Grease buildup happens because air fryers trap moisture and oil in a small space

Air fryers work by circulating hot air at high speed, which cooks food quickly but also splatters grease onto the heating element, basket, and walls. Unlike a traditional oven where grease can drip away, an air fryer's enclosed design traps that oil. Over time it hardens into a sticky, brown coating that can smoke, smell, and reduce how well your air fryer heats.

The good news: you do not need special chemicals or tools. Most buildup comes off with hot water, dish soap, and a soft brush or sponge. Cleaning after every few uses prevents the heavy, baked-on layers that take real effort to remove.

Key Takeaways

  • Unplug the air fryer and let it cool completely before you touch any interior surfaces.
  • The basket and tray come out and wash like regular dishes, but soak them in hot soapy water for 10 to 15 minutes first if grease is thick.
  • The heating element and interior walls need a soft brush or non-scratch sponge—never use steel wool or abrasive scrubbers, which damage the nonstick coating.
  • Wipe the interior dry after cleaning to prevent water spots and corrosion on the heating element.

Remove and soak the basket and tray

Most air fryer baskets and trays pull straight out. Check your manual if you are unsure, but usually you just lift them up and away from the heating element. Once they are out, fill your sink or a large bowl with hot water and add a squirt of dish soap.

Drop the basket and tray into the water and let them soak for 10 to 15 minutes. This softens the grease so it washes away instead of requiring scrubbing. If the buildup is very thick or baked on, soak for 20 to 30 minutes. After soaking, use a soft sponge or non-scratch brush to wipe away the grease, then rinse under running water and set aside to dry.

Clean the heating element and interior walls

Do not submerge the heating element or the main body of the air fryer. Instead, dampen a soft sponge or cloth with hot soapy water and wipe the interior surfaces where you see grease. Pay attention to the heating coil at the top—grease here burns and creates smoke.

For stubborn spots, use a soft-bristled brush (a soft toothbrush works well) to gently loosen the buildup. Never use steel wool, scouring pads, or abrasive cleaners, which scratch the nonstick coating and expose the metal underneath. If grease is very thick, dampen the cloth and let it sit against the spot for a minute or two to soften it before wiping.

Dry everything thoroughly before reassembling

Water left inside an air fryer can cause rust on the heating element and electrical components. After wiping the interior, use a dry cloth or paper towel to wipe away any remaining moisture. Pay special attention to corners and crevices where water pools.

Make sure the basket and tray are completely dry before you put them back in. If they are still wet, set them on a towel for a few minutes. Once everything is dry, slide the basket and tray back into place, plug in the air fryer, and run it empty at 350°F for 3 to 5 minutes to dry out any remaining moisture inside.

Prevent heavy buildup by cleaning more often

The easiest way to avoid thick, baked-on grease is to wipe out the basket and interior after every 3 to 5 uses. A quick wipe with a damp cloth takes 30 seconds and stops grease from hardening. If you cook fatty foods like bacon, sausage, or chicken wings regularly, clean after every use.

You can also line the bottom of the basket with parchment paper or an air fryer liner, which catches dripping grease and keeps it off the surfaces. Just make sure the liner does not block the air vents—grease needs somewhere to drain, or it will pool and burn.

What to do if grease is extremely thick or won't come off

If grease has baked on so hard that water and a brush do not budge it, try soaking the basket and tray overnight in hot soapy water. For the interior, dampen a cloth with white vinegar and let it sit on the spot for 5 to 10 minutes, then wipe gently. Vinegar cuts through grease without damaging the nonstick surface.

Do not use oven cleaner, bleach, or harsh chemicals inside an air fryer—they can leave residue that contaminates food and damage electrical components. If buildup is so severe that vinegar and soaking do not work, the nonstick coating may be permanently damaged, and you may need to replace the basket or tray. Check your air fryer's manual or the manufacturer's website to order replacement parts.

Frequently Asked Questions

Can I put the basket and tray in the dishwasher?

Check your manual first—some manufacturers say the basket is dishwasher-safe, but many recommend hand washing to protect the nonstick coating. If you do use the dishwasher, use the gentle cycle and avoid high heat. Hand washing with hot soapy water is gentler and usually faster for light grease.

Is it safe to use cooking spray in an air fryer?

Cooking spray can build up faster than oil from food because it is concentrated. If you use it, spray lightly and clean more often. Some air fryer manufacturers warn against aerosol sprays because they can damage the nonstick coating—check your manual. Brushing a small amount of oil directly onto food works just as well.

What if water gets inside the heating element?

A little water is not dangerous, but it can cause rust over time. Always let the air fryer cool completely before cleaning, and wipe the interior dry with a cloth afterward. If water does get inside, run the air fryer empty at 350°F for 5 to 10 minutes to evaporate it. If you see rust spots on the element, contact the manufacturer about replacement parts.

How often should I deep clean my air fryer?

A full soak and scrub of the basket and tray once a month keeps buildup from getting heavy. If you cook fatty foods several times a week, do it every two weeks. The interior walls need a wipe-down every 3 to 5 uses, but a full deep clean of the heating element is usually only necessary when you see visible grease or smell burning.