I watched a few You Tube videos and was a bit concerned about hooking up the exhaust, but when I actually got it and laid it out on the floor, my solution was simple. I just used a piece of fence tubing (the exhaust pipe fit perfectly) and laid it out under my garage door. I used some header wrap where it passes close to the door. No problem. 22 degrees last night and I am working comfortably in the garage (insulated) at 65 degrees. It took about 1.5 hrs to warm the garage up.