Nothing derails a Tuesday night dinner faster than turning on your oven and realizing it's stone cold twenty minutes later. Before you panic or spend $150-$250 on a service call, there are several things you can check yourself. Most oven heating problems come down to a handful of common culprits, and some are surprisingly simple to fix.
Check the Obvious First
Start with the basics. Is the oven actually getting power? Check your circuit breaker panel—a tripped 240-volt breaker can look like it's still on. Flip it fully off, then back on. For gas ovens, make sure your gas supply valve didn't accidentally get turned off during cleaning.
Next, verify you're setting the oven correctly. Some modern ovens require you to press "Start" after setting the temperature. It sounds simple, but we've seen plenty of service calls that ended with a quick button press.
Electric Oven: Testing the Heating Element
Electric ovens have two heating elements—a bake element on the bottom and a broil element on top. Turn on your oven and watch both elements. They should glow bright red within a few minutes. If one stays dark, that's likely your problem.
A replacement bake element typically costs $30-$60 and is one of the easier DIY repairs. Unplug the oven, remove two screws at the back of the element, and disconnect the wire terminals. Installation is the reverse. Just make sure you buy the exact replacement for your model number.
If the element looks fine but still won't heat, the issue might be the temperature sensor or oven control board—both jobs better left to professionals.
Gas Oven: Igniters and Safety Valves
Gas ovens rely on an igniter to open the gas valve and light the burner. Turn on your oven and watch through the window. You should see the igniter glow bright white for 60-90 seconds, then hear the gas ignite with a "whoosh."
If the igniter glows but the gas never lights, the igniter is weak and needs replacement (usually $40-$80 for the part). If nothing glows at all, check for a tripped breaker—gas ovens still need electricity for the igniter.
A faulty gas safety valve can also prevent heating, but this repair requires working with gas lines and should be handled by a licensed technician.
When to Call a Professional
If you've checked these items and your oven still won't heat, it's time for professional help. Problems with control boards, temperature sensors, or gas valves require proper diagnostic tools and expertise. A typical repair runs $200-$400 depending on parts.
Here's the tough question: if your oven is more than 12-15 years old, that repair cost might be better invested in a new appliance. We regularly help San Antonio families weigh repair versus replacement, and sometimes a fresh start makes more sense—especially with CPS Energy rebates available on energy-efficient models. When one appliance fails, it's also worth considering whether other aging units might follow soon. Check out our $899 in-stock washer and refrigerator options if you're thinking about upgrading multiple appliances at once.