Do Space Heaters Drain Energy? Find Out Here!

Space heaters do use a lot of electricity, especially if used for extended periods of time. Space heaters are a popular choice during colder months as they provide localized heat and can be easily moved from room to room.

However, it’s important to consider the amount of electricity they consume. The average space heater uses around 1500 watts of power per hour, which can quickly add up to a significant increase in your electricity bill. It’s also important to consider the safety risks associated with space heaters and to follow the manufacturer’s instructions closely to avoid any potential hazards.

Despite their convenience, it’s important to weigh the cost and safety factors before relying solely on space heaters for warmth in your home.

Do Space Heaters Drain Energy? Find Out Here!


Energy Consumption Of Space Heaters

Factors That Influence The Energy Consumption Of Space Heaters

Space heaters are an excellent way to warm up a room or an area without having to spend a lot of money on central heating. However, just like any other appliance, space heaters consume energy, and their electricity consumption can vary based on several factors.

Let’s have a look at some of the factors that influence the energy consumption of space heaters:

  • Wattage: The higher the wattage of a space heater, the more electricity it will consume. Generally, space heaters come in wattage ranging from 600 watts to 1500 watts.
  • Heating capacity: The space heater’s heating capacity determines how much area it can cover and, as a result, how much energy it will consume. If your space heater has to heat up a large space, it will consume more energy than if it were heating up a smaller area.
  • Thermostat settings: Space heaters have thermostats that allow you to set the temperature you want to achieve. If you set the thermostat to a higher temperature, the heater will consume more energy.
  • Duration of usage: The longer you use the space heater, the more energy it will consume.
  • Room insulation: If your room is poorly insulated, then the space heater will consume more energy trying to warm it up.

How Space Heaters Compare To Other Heating Systems In Terms Of Energy Consumption

When it comes to comparing heating systems’ energy consumption, space heaters are known for being energy efficient and cost-effective. Here are some ways space heaters compare to other heating options:

  • Space heaters consume less energy than central heating systems as they only heat up a designated area or room.
  • Space heaters are portable and can be easily moved from one room to another. This feature allows you to only heat up the room you are using, making it more energy-efficient than central heating.
  • Space heaters are generally cheaper to purchase than central heating systems.
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While space heaters may consume more electricity than some other heating options, their energy efficiency and portability make them a great option for home heating.

Measuring And Calculating The Energy Consumption Of A Space Heater

Calculating the energy consumption of a space heater can help you to understand how much it costs you to use it and how to manage your energy consumption. Here are some steps you can follow to measure and calculate the energy consumption of a space heater:

  • Look for the wattage of your space heater. You can find this on the manufacturer’s label at the bottom or back of the heater.
  • Determine the price you pay per kilowatt-hour (kwh) by checking your electricity bill or contacting your electricity provider.
  • Multiply the wattage of your heater by the number of hours you use it per day.
  • Multiply the result by the price you pay per kwh to get the daily cost of using your space heater.

For example, if you have a 1500-watt space heater that you use for five hours a day, and your electricity price is $0. 12 per kwh, the cost of running your heater per day will be $0. 90 (1500 x 5 x 0.

12 = 900 cents = $9. 00/100 = $0. 90).

Space heaters are energy-efficient and cost-effective options for home heating, and understanding the factors that influence their energy consumption and how to measure it can help you make informed choices about your energy usage.

Impact Of Space Heaters On Monthly Electric Bills

Understanding How Much Energy A Space Heater Adds To Your Bill

If you’re a space heater user, you might be worried about its impact on your energy bills. The truth is, space heaters can drain your energy, but the amount varies. Here are some things you should know:

  • The amount of energy a space heater uses depends on its wattage.
  • Most space heaters range from 600-1500 watts.
  • On average, using a 1500 watt space heater for 8 hours a day would cost you around $45 a month.

Factors That Influence The Impact Of Space Heaters On Energy Bills

The amount of energy a space heater uses also depends on various factors. Here are some of them:

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  • The size of your room: A larger room requires a higher wattage heater than a smaller room.
  • The insulation of your walls and windows: If your home is not well-insulated, your heater will work harder, draining more energy.
  • The temperature you set on your heater: The higher the temperature, the more energy required to maintain it.

How To Estimate The Effect Of Space Heaters On Utility Bills

To determine the impact of a space heater on your utility bills, you can follow these simple steps:

  • Check the wattage of your space heater. This information is usually on a label on the outside of the heater.
  • Determine how many hours a day you use the space heater.
  • Look up your local electricity rate per kilowatt-hour. This information should be available on your electricity bill.
  • Do the math: Multiply the wattage of your heater by the number of hours you use it each day, and then divide by 1000 to get the number of kilowatt-hours used each day. Finally, multiply the kilowatt-hours by your electricity rate to get the daily cost. Repeat this process for the month to get the total monthly cost.

By following these steps, you can get a rough estimate of how much a space heater is adding to your utility bills.

Ways To Reduce Energy Consumption Of Space Heaters

Best Practices For Using Space Heaters Efficiently And Effectively

Space heaters are great for warming small areas in your home or office. However, they can drain a lot of energy if not used efficiently. To get the most out of your space heater while keeping your energy usage low, follow these best practices:

  • Place your heater on a flat surface: Placing your space heater on an uneven surface can cause it to tip over, which can be dangerous. Make sure you place your heater on a flat surface away from flammable objects, such as curtains, papers, or fabrics.
  • Keep it away from moisture: Never use your space heater in damp areas, such as bathrooms, basements, or kitchens. Moisture can cause your heater to malfunction, and it can also be a fire hazard.
  • Set the thermostat appropriately: Make sure you set your space heater’s thermostat to an appropriate temperature. Most heaters have a range of 60-90 degrees fahrenheit. Choose the temperature that’s most comfortable for your needs.
  • Turn it off when you don’t need it: Remember to turn off your space heater when you’re not using it, especially if you’re leaving the room or your home. Leaving it on unnecessarily can cause it to drain energy unnecessarily.
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Alternative Ways To Save Energy And Reduce Heating Costs

Besides following the best practices outlined above, there are other ways you can reduce your heating costs and save energy. Consider these alternative methods:

  • Use a programmable thermostat: A programmable thermostat can help you save on energy costs by automatically turning down the heat when you’re not at home or when you’re sleeping. Set it to lower temperatures during the day and at night when you don’t need it, and turn it up when you’re home.
  • Insulate windows and doors: Insulation options include weatherstripping and caulking around doors and windows, adding insulation in the attic and walls, and installing energy-efficient windows and doors.
  • Use a fan: A ceiling or floor fan can help circulate warm air in your room, which can help reduce the need for a space heater or central heating system. This will help you save money on your energy bills.
  • Use thermal drapes: Thermal drapes are an excellent way to keep the cold out of your home or office. They create a barrier between your room and the outside, preventing drafts from entering your space.

By following these best practices for using space heaters efficiently and effectively and considering alternative ways to save energy and reduce heating costs, you’ll be able to keep your home or office comfortably warm without draining your wallet.


Considering the financial burden that comes with home heating, the cost of using space heaters needs to be considered. As we have established, space heaters can be energy-efficient when used properly, and their electricity consumption relies heavily on the wattage, usage, and frequency of use.

Before purchasing a space heater, it’s important to consider its running costs, such as the electricity rates in your area, the durability and efficiency of the device, and your overall heating needs. By following these guidelines, you can easily reduce your energy bills and improve your energy consumption habits while staying warm and comfortable.

Remember to always use space heaters according to their manufacturer’s instructions, and practise safety by not leaving them unattended and keeping them away from flammable items. With proper use and consideration, space heaters can be a great addition to your home’s heating solutions.


I am a mechanical engineer and love doing research on different home and outdoor heating options. When I am not working, I love spending time with my family and friends. I also enjoy blogging about my findings and helping others to find the best heating options for their needs.