I use this in my garage, but it's very important to know you must port out the exhaust AND the intake tube. And try to separate the two as much as you can, porting out to the outside with the exhaust being at a higher level preferably. It would be smart to mount this on 2×4's, so the bottom tube does not get easily damaged. This works very well, and I am buying another one for my antique camper. It would be nice if VEVOR would have extra tubing of ALL the tubes connected to the heater AVAILABLE. And when purchasing on the website, have a place for shipping to request delivery to be brought upstairs instead of wherever the driver deems he wants to put it. I don't want it to be out in the open because I live on a Busy street. And other people might have a delivery box that can be locked after the delivery by the driver.