out of the camper. I figured that I could wire up a 12 volt computer fan like folks have been using in their refrigerators. Come to find out I didn’t need to use anything at all. With the trucks fan on the second setting there is a LOT of airflow going into the camper. Evidently, there are enough vents and gaps in the camper for a good exit flow.
We just did a 2800 mile (Georgia – Maine – Georgia) test run and it worked great. One glitch – the truck “plate” kept popping out from behind the sliding window flange. After we arrived in Maine I cut a notch in a dowel and slid it in between the sliding window post and the truck “plate”. Also there was a little more air noise than with the sliding window – not much but a little. I was worried about the koozie staying in place but that was a non-issue. After the camp road – nothing short of a roll-over will make that fall off.
Here are some readings that I took while on the road:
Time…..OAT….Interior air temp……difference 8:50…….83………….74……………….-9 12:00…...94………….82……………….-12 (we must have had the air on MAX) 16:00…...90………….85……………….-5 15:30…...86………….78……………….-8 19:50…...87………….80……………….-7
Luv2skyski's Camper Page
Truck Plate Latch Revision
I was finally able to replace the wooden dowel "latch" with a real latch. Much simpler to use and now I can't drop the dowel down between the truck bed and camper!