Preheat the air fryer to 350°F (175°C). This temperature ensures even reheating and prevents the hot dogs from drying out. The air fryer takes 2-3 minutes to preheat.

Remove the hot dogs from the refrigerator. If leftover hot dogs have been stored in the fridge in buns, now is the time to remove them. The hot dogs and buns should be reheated separately, or you should discard the old buns and use fresh buns instead.

Make small, shallow cuts along the length of each hot dog to prevent them from bursting while reheating in the air fryer. This allows excess steam to escape.

Place the hot dogs in the air fryer basket with even spacing in a single layer. Avoid overcrowding the air fryer basket, or the hot dogs won’t reheat evenly.

Heat the hot dogs for 3-5 minutes, flipping them halfway through the cooking time.

If you intend to reheat leftover hot dog buns, add them to the air fryer for 1-2 minutes while the hot dogs cool slightly.

You can check if the hot dogs are adequately reheated by inserting a meat thermometer into a hot dog which should read 165F for food safety. Add another minute or two to the cooking time if required.

Once reheated, assemble the hot dogs in crispy buns and serve them alongside your favorite condiments and side dishes.