Stop Cold Air Under Doors & Around Windows Fast

If you feel cold air under a door or around a window your seal is failing. Replacing worn weatherstripping or adding a door sweep is one of the fastest and easiest ways to improve comfort and reduce energy loss.

This is one of the easiest home comfort upgrades you can do yourself.

Most homes lose air at doors and windows first.

Common Signs

• Cold air near doors or windows
• Light visible around door edges
• Rattling or loose seals
• Uneven temperatures near entry points

Quick Fix Options

• Door Sweep: Stops air coming in under the door
• Weatherstripping: Seals the sides and top of doors and windows
• Threshold Seal: Closes gaps at the bottom of exterior doors

Difficulty: Easy
Time: 10–30 minutes

Choose a product below based on where the air leak is coming from.