Owning an upright freezer gives you lots of space to store frozen foods for your family, but when it stops working correctly, you risk losing the items you have stored. Some of the symptoms your freezer is experiencing, such as frost build-up around the door, the door not sealing properly or the freezer constantly running are signs your door seal is deformed, damaged or worn. Replacing the door seal on your upright freezer can alleviate these symptoms and avoid the loss of frozen foods.
Remove the replacement seal from its packaging. Place it in a bathtub full of hot water to allow it to soak for about an hour. This softens the gasket and removes the bends and creases from the seal caused by the packaging.
Open your freezer door. Locate the power switch. Turn off the freezer at the switch. If you cannot locate a switch, unplug your upright freezer from the wall outlet.
Remove any food items stored in the door of the freezer. Place them in an insulated cooler.
Examine the current door seal to see how it attaches to your upright freezer door. Lift up the edge of the gasket to expose the screws holding the seal to the door. Depending on the design of the seal and the model of freezer, you may only need to loosen the screws rather than remove them from the seal and the door. If you see an apparent slot in the seal where it appears the seal slides under the screw heads you will only loosen the screws, if the seal is solid around the screw, you must remove all the screws to remove and replace the seal; this also should be apparent when you purchase your replacement gasket.
Loosen or remove the screws holding the seal to the freezer door. There are several screws, so use a cordless drill or electric screwdriver to loosen or remove them. If the design of your freezer door and seal requires removing the screws, be prepared to have the inner door panel disengage from the outer freezer door. Place removed screws in a bowl or plastic bag, so you do not lose them.
Pull the seal from the freezer door. As you pull the seal from the door, check for the placement of the seal magnets. Some freezer door seals have magnets in all four sides of the seal, while others exclude magnets from the hinge side of the seal.
Remove the replacement seal from the bathtub. Dry the seal thoroughly with a terrycloth towel. Remove all water from the seal folds. Any water left on the seal could freeze or promote the growth of mold.
Attach the inner door panel to the outer freezer door with a single screw on each side of the panel if the inner panel came off the outer door when you removed the seal screws. Do not tighten these screws, so you can slip the edge of the replacement between the inner panel and the outer door.
Orient the replacement seal, so that it lines up with the freezer door. Make sure the magnets in the seal are in the correct locations.
Insert the new seal between the inner and outer door panels, lining up the holes in the seal with the screw holes in the panel and door. If you did not have to remove the screws, slide the slots cut in the replacement seal around the screws.
Secure the new seal to the door with the screws. Work from the outside corners and alternate from the left side to the right side, so you work your way toward the center of the door as you tighten each screw.
Tighten the top screws first, and then tighten the bottom seal screws. Tighten the screws on each side of the freezer door, working from the each corner, alternating from top to bottom until you reach the center screw to ensure the seal will not pull from the upright freezer door. If your inner door panel disengaged from the outer door, remember to remove and replace the screw you used to hold the panel in place as you installed the new seal.
Replace the food items in your freezer door. Turn on or plug your upright freezer into the wall outlet.