Without knowing (but how could I find out in advance?) the GE 30" Free-Standing Electric Range has no count-down display for preheating. The online manual is no help whatsoever and there is nothing to indicate this problem on the range until one buys it, installs it, and turns it on. So how can one determine the amount of minutes/seconds it will take to preheat the oven at a particular temperature? I have never had an oven that did not have a count-down display for preheating. It is sometimes very inconvenient not to know what the lapse of time is before placing a dish in the oven. Sometimes a particular dish (such as a soufflé) must be placed in the oven at the optimum time for the dish to be successful, wherein delaying or extending preparation will have a negative effect. Sometimes guests or members of the household need this information. There ought to be a helpful chart available for customers who purchased this oven without being informed about its preheating problems. When discussing this with a CSR, I was told that they couldn't add such a feature due to individual variations in consumer use: such things as number of racks, humidity in the room, temperature in the room, temperature of the dish to be cooked, and so on. I was told to make up my own chart. In the process of doing their work for them, I discovered that all preheat times are about 30% longer than those of any other oven I have owned. Poor manufacturing and design decisions. I would never have purchased this product had I been informed of this unnecessary omission. I wonder what else will materialize and suggest that you purchase from a different manufacturer. If you look briefly, you will see that GE is not favored very highly.