9 Things You Shouldn’t Plug in Together (Even if They Fit)

Just because it fits in the outlet doesn’t mean it’s safe. Some combinations overload circuits, heat up cords, or create fire hazards. Here are the things you shouldn’t plug in at the same time.

Microwave and Toaster

Both pull a lot of power fast. Running them on the same circuit can trip the breaker—or worse, start a fire. Use separate outlets when possible, especially in older homes.

Air Conditioner and Fridge

These two large appliances cycle on and off, which means power spikes. When they’re on the same circuit, it puts stress on the wiring and risks shorting out your system.

Space Heater and Anything Else

Space heaters should always have their own outlet. They draw high wattage constantly and don’t leave room for anything else. Never plug them into power strips, either.

Washer and Dryer (Electric)

If your washer plugs into a regular outlet and your dryer is electric, don’t assume they can share a circuit. Together, they overload most household wiring fast.

Multiple Kitchen Appliances

Blender, mixer, coffee pot, and air fryer all at once? That’s too much for one plug strip. Rotate use or split them across different circuits to avoid overloads.

Hair Dryer and Curling Iron

Both get hot and pull serious wattage. Using them together in one outlet, especially with other bathroom gadgets, is a fire risk waiting to happen.

TV and Gaming Console with a Space Heater

It’s a common winter setup, but adding a space heater to an entertainment center can overheat the circuit and cause damage to both the devices and the wiring.

Refrigerator and Chest Freezer

It might seem efficient to keep these together, but both cycle often and pull a heavy load. Put them on separate circuits or risk damaging the compressor motors.

Power Strip into Another Power Strip

Also known as “daisy chaining,” this is one of the most common and dangerous habits. It overloads the entire setup and isn’t protected by one surge protector alone. Use a proper surge protector, and keep high-wattage items separate.

*This article was developed with AI-powered tools and has been carefully reviewed by our editors.