Fridge doors that don’t seal properly can waste energy, raise your utility bill, and compromise food safety. A worn or damaged gasket is a common culprit, but you can diagnose and fix the problem with a few simple steps. This guide walks you through testing the gasket, cleaning and adjusting it, and replacing it if necessary.

First, test whether the door actually seals. Close the door on a piece of paper or a dollar bill so that it half-remains inside and half-out. If you can pull it out easily with the door closed, the gasket may be failing. Repeat at multiple corners to check for consistent leakage. For a more thorough check, tape a flashlight to the inside of the fridge and look for gaps along the door edge when the door is closed. Any visible light or damp spots indicate a leak.

Next, inspect the gasket itself. Look for cracks, tears, or deformations, especially at the corners. If the gasket is sticky or has dried residue, clean it with warm, soapy water. Rinse and dry thoroughly, then recheck the seal. If cleaning doesn’t restore a snug fit, you may need to adjust the door alignment or replace the gasket.

Adjusting the door alignment is often enough to improve sealing. Many fridges have screws along the hinges that can be loosened slightly to shift the door. After making a small adjustment, close the door with gentle pressure and re-test with the paper/dollar test. If the seal still leaks, consider applying a gasket adhesive or weather-stripping lubricant recommended by the manufacturer.

Replacing the gasket is straightforward but varies by model. Start by removing the old gasket: gently pull it away from the door channel along the entire length. Clean the groove with a mild detergent to remove old adhesive. Align the new gasket with the door and press it into the groove, working from the center toward the corners. Wipe away excess adhesive and let it set as instructed by the gasket’s packaging. Re-test the seal after installation to confirm a tight fit.

If you’re unsure about your model, consult the user manual or contact the manufacturer’s support line. A correctly sealed fridge helps maintain safe temperatures and reduces energy use. If the door still doesn’t seal after replacement, there could be an issue with the door itself or the frame, and a professional appliance technician may be needed.