# What Size Electric Heater Do I Need?

## How do I calculate what size heater I need?

To calculate the size unit heater required for your space, use the following formula: Calculate the cubic footage of the space to be heated by multiplying building length x width x ceiling height. A 30 x 40 pole barn with 14 foot average ceilings* will have (30x40x14=) 16,800 cubic feet of space to heat.

## How do you size an electric heater?

A very simple method for determining how much total heating wattage you need can be found by calculating the square footage of the room, then multiplying this by 10 watts to produce a baseline wattage requirement. For example, if you are heating a 12-foot x 12-foot bedroom, it will have 144 square feet.

## How many square feet will a 5000 watt electric heater heat?

A 1500 watt space heater can heat an area of 150 square feet, and a 5000 watt garage heater can comfortably heat an area of 400 square feet.

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## How many watts do I need to heat a room?

TWO USEFUL FORMULAS Wattage: Multiply the area in feet by 10. For a room 20 feet by 20 feet, we obtain 400 sq. ft., multiplied by 10 to give 4000 watts. The number of watts = area x 10.

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

A common wattage for space heaters is 1,500 watts. Apply the formula 1,500 x 24 ÷ 1,000 x \$0.20 to determine the cost to run the space heater for a day. (Dividing by 1,000 changes watt hours to kilowatt hours.) In this case, it will cost \$7.20 if it was running for 24 hours straight.

## What is the best type of electric heater?

Best Electric Heaters

• Dyson AM09 Hot + Cool Fan Heater.
• Dimplex DXSTG25 Heater.
• Warmlite Portable Electric Oil Filled Radiator.
• Duronic Convector Heater.
• De’Longhi HS20/2 Convector Heater.
• Igenix IG9514 Portable Upright 3 Bar Halogen Electric Heater.
• Dimplex CDE2Ti 2KW Electric Oil Free Radiator.

## How big a room will a 2KW heater heat?

For ease of calculation let’s call it 20m². This means that if it is a living area you will need 2kw to heat it. If it is a bedroom; 1.5kw will probably be sufficient.

## What is the difference between 2kW and 3kW heater?

The 2kW and 3kW under-sink models have capacities of 10 and 15 litres, while the 3kW over-sink units are available with capacities of 10, 15 and 30 litres. (Note: These capacities refer to the volume of cold water each unit holds; the volume of hot water delivered may be slightly less.)

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## Do oil filled heaters use a lot of electricity?

An oil heater’s radiator-like construction maximizes heat exchange with the air. Of course, the oil also radiates heat, but it does so at a slower rate. The heating element consumes as much electricity as that of any resistive heater when it’s on, but thanks to the heat sink created by the oil, that isn’t all the time.

## What is the best electric heaters for large rooms?

Top 8 Space Heater for Large Room Reviews 2021

• Best Large Room Space Heaters & Reviews.
• #1 AmazonBasics Portable Space Heater 1500W.
• #2 Cadet Com-Pak Twin 4000W Wall Heater with Thermostat.
• #3 Comfort Zone Oscillating Space Heater Tower with Remote Control.
• #4 Pro Breeze 1500W Mini Ceramic Space Heater.

## What is the highest watt electric heater?

The highest BTU space heater tops out at 5,120 BTUs, as the highest wattage space heater is only 1,500-watts.

## How many square feet will 1500 watts heat?

A 1,500 watt heater producing 5,100 BTUs can heat 150 square feet. That’s equivalent to a 10-by-15 foot room, an 11-by-14 or one sized to 12-by-12 1/2 feet with a standard 8-foot ceiling.

## How many BTUs do I need to heat my 24×24 garage?

There is a basic rule of thumb for forced-air heaters, which is to heat a two- to 2-1/2 car garage and a three-car garage with 60,000 Btu.