Preheat the Air Fryer to 400 degrees Fahrenheit.
Place four egg rolls in an evenly spaced out proportion on the basket tray.
Set the timer to 15 minutes and temperature at 350 degrees Fahrenheit initially.
Let the Egg rolls cook for 5 minutes before taking the basket out and flipping them over.
Increase the temperature to 400 degrees and cook for another 5 minutes before checking once.
Based on the degree of crispiness of the outer coating, cook it for some more time.
Now that you know how long it took for the first batch of frozen egg rolls to crisp up and cook well, you can easily set the timer to a single setting without needing to check the next batch repeatedly.