Winter is officially in full swing, as many states across the US have experienced their first snowfall of the season. During freezing temperatures, the worst thing anyone wants is feeling cold in their home. 

If you’re avoiding high utility bills by monitoring your heat and electricity, remember one thing: Space heaters, air fryers and those of the like should never, NEVER be plugged into any extension cord.

Paul Martinez, owner of Electrified NYC, warns that any appliance of more than 1,500 watts should always be plugged into a wall circuit. “No extension cords whatsoever,” he emphasizes for such appliances.

Extension cords aren’t equipped to hold that much electrical power, which can lead to cords overheating and burning. Ultimately, fires can erupt if not caught in time. If you’re unsure which devices and appliances shouldn’t be plugged into extension cords, here are seven to remember. 

Read more: The Coziest TV Shows to Binge This Winter Season

1. Air fryer


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Air fryers are great for quickly cooking and warming food, including full meals and side dishes, but it’s not a good idea to attach them to an extension cord or power strip. Although they range in wattage based on size, large air fryers can draw up to 2,000 watts, making them a major fire hazard if they’re attached to an extension cord. So if you don’t have counter space to keep your air fryer out full time, it’s best to pull it out when needed and plug it into a dedicated wall outlet.


From talking fridges to iPhones, our experts are here to help make the world a little less complicated.

2. Microwave

Many have homes with a built-in microwave, but not everybody has this feature. If you have to find a place to connect yours in your kitchen, this is another heavy-duty appliance that should live on its own dedicated circuit due to high wattage.

3. Extension cords

Plugging extension cords into other extension cords is another huge “no” in the electrician world. When this is done, it’s known as “daisy chaining.” It can lead to the circuit overheating, which would cause the cords to overheat.

4. Space heaters

Electric heaters have long been known to be a major cause of fires. The Consumer Product Safety Commission previously estimated that between 2017 and 2019, portable space heaters were involved in 1,700 fires per year, with some of those fires resulting in deaths.

“Let’s say you connect [an extension cord] to a floor heater,” Martinez says, “the plug melts and it starts a fire. That’s why you can’t use extension cords and/or power strips for any appliances, because they should be used for electronics only.”

Read more: Never Put a Space Heater in These 9 Places

5. Toaster and toaster oven

Although toasters are on the smaller side when it comes to kitchen appliances, they use a lot of energy and pose a fire threat if connected to an extension cord. Toaster ovens need even more power to operate with wattage ranging from 1,200 to 1,400 watts.

6.  Refrigerator

Although refrigerators use less wattage than some other kitchen appliances, they’re still not recommended for extension cord use as they are constantly running. Even if the extension cord doesn’t cause a fire when attached to a fridge, there’s a possibility it could cause the fridge to malfunction.

7. AC unit

AC units use too much power for an extension cord or power strip, so they need to be attached to a wall outlet as well. Martinez also stresses the importance of purchasing the correct AC unit for your space. You can use an online BTU calculator to calculate the type you will need to effectively cool your space.

“People just buy a 5,000 BTU air conditioner, because it’s $99 on sale, and they think it’s going to cool off [their home], and it does not, ” Martinez says. “[AC units] are supposed to cycle on and off, so they don’t pull that much energy. So if you undersize it, the compressor is going to work 10 times harder.”

This can result in your home never properly cooling off, a higher electricity bill, and if this AC unit is connected to an extension cord, possibly a fire.

The bottom line when it comes to extension cords

“A lot of people don’t have knowledge of extension cords,” said Martinez. “If extension cords are 14-gauge, and you’re running an appliance with a heating element, [such as] a toaster oven, microwave or dishwasher, a 14-gauge will not hold the amperage and can burn up the extension cord. And that’s what causes fires in New York City.”

He says you should also remember to only pair power strips with electronics, and that extension cords shouldn’t be used for anything above 15 amps (1,800 watts), regardless of where or how the item operates.

For more home tips, see how much you can save using a space heater (without plugging it into an extension cord) and learn where you should never put a home security camera.



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