I have a bit of an odd use model, it sits outside my van on a stand and I pipe the heat in through a window. It worked great out of the box, but use YouTube videos to learn how the controller works. Can't pair the remote to the controller. It worked great at 8,000 feet and need it for about 10,000. It kicks out heat nicely and doesn't use too much fuel. I wired it into a lighter-style power source that I plug in through the window, and had to splice in another two feet of wire to the controller. Now the controller and the power can be inside, the unit sits outside on a wheel step, and it heats the interior pretty well. Worth the money for sure.