How many BTU per hour is a 1500 watt heater?

Author: Alexanne Torp  |  Last update: Thursday, July 3, 2025

You get about 3.4 BTU/hr for each watt/hr. So if you connect this through a power meter and it says 1500 watts, you are getting 1500 x 3.4 = 5100 BTU/hr of heat.

How many BTUs does a 1500 watt heater produce?

When determining the BTU's provided by any electrical heating source, simply multiply the watts by 3.413 and the resulting number is the BTU's. In our case 1500 watts x 3.413 = 5119 BTU's. Most manufacturers of 1500 watt heaters generally say they provide 5120 BTUH's or British Thermal Units per Hour.

Is it cheaper to run a space heater or a heat pump?

Because the heat pump is so much more efficient, it's going to cut our electric consumption to one fourth of the cost to produce the same heat as those portable heaters. Maybe an easier way to understand this is to look at your electric bill.

How big of a room will a 1500 watt heater heat?

In other words, a 1,500-watt heater will be great for a 250-square-foot room with central heat. If that same room had no other source of heat, you'd need a 2,000-watt heater.

How much does it cost to run a 1500 W heater for 24 hours?

Answer. To calculate the cost of running a 1500-watt heater for 24 hours in the US, you need to know the electricity cost per kilowatt-hour (kWh). If the average cost is about 16 cents per kWh (as of early 2023), the heater uses 1.5 kW x 24 hours = 36 kWh. Therefore, the cost would be 36 kWh x 16 cents = 5,76.

What is the total cost of running a 1500 watt heater for 24 hours?

Is it cheaper to run space heaters or central heat?

But in general, since central heating powered by natural gas is cheaper than heat from electricity, heating a large space will cost less with an HVAC system that runs on gas.

Why are space heaters only 1500W?

Government regulations limit space heater output to 1,500 watts, which is not nearly enough to heat an entire home. In general, one square foot of space requires about 10 watts of electricity to heat, which means that a space heater operating at its maximum output can heat a room no larger than 150 square feet.

What size heater do I need for a 12x12 room?

The first technique is to simply figure the square footage of the space you want to heat. In warmer climates, multiply this number by 10 - 15. In more moderate climates, multiply by 20 - 30. And in cold climates multiply the square foot number by 30 - 40.

How many BTU do I need for a 2 car garage?

For a 2 car garage with 500 sq ft to 700 sq ft, the estimated heater size is 30,000 to 45,000 BTUs. For a 3 car garage with 750 sq ft to 900 sq ft, the estimated heater size is 45,000 to 55,000 BTUs. The height of your ceiling will impact the size of the heating unit you get.

Do plug-in heaters save money?

Savings using a space heater for 8 hours per day

Those with electric heat save less -- about $72 respectively -- and folks with natural gas, which is currently cheap, would pay about $36 more than if they ran a space heater.

What is the most efficient electric room heater?

Reverse cycle split system air conditioners (A.K.A heat pumps) – the most energy efficient electric heater.

Are infrared heaters better than electric heaters?

Zone heating comparison for infrared vs electric heater: Infrared heaters are more effective than electric heaters when it comes to zone heating because infrared directly targets people, objects and surfaces without wasting energy on the surrounding air.

Which heater puts out the most heat?

What type of heater puts out the most heat? The type of heater that puts out the most heat depends on various factors, but generally, infrared heaters (such as the radiant heaters in this article) are known for emitting a significant amount of heat.

How to convert 1500 watts to BTUs?

A MagikFlame has 1500 watts which convert to 5118 BTU per hour. This BTU per hour conversion allows you to move from discussing energy to discussing heat. If you want to do it yourself, multiply your watts by 3.41 to get your BTU/h, or divide your BTU/h by 3.41 to get watts.

Does a 1500 watt heater use a lot of electricity?

On average, space heaters use 1,500 watts of electricity.

Using a space heater 8 hours per day will use about 84 kilowatt-hours of electricity per week. It costs an average of $51.65 to run a space heater for a month and $258.26 to run for a year.

Can a heater be too big for a room?

A heater that is too large for the space will not heat the space more quickly. A heater that is too large for the room will continue to heat for an extended period of time beyond the temperature set point, wasting energy. We call this a temperature swing.

Is it safe to run a space heater 24 hours a day?

You Should Not Leave Space Heaters on Unattended

We do not recommend using space heaters at all because of this risk, but you definitely should not use them at night. If your home is too cold at night, you may want to consider adjusting your thermostat to better meet your needs.

What size room will a 1500 watt heater heat?

As a rule of thumb it will require about 10 watts for every square foot. So the 1500 watt will usually heat up to 150 square feet. Heating question - trying to understand what size heater to ... I am trying to understand in layman terms what this actually ...

What temperature to set thermostat in winter?

If someone is at home in the daytime, 72° F (22° C) is a good start, but aim for 68° F (20° C). If everyone is away from home in the daytime or you're asleep at night, we feel 66° F (19° C) to 62° F (17° C) is best.

What is the cheapest heater to run?

What is the cheapest heater to run? We take a look at the options
  • 1) Halogen heaters. Halogen heaters use halogen gas inside a heating bulb and lamp. ...
  • 2) Oil-filled radiators. Oil-filled radiators work by using electricity to heat oil with an element inside a reservoir. ...
  • 3) Fan heaters.

Are oil-filled heaters efficient?

✓ Oil-filled radiators are incredibly efficient thanks to their heat-retentive thermal fluid, even heat distribution and retention, and in-built energy-saving features.

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