Make Hard Boiled Eggs In The Air Fryer Add eggs to basket. I use 9 to 12 Temp 250 for 20 minutes. No preheating. Take eggs out with a pot holder. Put in bowl of ice Add ice to top. Refrigerate until ready to use. You can use them warm, but they need to cool. Crack it on the top skinny end, slice it. I also use an egg slicer.