Are there areas in your home that are too hot or too cold, no matter the thermostat setting? If the answer is yes, it could be conditioned air escaping through gaps in your home. Sealing those gaps is one of the cheapest and most effective ways to save your energy dollars and increase comfort.
Start by locating where air leaks are occurring. It could be any place where two materials meet, such as the foundation walls and the flooring or where there's an opening to the outdoors. Gaps can also occur around exterior doors and cracked caulking around window frames. Another area to check is in the attic — gaps around ceiling fans, recessed light fixtures and electrical outlets.
Once you've found the leaks, sealing them is a simple project you can do yourself with supplies available from your local retailer.
1. Windows: Seal windows with exterior caulk. Your best bet is silicone or siliconized caulk.
2. Doors: Fix gaps around exterior doors with weatherstripping and a door sweep.
3. Attic: Ceiling fans, recessed lighting fixtures and electrical outlets in the ceiling below your attic are potential sources of air leakage.