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yes — you can safely use aluminum foil, parchment paper, and silicone in an air fryer. But each one has rules you have to follow. Break them and you’ll block airflow, ruin your food, or in the worst case start a fire. Follow them and you’ll cut your cleanup time in half.
Below I break down exactly when (and how) to use each material, which one I reach for most, and the specific mistakes that damage your air fryer or your dinner.
Foil vs. parchment vs. silicone: quick comparison
| Aluminum foil | Parchment paper | Silicone liner | |
|---|---|---|---|
| Safe to use? | Yes, with care | Yes, with care | Yes — safest option |
| Reusable? | No | No | Yes |
| Best for | Wrapping foods, easy cleanup | Sticky or crumbly foods | Everyday use and baking |
| Main risk | Blocks airflow; reacts with acidic food | Can lift into the heating element | Almost none (buy food-grade) |
| Airflow-friendly? | Only if you leave gaps | Only if perforated | Yes (perforated designs) |
Now the details.
Can you put aluminum foil in an air fryer?
Yes, aluminum foil is safe in an air fryer — as long as you follow three rules.
1. Never block the airflow. An air fryer cooks by whipping hot air around the basket. If you cover the whole bottom with a solid sheet of foil, that air can’t circulate, and your food comes out soggy and unevenly cooked. Leave the edges open, keep the basket’s vent holes clear, and poke a few holes in the foil if you’re lining the base.
2. Weigh it down. Foil is light and the fan is strong. A loose piece can lift up and hit the heating element — which is a genuine fire and damage risk. Always put food on top of the foil, and never run foil in an empty air fryer during preheat.
3. Skip it for acidic foods. Tomatoes, citrus, and vinegar-based marinades react with aluminum. That reaction can pit the foil, leave a metallic taste, and leach trace aluminum into your meal. For anything acidic, reach for parchment or silicone instead.
Foil is handy for wrapping fish into a quick packet or catching a greasy drip, but for everyday lining it’s honestly the fussiest of the three. A reusable silicone liner (check the current price on Amazon →) does the same job without the airflow headaches — more on that below.
Can you put parchment paper in an air fryer?
Yes — and it’s excellent for sticky or crumbly foods that would otherwise weld themselves to the basket. But parchment comes with the single most important safety rule in this entire guide:
Never preheat your air fryer with parchment paper inside and nothing on top of it. Parchment is feather-light. During preheat there’s no food holding it down, so the fan can lift it straight into the heating element, where it can scorch or catch fire. Always add your food first, then start cooking.
A few more parchment rules:
- Use perforated parchment. A solid sheet blocks airflow and leaves the bottom of your food damp. Pre-cut, perforated air fryer parchment liners (check the price on Amazon →) have holes that let the hot air move through.
- Mind the temperature. Most parchment is rated to around 420–450°F (215–230°C), which covers normal air fryer temps — but glance at the box to be sure.
- Never use wax paper. People mix these up constantly. Wax paper is not heat-resistant — it melts, smokes, and can catch fire. Parchment only.
Can you put silicone in an air fryer? (my go-to)
Yes — and food-grade silicone is the material I reach for more than the other two combined. Here’s why it wins:
- It’s reusable. Foil and parchment are one-and-done. A silicone liner rinses clean (or goes in the dishwasher) and lasts for years, so it pays for itself quickly.
- It’s heat-safe. Most food-grade silicone handles 400–450°F (200–230°C) or higher — comfortably within air fryer range.
- It won’t fly around. Silicone has enough weight and grip to stay put, so you completely avoid the parchment-in-the-heating-element problem.
- Airflow-friendly versions exist. Look for perforated silicone liners with holes so the air still circulates and your food actually crisps.
The one thing to check: make sure it’s labeled food-grade and rated for your air fryer’s maximum temperature. Cheap, unrated silicone can smell or break down over time.
I put together a full breakdown of the ones worth buying in my guide to reusable air fryer liners if you want specific picks.
5 air fryer liner rules you should never break
- Never run a liner during an empty preheat. Food goes in first — always.
- Never fully cover the basket. The air has to circulate, or your food won’t crisp.
- Nothing should touch the heating element. Keep liners below the food line.
- Use only heat-rated materials. Foil, parchment, or food-grade silicone — never paper towels or wax paper.
- Don’t overfill. A packed basket blocks airflow just like a solid liner does.
What you should never put in an air fryer
While we’re here, a quick list of things that don’t belong in the basket:
- Paper towels — a fire hazard, full stop. Not even to soak up grease.
- Wax paper — melts and smokes.
- Anything loose and light with no food weighing it down.
- Wet batter (straight liquid) — it drips through and burns before it sets. Chill it or use a coating instead.
- Non-oven-safe dishes — cheap plastic or anything not rated for high heat can warp or melt.
Frequently asked questions
It can. If you cover the entire bottom of the basket, hot air can’t circulate and your food cooks unevenly. Leave gaps or poke holes, and never cover the vents.
Both work in either type. But basket-style models usually have the fan up top, so lightweight parchment is more likely to get sucked upward. Weigh it down with food and you’re fine.
Food-grade silicone. It’s reusable, heat-safe, and won’t blow into the heating element the way paper can.
No. Paper towels are a fire risk and should never go in — not even to catch grease.
Yes, as long as it’s oven-safe and small enough to leave room for air to move around it. Skip anything plastic that isn’t rated for high heat.
A solid liner can block airflow and make food less crispy. Perforated liners — parchment or silicone with holes — solve this.
The bottom line
Foil, parchment, and silicone are all air-fryer safe when you stick to the basics: keep the air moving, weigh everything down, and never let a liner touch the heating element. If you want the simplest, safest option that you’ll actually reuse, go with a perforated food-grade silicone liner — it skips foil’s airflow fuss and parchment’s fire risk in one move.
Want the specific liners I recommend? Check out my full guide to reusable air fryer liners.