🌡️ HVAC
Seal Air Leaks Around Windows and Doors
⏱️2 hrs💰$20–40🟢Beginner⭐4.9 (412 reviews)
Drafts can account for 25% of your heating bill. Caulk and weatherstripping are the cheapest fix in home ownership.
Find the leaks
On a windy day, hold a lit incense stick near window and door edges. Smoke movement reveals drafts.
Caulk stationary gaps
Apply a bead of exterior-grade silicone caulk around window frames, siding penetrations, and where trim meets walls.
Add weatherstripping to doors
Install foam or V-strip weatherstripping along the sides and top of door frames. Replace threshold sweeps on the bottom.
Insulate outlets on exterior walls
Pop covers off, tuck in foam gaskets ($4/pack), and replace covers.
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