Why Do Appliances with Heating Elements Use So Much Electricity?
Ever notice how your electric bill seems to spike in the winter when you're using space heaters or when you're baking up a storm during the holidays? That’s because appliances with heating elements—things like ovens, toasters, hair dryers, and space heaters—pull a lot more electricity than other household items. But why?
Why Heating Appliances Are Power Hogs
The key reason is simple: heat requires energy. Heating elements convert electricity into heat using resistance, meaning the appliance has to draw a lot of power to generate enough warmth. Compare that to something like a TV or LED light, which only need a small amount of electricity to function.
For example, a standard lightbulb might use 10–15 watts, but a space heater can easily pull 1,500 watts or more. That’s a huge difference!
The Dangers of Overloading a Circuit
Most household circuits are designed to handle a certain amount of electrical load, typically 15 or 20 amps. If you plug in multiple high-wattage appliances on the same circuit—like a space heater and a microwave—you could overload the circuit. When that happens, your breaker trips, cutting power to prevent overheating and potential electrical fires.
But sometimes, warning signs
appear before the breaker trips. If you notice:
- Flickering lights when an appliance turns on
- Warm or buzzing outlets
- Frequently tripping breakers
…it’s time to rethink what’s plugged in where.
How to Check an Appliance’s Power Draw
Every appliance has a label (usually on the back or bottom) listing its amperage (A) or wattage (W). To find out how many amps an appliance pulls, use this simple formula:
Amps = Watts ÷ Volts
Most U.S. homes run on 120-volt circuits, so if your space heater is 1,500 watts:
1,500W ÷ 120V = 12.5A
That means just one space heater could use most of a 15-amp circuit’s capacity—leaving little room for anything else.
Bottom Line
If your home has frequent breaker trips or warm outlets, be mindful of how many high-wattage appliances are running at the same time. Checking the amp draw of your devices can help prevent overloads and keep your home safe. When in doubt, spread out your appliances across multiple circuits or consider upgrading older wiring with the help of an electrician. Stay safe and warm—without overloading your home’s electrical system!
If you have any questions or need help with your electrical system in any way, give us a call at
940-390-7606
today!