Occupant Door
The occupant door is the door between your attached garage and your living space. The door from the garage should lead to a non-sleeping area of the house.
In addition to providing easy access to your garage, the occupant door should provide a barrier between your (usually) unheated garage and the rooms of your home. Poorly-installed, an occupant door can cause heated air to leak from your house, wasting energy and adding to your heating bill. In addition, since combustible gasoline is stored in most vehicle gas tanks, an occupant door should be part firewall, not just a decorative, wooden door.