Between bake, broil, warm, start, cancel, light, timer, clock, and so on, the average oven has nearly as many buttons as a computer keyboard. Thankfully, most features are self-explanatory, which makes operating the oven a breeze. Be careful, though: While one particular setting may seem harmless, it comes with trade-offs many people don’t realize. Instead…

Can’t Stand the Heat

Ovens become greasy and dirty over time, whether from scattered pie crumbs or the juices that drip down while you’re roasting a turkey. When it’s time to clean, the last thing most people want to do is get on their hands and knees and scrub, which is why many use the oven’s self-clean feature instead. But while this setting is convenient, it isn’t always as simple — or as risk-free — as it seems.

Related: Clean Your Oven While You Sit on the Couch

The self-clean setting uses extreme heat to burn off residue and melt away grease. During this process, internal temperatures can reach 800 to 1,000 degrees Fahrenheit. This heat effectively turns food debris into ash, but it can also put added stress on critical components over time, including the control board, thermal fuses, heating elements, and temperature sensors. In some cases — particularly in older or heavily used ovens — this strain can lead to malfunctions or costly repairs.

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Additionally, despite its name, the self-clean cycle doesn’t actually leave your oven spotless. It works by turning grime into ash, which still needs to be wiped away once the oven cools. As the residue burns off, the oven may also produce smoke or noxious odors. While associated health issues are uncommon, this feature should be used sparingly rather than routinely.

To reduce the risk of problems, manufacturers typically recommend removing oven racks, aluminum foil, and any cookware before starting the cycle. It’s also a good idea to wipe up any large spills beforehand and run the hood vent or open a window to ventilate the kitchen. Keep any heat-sensitive items away from the unit as well. Your oven’s self-cleaning feature should only be used every few months at most — overdoing it can shorten the appliance’s lifespan.

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