7 Household Devices You Should Never Plug Into Extension Cords
Summer heatwaves often have people running air conditioners nonstop, while kitchen gadgets work overtime to prepare quick meals. However, an overlooked safety hazard in many homes is plugging powerful devices into extension cords. While extension cords are convenient for reaching outlets, certain high-wattage appliances can overload them, creating a serious fire risk. Knowing the devices you should never plug into extension cords can protect your home, appliances, and family.
Why Certain Devices Are Unsafe for Extension Cords
Extension cords are designed for temporary, low-power use—not as a permanent power source for heavy-duty appliances. High-wattage or heat-producing devices can cause cords to overheat, potentially melting insulation and sparking a fire. Appliances that run continuously or require significant electrical current should always have a dedicated wall outlet. This prevents excessive power draw, reduces wear on wiring, and ensures stable operation. Even high-quality surge protectors can’t safely handle the constant load from some devices.
Devices You Should Never Plug Into Extension Cords
1. Air Conditioners
Air conditioners, especially window units, are among the biggest offenders. They run for long periods and can draw between 500 to 2,000 watts depending on the model. This sustained power demand quickly overheats extension cords. Always plug AC units directly into a wall outlet on a dedicated circuit.
2. Air Fryers
Air fryers are small but mighty when it comes to power consumption. Large models can use up to 2,000 watts, making them a potential fire hazard if connected to an extension cord. To stay safe, plug them into a kitchen wall outlet only when in use, and store them away when not needed.
3. Space Heaters
Space heaters generate intense heat and typically consume 1,500 watts or more. This high draw is too much for extension cords, which can’t dissipate the heat safely. Always use a dedicated outlet and keep heaters away from flammable materials.
4. Microwaves
Microwaves heat food rapidly by using substantial electrical power—often exceeding 1,200 watts. Using them with an extension cord can cause overheating and voltage drops, reducing efficiency and increasing the risk of damage or fire.
5. Refrigerators and Freezers
These appliances may not always run at full capacity, but their compressors draw high bursts of power when cycling on. This can strain extension cords, leading to overheating. Keeping them on a dedicated outlet ensures consistent performance and safety.
6. Coffee Makers
While they seem harmless, coffee makers use heating elements that consume a lot of electricity in a short time. Plugging them directly into a wall outlet prevents potential cord damage and overheating.
7. Hair Dryers and Styling Tools
Hair dryers, curling irons, and straighteners pull significant wattage to generate heat quickly. They can overheat extension cords in minutes, so it’s best to plug them directly into a bathroom outlet and unplug them when finished.
Safer Power Practices at Home
If an appliance’s cord doesn’t reach the nearest outlet, consider rearranging your setup, adding more permanent outlets, or using heavy-duty extension cords rated for the specific load—but only as a temporary measure. Always check the wattage of your devices and ensure your home wiring is up to code. By understanding which devices you should never plug into extension cords, you reduce fire hazards, protect your electronics, and keep your household safe year-round.
