Test refrigerator door seals when the fridge runs constantly, frost builds up, temperatures drift, or the gasket looks cracked, dirty, or loose. A weak seal lets warm air in and can make the refrigerator work harder.
Signs the door seal may be failing
- The refrigerator runs more than usual.
- Food near the door feels warmer.
- Frost or condensation appears around the door.
- The gasket is cracked, torn, sticky, or loose.
- The door doesn't close cleanly.
- You can see gaps when the door is shut.
The paper test
Close the refrigerator door on a piece of paper or a thin bill. Pull it out slowly. You should feel resistance. Repeat around several parts of the door. If the paper slides out with almost no resistance in one area, the gasket may not be sealing well there. ENERGY STAR also advises making sure refrigerator door seals are airtight and replacing them if they aren't.
This is a screening test, not a perfect diagnosis. Door alignment, packed shelves, dirty gasket folds, and hinge issues can also cause poor closure.
Clean the gasket first
Before replacing anything, clean the gasket. Food residue and grit can keep it from sealing. Use warm water and mild dish soap. Wipe inside the folds gently, then dry the gasket.
Don't use harsh cleaners that can damage rubber unless the manual specifically allows them.
Check the door swing and shelves
Sometimes the seal is fine but the door is blocked. Check containers, bins, drawers, and shelves that keep the door from closing fully. Make sure the refrigerator is level enough for the door to close as designed.
When to replace the gasket
Replace the gasket if it is torn, hardened, warped, or no longer seals after cleaning and alignment checks. Use the correct part for the model. A gasket that almost fits is still a bad gasket.
What this won't fix
A door seal won't fix a failing compressor, bad fan, thermostat issue, dirty coils, or refrigerant problem. If temperatures are unsafe, move perishable food and treat the issue as repair, not routine maintenance.
Good maintenance rhythm
- As needed: wipe sticky spills from the gasket before they dry.
- Monthly: look for crumbs, residue, or torn spots if the fridge gets heavy use.
- Every 6 to 12 months: do the paper test around the door.
- Any time temperatures drift: check the seal, door alignment, blocked shelves, and coil cleanliness.
- Replace the gasket: when it is torn, hardened, warped, or still leaks after cleaning and alignment checks.