$50 QUESTION -- Category: Power House
Once walls have been insulated, unimproved doors and windows can still account for how much heat loss in winter?
- Every bit of it -- 100 percent. After all, the walls are insulated. Duh!
- Up to 50 percent.
- None. If you keep leaky old doors and windows closed, they don't cause any problems.
Congratulations! You got that one correct. Give yourself $50.00! Some heat will be lost through insulated walls, but air can seep through cracks around door and window frames, and heat can be transferred directly through a window's glass and frame through the process of conduction. Loosely fitting windows can lose up to five times more heat than tightly fitting ones!