# Quick Answer: What Size Heater Do I Need?

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

What Size Heater

1. Multiply the length times the width times the height to calculate the volume in cubic feet.
2. Multiply the room’s cubic footage by 4 if its walls contain fewer than 3 inches of insulation.

## What size room will a 1500 watt heater 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.

## What size room will a 5000 BTU heater heat?

“5000 BTU air conditioner can cool a 100 to 150 sq ft room.” Energy Star guidelines for 5000 BTU AC room sizing also recommends that you: Increase capacity for a room with high sun exposure; +10% cooling output.

## How many square feet will 40000 Btu heat?

To heat a 2,000 square foot home, you will need approximately 40,000 BTU’s of heating power.

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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 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.

## How many BTU do I need to heat a 20×20 room?

To determine the number of BTUs per square foot that you need to heat a room, simply multiply the square footage by 20 BTUs per square foot. For example, if a room has 1,000 square feet, you would require 20,000 BTUs to heat it.

## How many square feet will a 30000 BTU gas heater heat?

Heater 30,000 BTU Vent Free Blue Flame Natural Gas Heater ( 1000 sq. ft. Range) with Blower Fan Kit: Patio, Lawn & Garden.

## 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.

## Do all 1500 watt heaters put out the same amount of heat?

An electric space heater rated at 1,500 watts will put out the same amount of heat regardless what you pay for it. If you do use a space heater, be sure to: • Keep the heater at least 3 feet from flammable items such as curtains and furniture.

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## Does higher watts mean more heat?

With our products, heat output is measured in wattage. That doesn’t necessarily mean more is better. Just because you can get a 2,000-watt heater for the same price as a 750-watt one, doesn’t mean you should. Too much heat for the room will cause the heater to fail.

## Is 5000 BTU enough for a bedroom?

A 5000 BTU air conditioner is suitable for cooling a room that’s 100-150 sq. If placed in a bigger room, it will result in energy inefficiency because the AC will run for longer to cool the room. On the upper scale, a 12,000 BTU AC is good for a 450-550 sq. ft room.

## Is 400 sq ft small?

How big is a 400-square-foot apartment? Four-hundred square feet is about the size of a two-car garage. It’s not a huge apartment, but it’ll get the job done. After all, two cars take up a lot of space and you won’t actually have two cars parked in your house — the furniture you have will be much smaller!