I have had mine in the garage for about 8 years now, with no problems. Now my garage is my woodworking, reloading shop, you could not get a car in there if you tried. Before I got the safe I had to get a new overhead door, so I got an insulated double sided steel door, no windows. When the safe was installed, the dealer wanted to bolt it to the floor, so I let him. It is fit tightly into a back corner, one wall is a closet adjoining the living area, the other is an outside, brick wall for the front entrance. Prior to installing I put down a pad of vinyl tiles as a moisture barrier between it and the concrete floor. I then got a piece of an overhead curtain track, basically an aluminut I beam with little loop rollers you hang a curatin from, an bent it to go completely around the exposed side and front, so If I open the garage door it does not show as a safe. Since this is my workshop, and I had a good insulated door, I had a 10" duct run off the central heat/air so it is climate controlled now. I had to replace the old heat pump at that time and went from a 3 to a 4 ton high efficency unit and actually noticed a good decerase in electric that summer, and had a cool workspace of about 400 sq feet added. I rarely open the overhead door, leaving it locked most of the time and have since added a free standing two car carport, so neighbors know I have a workshop, but not the gun related equipment and safe.