Freezer frost isn't just unsightly. It can impact food quality, cause a nasty odor and even weaken your freezer's efficiency. But there are ways to combat it.
Why Your Freezer Is Frosting Up, and How To Stop It
Updated on Dec. 11, 2024
Frost buildup in your freezer can be more than just a minor inconvenience—it can lead to significant issues for both the appliance and the food stored inside. From reducing available storage space to causing freezer burn that spoils your meals, frost is a common problem that often goes unnoticed until it becomes severe.
But what exactly causes freezer frost, and how can you prevent it from forming in the first place? Understanding the root causes of frost buildup, such as improper sealing, frequent door openings, and even the placement of hot food in the freezer, can help you maintain your appliance’s efficiency and prolong its lifespan.
Fortunately, with the right knowledge and a few preventive measures, you can keep your freezer running smoothly and your food properly preserved.
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What Is Freezer Frost?
Accumulated frozen moisture on the interior walls and shelves of your appliance is commonly known as freezer frost. It occurs when “moisture comes into contact with the evaporator coils inside your freezer and then freezes,” according to General Electric.
What Causes Freezer Frost?
Moisture collects on evaporator coils a few ways. Leaving the freezer door open too long is probably the most common. A worn or damaged gasket (the door seal) will allow warm air in and cold air to escape, contributing to freezer frost.
Hot food placed in the freezer can also produce humidity, which causes frost buildup. Other sources include malfunctioning defrost timers, heaters and thermostats, according to GE.
The Negative Impacts of Freezer Frost
It’s important to take action if you notice frost buildup in your freezer. Here’s what happens if you don’t:
- Reduced freezer storage space
- A foul odor
- “Freezer burn” (those crystals that give your food an off-taste)
- Damage to the appliance
How to Remove Freezer Frost
To remove freezer frost, unplug your appliance and wait for the frost to melt, according to Summit Appliance. Then wipe up all the moisture, let everything dry and plug the appliance back in. Don’t scrape off the ice with a knife or any other sharp object. That can damage the appliance and the object you’re using.
How to Prevent Freezer Frost From Coming Back
- Don’t open your freezer door longer than necessary.
- Regularly check the gasket for damage.
- Double-check to be sure the freezer door closes completely.
- Only place cooled food in the freezer.
- Do not place the freezer near warm appliances like a furnace, dryer or water heater.
- Leave room between the back of the freezer and the wall.
- Be sure the freezer is set to an appropriate temperature.
