Start with the basket and tray — the parts that need it most

The basket and crisper tray collect grease and food particles faster than any other part of your Ninja air fryer. Remove both after the unit cools completely, then soak them in hot soapy water for 10 to 15 minutes. This loosens stuck-on residue so you do not have to scrub as hard.

After soaking, use a soft sponge or non-abrasive brush to wipe down all surfaces. Pay attention to the mesh bottom of the basket — grease pools there and blocks airflow. Rinse both pieces under running water until the water runs clear, then dry them completely with a clean cloth before putting them back.

Do not put the basket or tray in the dishwasher unless your specific Ninja model says it is safe. Most Ninja baskets have a non-stick coating that dishwasher heat can damage. Hand washing takes five minutes and keeps the coating intact for years.

Key Takeaways

  • Soak the basket and tray in hot soapy water for 10 to 15 minutes, then scrub with a soft sponge to remove grease without damaging the non-stick surface.
  • Wipe the heating element and interior walls with a damp cloth while the unit is unplugged and completely cool, being careful not to let water drip onto electrical parts.
  • Clean the exterior vent and any visible dust from the heating coils using a dry cloth or soft brush to keep airflow unrestricted.
  • Deep clean your Ninja air fryer once a month if you use it several times a week, or every two to three months for lighter use.
  • Never use metal utensils, scouring pads, or abrasive cleaners on any part of the air fryer, as these damage the non-stick coating and can scratch electrical components.

Clean the interior walls and heating element safely

The interior of the cooking chamber collects grease splatter and burnt-on food. Unplug the air fryer and let it cool for at least 30 minutes. Once cool, dampen a soft cloth or non-abrasive sponge with warm water and wipe down all interior walls, the roof, and the sides of the chamber.

For stubborn spots, add a small amount of dish soap to the damp cloth. Wipe gently — do not scrub hard or use any abrasive material. The heating element sits at the top of the chamber; wipe around it carefully without pressing directly on it. If you see grease buildup on the element itself, use a dry cloth to gently wipe it away.

Never spray water directly into the chamber or let water drip onto the heating element or electrical connections. Water in the wrong place can damage the unit or create a safety hazard. If water does drip inside, leave the unit unplugged and open for several hours to dry completely before using it again.

Address the exterior vent and heating coils

The vent on the back or side of your Ninja air fryer can become clogged with dust and grease vapour. This restricts airflow and makes the unit work harder. Unplug the air fryer and use a dry cloth or soft-bristled brush to wipe away any visible dust or debris from the vent opening.

If you can see the heating coils through the vent or interior, use a dry brush or cloth to gently remove dust. Do not use water on the coils or vent — they contain electrical components. A dry cloth is all you need. If dust is packed in tightly, a can of compressed air held at a distance can help dislodge it, but do this outdoors or over a sink to catch the debris.

Keeping the vent clear improves cooking performance and helps the unit last longer. Check it every month and clean it whenever you see visible dust buildup.

Remove grease from hard-to-reach corners

Grease can pool in the corners where the basket sits and along the seams of the cooking chamber. These spots are straightforward to miss during routine cleaning. After you have wiped the main surfaces, use a damp cloth folded into a point to reach into corners and along seams.

For very stubborn grease, dampen the cloth with warm water and a tiny drop of dish soap. Wipe slowly and carefully. If grease is really baked on, let the damp cloth sit against the spot for a minute or two to soften it, then wipe again. Never use a toothpick, wire, or any sharp object to scrape — you can scratch the interior coating or damage the unit.

How often to deep clean and what to avoid

If you use your Ninja air fryer several times a week, deep clean it once a month. If you use it once or twice a week, every two to three months is enough. Between deep cleans, wipe out the basket and tray after each use while they are still warm — this prevents grease from hardening and makes the next deep clean easier.

Never use metal utensils, steel wool, scouring pads, or harsh chemical cleaners on any part of the air fryer. These damage the non-stick coating and can scratch or corrode the heating element and interior surfaces. Stick to soft cloths, non-abrasive sponges, warm water, and mild dish soap. These are all you need.

Do not submerge the main unit in water or run it under the tap. The base contains the heating element and electrical components. Wipe the exterior with a damp cloth only, and always unplug the unit before cleaning any part of it.

Troubleshooting common cleaning problems

If your air fryer smokes or smells during cooking after cleaning, grease or cleaning residue may still be inside. Unplug the unit, let it cool, and wipe the interior again with a dry cloth. Run the air fryer empty at 350°F for five minutes with the door or basket open to dry out any remaining moisture. Let it cool and check again before cooking food.

If the non-stick coating is peeling or flaking, stop using the basket or tray when ready — flakes can end up in your food. Most Ninja models sell replacement baskets and trays separately. Ordering a replacement is cheaper than replacing the whole unit and ensures your air fryer stays safe to use.

If grease buildup returns very quickly even with regular cleaning, you may be cooking foods that are too fatty or not patting meat dry before cooking. Pat proteins dry with paper towels before placing them in the basket — this reduces splatter and grease buildup significantly.

Frequently Asked Questions

Can I use vinegar or baking soda to clean my Ninja air fryer?

Vinegar and baking soda are safe for the basket and tray — soak the basket in a mix of equal parts vinegar and water for 15 minutes, then scrub and rinse. For the interior, a damp cloth with a tiny bit of baking soda paste works on stubborn spots. Avoid vinegar or baking soda on the heating element or electrical parts; stick to water and mild soap there.

What should I do if food is stuck to the basket and won't come off?

Soak the basket in hot soapy water for 20 to 30 minutes instead of the usual 10 to 15. The longer soak softens stuck-on food. If it still will not budge, use a soft silicone scraper or the soft side of a sponge — never metal. Repeat the soak if needed rather than scrubbing hard.

Is it safe to clean the heating element directly?

Only wipe the heating element with a dry cloth while the unit is unplugged and completely cool. Never use water on it. If you see heavy grease buildup, a dry brush or compressed air held at a distance can help. If the element looks damaged or corroded, contact Ninja support — do not try to repair it yourself.

How do I know if my air fryer needs deep cleaning?

If you notice smoke during cooking, a burnt smell, or uneven browning, deep cleaning usually fixes it. Grease and food particles block airflow and affect heat distribution. If the basket looks dark or greasy even after a quick rinse, it is time for a deep clean.

Can I use oven cleaner on my air fryer?

No. Oven cleaner is too harsh and can damage the non-stick coating, the heating element, and electrical components. Stick to warm water, mild dish soap, soft cloths, and non-abrasive sponges. These are gentler and work just as well for regular maintenance.