Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: What is oven preheat time?
Document: This little gem has pretty much retired our oven. Bakes many of our meals in the time it takes for our regular oven just to preheat. We use this for almost everything, except Thanksgiving turkey, large roasts, cookies. It toasts beautifully - has several settings, from light to dark. Has a convection feature, besides a regular bake feature.
Sometimes I want to heat or bake something without firing up the regular oven. My oven takes a long time to preheat and it heats the kitchen, a problem in the hot Houston summers.This toaster oven is perfect! First of all, no preheat. Just put the food in, select the cooking mode and time and start. It doesn't heat the whole kitchen, although you can feel some warm air in the area right around the oven.The oven cooks quickly.
If you don't mind the cheap looking mottled, tarnished, roughly formed stainless steel ala "Chinese el cheapo" finish, you may find a place for it in your kitchen. Baking a few frozen items confirmed that the baking times are essentially the same as for a conventional oven without the preheat time. I thought convection ovens were faster but never had one so can't make a comparison on that score. Haven't tried to make toast yet but the frozen pizza came out with overcooked pepperoni on top with a soggy crust.
In reality, it does not have this feature. The manual mentions it but does not describe its operation, I called Frigidaire customer support and they also concluded that there is no preheat feature. What the oven DOES have is a little arrow on the display that tells you when the temperature is still rising to reach the desired setting, and when it reaches that temperature the convection fan turns on.
This oven only have infrared heating from the top. The bottom elements are conventional heating elements. Thus, this oven cannot be used as a "no preheat" oven because, if you do, the top of the food you cook will be burned while the bottom is uncooked.I bought it for the "no preheat" infrared feature. I was sadly disappointed. The interior is surprisingly small.I do not recommend this product.
I think that most toaster ovens are actually without any kind of practical preheat feature, but it is odd the Frigidaire mentions a feature that the product does not actually have.
I modified this unit to be used this as a solder reflow oven. Pleased to say that it works great for this purpose, my PCB's come out perfect every time.
Update: About six weeks after I started using the oven, the digital display went "goofy." The numbers in the time and temperature settings are hard to read because portions of them will be lit or not lit, seemingly randomly. It makes using the oven a bit more difficult, but not impossible.
I was attracted to this unit because of its good looks and when I saw that it had a digital timer, I thought it was the perfect unit.Unfortunately on the toast setting the time is pre-set! In other words, if tell the oven that you have two slices and you want it lightly toasted, the time is pre-set to 4:10 (or something like that).
To look at this toaster oven, it looks very cool. And sounded just what I was looking for. And the cost was right. BUT,the operation of this toaster oven doesn't even live up to your review. It is very hard to set the temperture and how long to have the food in the oven for. I have to repeatedly press the time and tempurature buttons to even get it to move even one (1) decimal.
Answer: About 5 minutes