How Long Can You Run A Wall Heater?

Wall heaters are ideal for heating a chilly room or even a whole house. But maybe you are wondering how long you can run a wall heater. We did in-depth research to answer this question.

Companies claim it is safe to keep the heater on all night, but it's important to remember that electric components will never perform at 100 percent efficiency. Because of this, turn off the wall heater about three hours before going to bed. This will ensure that the room stays warm for several hours.

Compared to space heaters, wall-mounted heaters, such as electric baseboard and wall panel units, have many features that make them safer to operate by design. Please continue reading to learn more about how long you can leave wall heaters on and their safety measures.

Wall-mounted heater, How Long Can You Run A Wall Heater?

How Long Should Electric Heaters Remain On?

Electric heater

You can leave a high-end heater on for at least 10 hours without causing any problems. Most fire safety experts recommend switching on the heater for two to three hours before turning it off when going to bed.

Despite the built-in safety precautions of modern heaters, you should never leave a space heater on overnight.

Turning off your heater at night is a good idea whether it uses gas or electricity since it has an element that can get hot enough to spark a fire.

Are Wall Heaters Dangerous?

A wall-mounted electric convection heater in a house room.

Are you considering the security of a wall heater? The wall-mounted Runtal units provide a lot of heat while maintaining a cool surface. The maximum temperature several wall heaters can reach is 600 degrees Fahrenheit!

They are a burn or shock hazard and fire risk, particularly for kids and pets. Using one of these heating systems poses the most significant threat to your property because of the potential for fire.

A fire hazard exists even though there are no open flames, flammable oils, gasses, or easily ignitable materials like wood. Space heaters rather than furnaces are the primary source of home heater fires.

Although it's possible, it's pretty unusual for a gas heater to catch fire or explode. The heater will typically abruptly turn off if there is a chance that this will happen.

Which Heaters Can You Safely Leave On All Night?

Nothing beats a toasty, comfortable bedroom once fall arrives. Some heaters can run day and night, while others can be dangerous if used for an extended period.

Be sure to understand which kinds of radiators can handle an extended shift if you're considering leaving the heaters on overnight. The following heaters are safe to use overnight, and you can leave them on:

1. Oil Heaters 

Among the variety of radiators, oil heaters are the safest. Although these radiators are electric, portable heaters, they resemble standard radiators used in homes.

Oil is heated inside the heater before being pushed around the radiator's blades. Heat is released into the air as the blades heat up along with the surface temperature.

Since oil-filled radiators don't have any exposed heat source, there is little chance that anything around them may catch fire.

Although they take some time to warm up, they continue to emit heat even after being turned off. Therefore, they can enable you to save money on power.

But the heaters are a potential hazard to children if they touch the radiators while they are still hot.

2. Infrared Heaters

This kind of heater is similar to sunlight. It warms people and things instead of the air surrounding them. Infrared heaters may typically be left on all night.

They are reliable and include safety shut-off controls in case they tip over or become too hot. Any modern heater worth its salt has these features. Despite this, you should exercise caution if you leave one on while you are out or asleep.

We advise you to use the available timer feature to turn the heater off automatically after a predetermined period. This can be perfect if you only need the room to be a little warmer while you sleep.

Check to see that the heater is in good shape and isn't covered, particularly by something flammable. Make sure to look closely for any heating damage or frayed power cords.

Find this Infrared heater on Amazon.

3. Ceramic Heaters

Ceramic heaters function by using electricity to warm ceramic plates inside them. The heaters then spread the heat from these plates throughout the space.

These units are harmless because they use electricity rather than burn combustible fuels. Only heaters that burn flammable fuel produce carbon monoxide.

Additionally, the outside of a ceramic heater remains cool while the heating components inside get hot and release warm air into the room.

Thus, ceramic heaters are safer for people, pets, and kids in the house because your pets won't get burned if they accidentally brush up against this heater.

Where Are Wall Heaters Supposed To Go?

Central heating radiator

It is suitable to install wall heaters under windows. Wall strip panel heaters, which are a lower and longer choice, can be used if you don't have enough room for panel heaters.

Putting heaters under the windows can prevent chilly draughts along the floor since the heater will warm the cold air that is dropping from the window glass.

This heater uses air currents to heat a space. Warm air (convection currents) rises in the space as the cold air descends to absorb heat from the heater. Since the heater cannot heat cold air below a certain height, it is located close to the room's floor.

You should set heaters at least 4 inches off the ground. In addition, leave 4 inches between them and anything else, such as a sofa. You can find a template and mounting guide with step-by-step instructions for mounting the heater on a wall in the packaging's lid. 

How To Choose A Wall Heater 

Man installing room heater on the wall

Listed below are some details you should be aware of before making an electric wall heater purchase:

Knowing which room you'll put the heater in is crucial. For example, a forced-fan heater would be more suited for heating a small space, whereas a convection heater would be better suited for whole-room heating requirements.

Another crucial aspect to take into account is the heating capacity. The heater will struggle to keep your space at a comfortable temperature if its heating capability is off. 

Typically, 10 watts are sufficient to illuminate a surface area of 1 square foot. So measure the room before buying a heater.

The usage of the space is another important consideration. Heaters installed in bedrooms should be quieter than those mounted in living areas. If you have difficulties sleeping, do not use forced-fan heaters in bedrooms because they may be noisy.

Consider the unit's energy efficiency. Otherwise, you may find that you are paying too much for heating when there may be less expensive alternatives.

Don't forget to consider your safety since handling these heaters can cause accidents and burns. Safety is especially crucial in homes with kids and pets. For households with children and pets, cool-to-touch exteriors are essential.

Also, invest in heaters with automatic shutdown capabilities that switch the heater off to minimize component overheating.

Check out this Envi Wall Heater on Amazon. 

How Much Does An Electric Heater Cost To Run 

Wall-Mounted Electric Convection Heater

Electric heaters convert almost all of the electricity that they draw. Around 5,000 BTU of heat is produced by typical electric heaters that use 1,500 watts.

It is simple to compute the cost of using a 1,500-watt electric heater for an hour.

Here is the formula: Power (W) * Electricity Price ($/kWh) / 1,000 equals the hourly cost of running a heater (you can use an electric heater running cost calculator for various wattages/kWh prices)

Example: Assume the price of electricity is $0.15 per kWh.

To calculate the rate of running a 1,500-watt electric space heater, multiply the power (1500-watt) by the price of electricity($0.15 per kWh) and then divide by 1000. You will get $0.22, which will be your hourly cost.

These will be the associated costs of operating the 1,500-watt electric space heater:

$0.22 per hour. $5.28 per 24 hours of use (day) $8.32 per hour of operation each week $52.80 to operate (8 hours/day) Monthly


In areas with harsh weather and colder climates, heating is vital. You should choose a heating strategy that suits you and your particular circumstances, even if it can be challenging to reduce heating expenditures and electricity bills.

You can use electric heating, a space heater, or even a combination of the two depending on whether you have a little or vast space.

Here are some related posts that you may want to read:

How To Turn Off A Wall Heater

Heater Or AC: Which Uses More Electricity?

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