Today I’m working on adding air conditioning to our Tusca HitchHiker camper, and the big focus in this video is getting the ducting ports installed in the camper shell. If you’re not familiar with Tusca, they’ve been building hunting blinds longer than they’ve been building the HitchHiker units, and those blinds have been tested a lot in fall and winter conditions—so heating is the easy part. But since we’re planning to use this setup year-round, I needed a way to bring in cold air too. I’m using a BGE RV portable AC unit, but I’m not reviewing it yet because I haven’t tested it enough to say how it performs in this application. What I did tackle here was drilling the intake and cold-air duct holes and installing exterior ports. I used a 4.5-inch hole saw (with a pilot hole from the inside out to nail the placement), and I’ll be honest—cutting through the hot-applied membrane was tougher than I expected. In the end, I mounted UV-resistant ABS thermoplastic ports on the side (instead of the leading edge to avoid harsher exposure) and sealed everything up with a generous amount of Lexel silicone. Next up will be real-world testing, then we’ll get back to camping and off-roading content.