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Research by German meal kit provider HelloFresh shows 47% of users do not clean their air fryers properly after each use, according to technology news website Tom’s Guide.

The most common mistake, it says, is washing only the basket while ignoring the heating element, the appliance’s main heat source.

A breeding ground for bacteria and mold

High temperatures do not eliminate all harmful bacteria, according to Mimi Morley, an expert at HelloFresh.

“The likes of Salmonella, E. coli might actually be able to grow and can be a hazard to your health. That’s why cleaning your air fryer after every use is recommended,” she said.

Bacteria can grow in grease-filled crevices that do not reach sterilizing temperatures and spread to new food when the appliance is turned off.

Oil and food crumbs can be blown upward by the high-speed fan inside the fryer and stick to the heating element. If left uncleaned, the enclosed and humid environment after cooking creates favorable conditions for mold to grow. Inhaling mold spores may cause allergies, skin irritation and respiratory problems, particularly in people with asthma.

Fire risks and reduced food quality

Grease and food residue that build up over time can carbonize under repeated high heat. They produce burnt smoke that affects food flavor and increase the risk of fire.

Thicker residue can block hot air circulation, causing the appliance to take longer and consume more electricity to cook food, while reducing its crisp texture.

Tips for cleaning the heating element safely

To clean the heating element without causing electrical short circuits or damage, experts recommend the following steps:

Unplug and let the fryer cool: Make sure the appliance is completely disconnected from power and the heating element is no longer hot. Turn the air fryer upside down can give better access to the heating element.

Remove residue: Use a soft-bristled toothbrush to brush away burnt food particles. Avoid using steel wool, which can damage the protective coating.

Use natural cleaners: Wipe the surface with a soft cloth dipped in a mixture of baking soda and hot water or lemon juice to remove grease. Avoid spraying strong cleaning solutions directly onto areas with electronic components.

Dry thoroughly: Wipe the entire area again with a damp cloth. Ensure all parts are completely dry before using the appliance again to prevent electrical short circuits.

The heating element should be cleaned at least once a month or immediately after cooking greasy dishes.