Even if the garage is attached, there will be an exterior door between the garage and the house proper that will be as heat loss resistant as your front door. So I don’t know how you get anymore heat loss than you would from any exterior door in the house. In fact, that door will have LESS heat loss than your front door because it’s shielded from the elements that your front door isn’t.
Even if the garage is attached, there will be an exterior door between the garage and the house proper that will be as heat loss resistant as your front door. So I don’t know how you get anymore heat loss than you would from any exterior door in the house. In fact, that door will have LESS heat loss than your front door because it’s shielded from the elements that your front door isn’t.