Frigidaire LGEF3045KFA Gallery 30'' Freestanding Electric Range

The cookware material can impact how evenly and quickly heat is transferred from the surface element on your ceramic / glass cooktop to the bottom of the cookware.

Here are some helpful tips regarding the most popular cookware materials:

Aluminum - Excellent heat conductor. Some types of food will cause the cookware to darken. If aluminum pans slide across the ceramic/glass cooktop, they may leave metal marks which will resemble scratches. You will want to try and remove immediately.
Copper - Excellent heat conductor but discolors easily.Stainless - Slow heat conductor with uneven cooking results. It is durable, easy to clean and resists staining.
Cast Iron - A slow heat conductor however it retains heat very well. Cooks evenly once desired temperature is reached. Not recommended for use on ceramic/glass cooktops.
Porcelain - enamel on metal - Heating characteristics will vary depending on base material. Coating must be smooth to avoid scratching cooktop.
Glass - Slow heat conductor. Not recommended for ceramic/glass cooktop surfaces because it may scratch the glass.If you're inquiring about an Induction cooktop surface, please go here

Yes, it is normal to hear your oven fan running when you turn on the oven including during preheat.

The fan helps circulate the oven temperatures and will come on and off during the baking process. The fan may stay on after you have finished baking and turned the oven off. The fan will stop once the internal temperature of the oven cools down.