How Many Watts Does a Space Heater Really Consume?

Relocating from icy Minnesota to the sun-soaked climate of Texas was envisioned as an opportunity for extended periods of outdoor enjoyment—ideally over eight months annually. To make this dream a reality, I converted our garage into a home office. It’s equipped with a mosquito net and a home cinema system. My partner and I often retreat to this space even when temperatures drop below 50 degrees Fahrenheit. Here’s how we manage: space heater .

Space heaters send heat directly toward the user, making them an effective choice for adding extra warmth. chilly room Or an inadequate heating system. However, last year’s "bomb cyclone" during Christmas 2022 showed that a space heater has its limits. We ended up moving indoors.

Do you own a space heater? Are you aware of the cost associated with running it? Keep reading to discover your space heater’s energy consumption.

What Is the Power Consumption of a Space Heater in Watts?

Home-use electric space heaters typically have a maximum capacity of 1,500 watts, as stated by Ace Hardware in collaboration with Lasko, which produces home comfort items. (Operating your heater on a lower setting can decrease energy consumption.)

What Is the Amount of Electricity Consumed by a Space Heater?

A 1,500-watt electric space heater consumes 12.5 amps of current when operating at 120 volts. (Power equals amperage times voltage.) However, how does this impact your energy costs?

The utility does not bill you based on the amount of electricity in amps. Instead, they charge you according to the power usage, which is calculated in kilowatt-hours (kWh).

To determine the energy consumption of a space heater in kilowatt-hours and thus calculate the cost of running it, multiply the wattage rating of the space heater by the number of hours used each day. Next, divide this result by 1,000 to convert it into kilowatt-hours.

Suppose you have an at-home workspace set up in your garage, similar to mine, and you operate a 1,500-watt space heater for eight hours daily. That would amount to 1,500 watts multiplied by 8 hours divided by 1,000, equating to 12 kWh. Based on data from November 2022 provided by the U.S. Bureau of Labor Statistics, the national average price for electricity stood at $0.163 per kilowatt-hour. Consequently, this means that using your heater costs around 12 kWh times $0.163, totaling approximately $1.96 each day.

In short: Running a 1,500-watt space heater for eight hours daily will set you back approximately $2 each day, based on typical electric rates.

Does Using Space Heaters Consume A Significant Amount Of Electricity?

It varies depending on your perspective.

Heat generators such as dryers, resistive units, and infrared Space heaters and furnaces typically consume more power compared to gadgets such as computers. Now that we understand how to determine the expense associated with running your space heater, let’s contrast these figures with the consumption patterns of other household items and electronics.

Television

Look at the rear of your television to find out its usual wattage consumption. Mine consumes around 73 watts. average for its size That’s right! A television with a 73-watt rating uses far less energy compared to a space heater that has a 1,500-watt consumption rate.

Operating a 73-watt television for four hours daily would cost roughly five cents per day, amounting to just over $17 annually. This estimation excludes additional factors. vampire energy . In comparison, a 1,500-watt space heater running four hours a day costs nearly $1 per day, or about $88 for three months of daily winter usage.

Laptop computer

Laptops obtain power via their chargers and rely on the battery when they're not connected. The amount of energy a laptop consumes changes based on its activity. Simply checking emails requires much less power compared to playing games.

A laptop with a power consumption of 96 watts, when charged for two hours each day, incurs approximately three cents per day, which amounts to roughly $11.42 annually.

Vacuum cleaner

As stated by MHealthy, a vacuum cleaner typically consumes between 1,000 to 1,440 watts; however, different models can have varying wattages (my model is rated at just 840 watts). For an accurate measurement of your particular unit’s energy consumption, check the label located on your vacuum. Calculate this figure by multiplying the ampere rating with the operating voltage to determine the power used in watts, followed by applying the relevant calculation method.

A vacuum cleaner with a power rating of 1,000 watts that operates for an hour each week uses up one kilowatt-hour (kWh) of electricity. Given the typical cost of $0.163 per kWh, this would result in annual operating expenses of approximately $8.50.

Clothes dryer

The average family does 300 loads of laundry That amounts to approximately $245 annually for a 5,000-watt clothing dryer, which makes it one of the most significant energy consumers in your house. If you were to run a 1,500-watt space heater for the equivalent of 300 hours, based on the previously mentioned typical electricity price, it would amount to roughly $73.35 per year.

FAQs

What steps can I take to decrease the power usage of my space heater?

You can employ two fundamental approaches:

• Run the heater intermittently. Should your heater include a timer function, configure it to turn off after a specific duration, and refrain from restarting it until absolutely necessary. For those without such functionality, this process can be done manually instead.
• Lower the thermostat, If your heater includes one, many space heaters come with energy-saving (ECO) modes that enable them to operate at reduced power levels. Utilizing this low-power mode can decrease electricity consumption by nearly fifty percent.

In addition to these methods, you can reduce your overall energy expenses (beyond just cutting down on your space heater usage) by increasing the insulation in your home.

For how many hours can I leave a space heater running without interruption?

It takes about four to six hours for most models. Continuous operation risks overheating and fire, especially if you’re sleeping or not in the same room as the heater. If your heater has been running for several hours, you should turn it off if you notice any of the following:

• strange odors;
• unusual sounds;
• fluctuations in heat output;
• frequently tripping circuit breakers.

How to Select the Top-Rated Space Heater

Regardless of whether you're warming up a room, garage, or greenhouse, discover how to select the appropriate space heater with both safety and efficiency considerations in focus.

• Key Points About Space Heaters
• The Top Space Heater for Each Room
• The Safest Space Heaters
• Top Energy-Saving Space Heaters
• What Are Infrared Space Heaters and What Is Their Function?
• Best Infrared Space Heaters
• Why Extension Cords Are Not Suitable for Space Heaters
• What Is the Price of Heating a Garage?
• Best Garage Heaters
• The Mr. Heater Workshop Heater
• Best Portable Bathroom Heaters
• The Lasko Portable Space Heater Has Become an Indispensable Part of My Bathroom Setup
• Top Greenhouse Heaters for Effective Plant Development

Sources

• United States Bureau of Labor Statistics : Mean energy costs for the U.S., various regions, census divisions, and chosen metro areas; (2024)
• Eco Cost Savings : TV Power Consumption – Top Energy-Efficient TVs for 2024 Unveiled [Including Statistics] ; (2024)
• M Healthy : Household Appliance Electricity Consumption & Comparable Physical Activity ; (2024)
• National Park Service : Laundry Practices and Water Conservation ; (2021)