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How Much Electricity Does A Space Heater Use?

Maybe you have heard that Space Heater is the intense electricity consumer. In deed! For the practical number, read our post to know how much power does a space heater use.

How Much Electricity Does A Space Heater Use

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Recently, I got several emails regarding the same issue. Does a space heater consume a lot of electricity?

One email came from Lily – one of my enthusiastic readers. She said that her space heater consumes a lot of power, resulting in a high electricity bill.

Another from my relatives. He has saved money on electricity bill due to the use of a space heater.

Do you want to know how such a small device can make the difference? It depends on your frequency and methods of using the heater.

In this article, I will let you know the reasons for these differences, how to calculate your space heater electricity, and other related information.

Now, it’s time to find the answer to the question – how much electricity does a space heater use?

How Much Electricity does a Space Heater Use?

How Much Electricity Does A Space Heater Use

To find out how much electricity your space heater uses, you must know its wattage, which is usually printed on the model itself or in the manual.

The majority of electric heaters consumes about 1.500 watts. So, how much does a 1500 watt heater cost to run per hour?

Keep in mind this formula:

1.000 watts equals 1 kilowatt.

That means that your electric heater consumes about 1.5 kilowatts of power.

Apply this formula to calculate how much your space heater energy cost to run a 1500-watt heater for 24 hours:

1.500 x 24 hours = 36.000

After that, let’s divide this number by 1.000

36.000/ 1.000 = 36

The next step is to multiply the result by the rate your utility charges for electricity.

If the utility company charges $0.28 for electricity, you can follow the formula below:

36 x 0.28 = 10.08.

How to Use Your Space Heater Wisely?

How to use your space heater wisely

Many people think that using a big heater to warm up a small room is ideal, but it’s actually a no-no. Although the big-sized heater can warm up your room quickly, it will also consume a lot of energy at the same time, adding more to the electricity bill.

So, to avoid this problem, you should read the recommendations made by the manufacturers.

Can you use a small heater for a big room?

You think that after a while, the heat will fill your whole room eventually, right? Unfortunately, it doesn’t always work that way.

I strongly recommend you to use a suitable heater in a suitable-sized room and don’t make it overwork in a too large or too small space.

How to Use Space Heaters to Save Energy

How to Use Space Heaters to Save Energy

First of all, keep in mind that you can’t use a space heater as a primary heat source in your home. It is only a supplemental heating source, working in tandem with your central heating.

If you want to save money and energy, you should lower your thermostat and heat your room with a space heater. According to the Department of Energy, another way to save as much as 10% on energy and cost is to turn your thermostat back 7-10°F for every eight hours per day from its standard setting.

How to Maximize the Space Heater’s Efficiency

How to maximize the efficiency

To make sure you always use your space heater efficiently and adequately, you must follow the instruction written in the user manual.

If possible, you should invest in best space heaters with smart features or programmable thermostats, which can maintain consistent temperatures to minimize the use of energy.

Here are my examples:

While the digital ceramic tower heater has save-smart control, the ceramic pedestal heater comes with remote control, providing advanced and smart energy-saving technology.

Its programmable thermostat takes responsibility for maintaining a low-heat setting, using less energy.

When you adjust your heater in the low setting, the electricity will reduce as much as 60%.

Choosing a heater with the appropriate size for your room is very important. While a big heater suits a larger enclosed space (up to 300 square feet), a small and compact one works well in home office spaces and enclosed bedrooms.

When you don’t use your heater, remember to power off and unplug it to save money on your energy bills.

How to Choose a Space Heater

If you want to use a heater as effective as possible, you must know how to choose a proper space heater.

Heater technology

Convection heater

This technology applies the natural air movement to warm the cool ambient air. The convection heater will heat cool air in your room. Basically, it moves along the bottom of exterior walls, sliding glass doors, close to drafty windows, and across your hardwood or tiled floors to minimize heat loss as well as block out all cold drafts.

Radiant heater

How to generate, disperse, and use between convection heater and the radiant heater are totally different.

Radiant heater transfers energy from source to source through photons, which generate heat as well as the energy absorbed by items in your room and under your skin.

This kind of heater works without producing noise, so it’s ideal for putting in your office or bedroom. Furthermore, it is also very beneficial for allergy suffers because the radiant heater doesn’t disperse the warm air with a fan, leading to dust accumulation.


As the name suggests, this heater uses an internal fan to move and dissipate warmth around your room quickly.

The current market has fan-forced radiant heaters and fan-forced convection heaters so that you can choose depending on your demands.

Heater factors

These heater factors include type, style, size, and safety.


There are three types of heaters:

  • Ceramic heaters work with a ceramic heating element, so it is pretty safe. Specifically, the high thermal threshold of the ceramic heaters allows the heating element to act as its thermostat.
  • Oil-filled heater suits to use in bedrooms because of their energy-efficient heating and extremely quiet operation.
  • Infrared heaters work through invisible light.

Let’s imagine how the sun heats!

That’s it!

Its energy source is photons because it works under the radiant heater’s technology.


You may be overwhelmed with a wide range of personal heater styles on the market from oil-filled radiators, baseboard heaters, wall heaters, tower heaters, to heater fans.

  • Baseboard heaters work well in old houses which have hardwood floors and tiles because it will absorb cold drafts from doors or windows regularly.
  • Compact space heaters are great to put in any space. However, I strongly recommend you to place it in your dorm room, office cubicles, and bedrooms.
  • Tower heaters suit people who want to move it from place to place.
  • Wall heaters can be used as a piece of furniture on interior walls. You can use them as decorations for your living room, bedroom, bathroom, and dens.


To determine this element, you must know how large your space is because a space heater uses 10 watts of heating power for a square foot.

For example, an average 1.500-watt heater can heat up to 150 square feet (average size bedroom)


I believe that safety should be the top priority when choosing a heater to avoid possible dangers for your children and pets. Thus, you should seek a heater with overheat protection that will turn the unit off when the internal heating elements reach an unsafe level of temperature to preserve the heater and prevent electrical circuit damage.

Another safety feature is the tip-over protection, which also can be turned off to minimize the risks of fire when someone tips it over or knocks down accidentally. You can consult tips at here.

The Benefits of Space Heaters

A space heater is an ideal solution to add more heat into a few areas of your house. It has two main advantages:

Low energy cost

To warm a small space, a space heater is a reasonable choice than a whole central heater because it only focuses on warming a few specific areas instead of your entire room. This way helps you save a large amount of money on energy bills.

Greater energy efficiency

This heater consumes less electricity than others, limiting the environmental impact on your home.

Warnings: To avoid causing any unexpected accidents, you have to keep your space heater away from draperies, bedding, upholstered, or covered furniture.

Use your space heater wiser!

Do space heaters use a lot of electricity? Perhaps you can find out now.

The best space heaters are the best portable heaters, so you can move from place to place to heat and warm essential areas. This way helps you save a great deal of money and electricity monthly. Keep this rule in mind to make wise decisions.

My article has covered pretty enough information about a space heater, but if you have any further questions, please leave your comment in the section below. Also, don’t forget to like and share if you find my article informative.

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