Frost Build-up in Manual Defrost Freezers

Manual defrost freezers are designed differently than frost-free models, and some ice build-up is normal over time. Because these units do not automatically remove moisture, frost will naturally accumulate inside the freezer.

However, excessive or uneven frost build-up may indicate that warm air is entering the freezer.

When Frost Build-Up Is Normal

• Light frost on walls or baskets

• Gradual ice accumulation over months of use

• Frost increases as the freezer is opened frequently

In general, manual defrost freezers should be defrosted once per year, or sooner if ice build-up exceeds a few inches.

If Frost Is Building Up Quickly

If frost returns rapidly after defrosting, or is concentrated in one area, warm air may be leaking into the freezer. The most common causes are related to the lid seal (gasket) or hinge alignment.

Step 1: Inspect the Lid Gasket

The gasket is the rubber seal that lines the lid and keeps cold air in.

Check the following:

• Is the gasket fully seated in the lid’s track?

• Are there any gaps, holes, or tears?

• Is the gasket hanging loose in any area?

• Does it appear flattened, warped, or compressed?

Fixing a flattened gasket:
If the gasket looks compressed, you can gently warm it using a hair dryer on a low setting. This helps the gasket regain its shape and improve the seal.

Step 2: Check and Adjust the Hinges

Loose or misaligned hinges can prevent the lid from closing tightly.

• Locate the hinges along the back of the freezer

• Slightly loosen the hinge screws

• Adjust the lid so it sits evenly and firmly on both sides

• Retighten the screws once aligned

This simple adjustment often resolves air-leak issues.

Helpful Video Guide

A short video demonstrating gasket checks and hinge adjustments can be found here:
https://www.youtube.com/watch?v=wPKUlrlrnD8&list=PLnT3qxaNOg-27Rxza8dGaYjvb1WM_0G03