A slow-heating oven could be caused by a faulty heating element, a bad thermostat, or even buildup around the sensors. It’s best to get it diagnosed before it becomes worse. Companies like Astera Services https://www.asteraservice.com/ specialize in heating, cooling and appliance installing and repair, which includes kitchen ovens. They can run a quick inspection, replace worn-out parts, and get your oven back to proper performance.