1.
Inadequate insulation
2.
Vapor barrier facing the cold direction
3.
Water lines not insulated
4.
Missing band-joist insulation
5.
Window and door opening not properly sealed
6.
Duct work not insulated or joints not sealed
7.
Water heater not insulated; temperature above 125 degrees F
8.
No storm windows
9.
Inadequate crawl space ventilation
10.
Exposed lines not insulated
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