You turn on the oven, set the temperature, and wait—but it never gets hot enough. Maybe the oven stays completely cold, takes much longer than usual to preheat, or cooks food unevenly. An oven not heating properly doesn't necessarily mean you need to replace the appliance. The cause could be a heating element, igniter, temperature sensor, electrical issue, or another component. Here are seven common reasons an oven may stop heating properly and what you can check before sched