Air fryers have become a modern kitchen favorite, praised for their speed, convenience, and ability to deliver crispy results with little to no oil. In many homes, they sit permanently on the countertop, ready to handle everything from quick weeknight dinners to reheated leftovers. Because they’re used so frequently, they often fade into the background of daily routines—just another appliance we assume is safe once the cooking is done. Yet that familiarity is exactly why one small habit is so often overlooked, especially at night.Despite their compact size, air fryers are powerful electrical devices. Inside the sleek casing are high-temperature heating elements, internal fans, and circuitry designed to work hard in a short amount of time. While manufacturers include safety features, no appliance is immune to wear, aging components, or rare electrical faults. Even when switched off, a plugged-in air fryer still draws a small amount of power and remains connected to your home’s electrical system. In uncommon but documented cases, residual heat, faulty wiring, or internal malfunctions have caused appliances to overheat unexpectedly, particularly when left unattended for long periods.Placement also plays a role in risk. Air fryers are often positioned near cabinets, paper towels, wooden cutting boards, or curtains—items that don’t mix well with heat. Grease buildup inside or beneath the unit can further increase danger, especially if airflow becomes restricted. Because of these factors, many safety experts recommend unplugging air fryers after each use, and especially before going to bed or leaving the house. It’s not a judgment on the appliance itself, but a precaution that reduces electrical load and eliminates the possibility of an unseen issue escalating while everyone sleeps.