Should you choose an air fryer with a pre-heat setting, and what do they actually do? We asked air fryer pros.

It says the device uses less energy to cook an entire meal than a convection oven uses to preheat. Since there's no preheating process involved either, Brava claims cooking times can be sometimes ...

Hartzell Propeller was awarded STC approval for its Tanis Helicopter Preheat Systems for Airbus H135 helicopters. The company’s preheat product line is designed to extend the lifespan of ...