[RKDinOKC]

Yep, insulated to.

I set the thermostat on the electic heater to keep the garage around 50°F so the liquids and waxes and stuff like that don't get too cold. Use one little electric heater, took 2 before I added the insulated door. 2 walls are outside brick walls and uninsulated, one is an interior house wall. Above the ceiling is not insulated as well.

My heater closet that has the HVAC and Watertank is in the garage with 2 inches under the door and is open to the attic. My attic vents pull enough air that it pulls the garage door away from the seals on the sides and top. May be I need to close up that gap under the HVAC doors some so it draws more air through the soffit vents and not the overhead door.

Even with the insulated door in the summer it gets to within 5 degrees of whatever it is outside.