How Many Btus Do I Need For A 3 Car Garage?

by | Last updated on January 24, 2024

, , , ,

A basic rule of thumb for forced-air heaters is 45,000 Btu to heat a two- to 2-1/2 car garage, and a 60,000 Btu garage heater for a three-car garage. The makers of low-intensity infrared tube heaters say that 30,000 Btu can heat a two to 2-1/2 car garage, and suggest

50,000

for a three-car garage.

How many BTUs do I need to heat my garage?

To heat an average two car garage, you’ll need a garage heater that is capable of heating roughly 6,000 – 9,000 cubic feet of air. We recommend getting a

30,000 – 50,000 BTU

garage heater to get your two car garage to a comfortable temperature.

How many BTUs do I need for a 4 car garage?

Size Of Garage: Warm Climate (30 BTU per sq ft): Average Climate (45 BTU per sq ft): 2-Car Garage (500 sq ft): 15,000 BTU 22,500 BTU 3-Car Garage (750 sq ft): 22,500 BTU 33,750 BTU 4-Car Garage (1,000 sq ft):

30,000 BTU


45,000 BTU

How do you heat a 3 car garage?

  1. Install Better Insulation. The Cheapest Way to Heat Your Garage. …
  2. Hook Up an Electric Space Heater. The Simplest Way to Heat a Garage. …
  3. Fire Up a Combustion Space Heater. …
  4. Install a Ductless Mini-Split System. …
  5. Add Radiant Heating.

What size heater do I need for my garage?

The simplest way is to follow the rule of

10 watts per square foot of floor space

. A 22 ft. x 24 ft. garage has 528 square feet, so the easiest way to estimate the required wattage is to multiply by ten.

How many BTUs do I need to heat a 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 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.

How many sq feet will 24000 Btu cool?

A 24,000 BTU air conditioner would work best in a room between

1,400 and 1,500 square feet

.

How many BTU do I need for a 20×20 room?

Room/Area Size: Examples: Recommended BTU: 100-200 sq ft 10×12-10×20, 12×15, 14×14 rooms 6,000 BTU 200-300 sq ft 10×20-15×20 rooms, efficiency apartment 8,000 BTU 300-400 sq ft 15×20-20×20 rooms, studio apartment

10,000 BTU
400-500 sq ft 20×20-20×25 rooms, 1-bedroom apartment 12,000 BTU

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

If you have a typical two-car garage, it should measure somewhere around 20 feet wide by 20 feet deep. A 400-square-foot space like this requires a

9,000 to 10,000 BTU air

conditioner, according to Energy Star.

Are garage heaters worth it?

All in all, if you use your garage for anything other than parking your car or storage space

and spend any length of time inside, heating it is well worth it

. If your garage is not insulated, any heat you supply it with may largely be lost either out the door, through the walls or out the roof.

Can I put a mini split in my garage?

If your home has a multi-zone mini split system already, you can

add on another indoor unit for the garage

, depending on your system’s capabilities. Garages are designed to house one, two, or three cars. One-car garages are the smallest and the average size is 12 ft.

Will a 1500 watt heater heat a garage?

Watts. … Therefore, a 1500 watt space heater (120 volts) can

heat an area of 150 square feet

, and a garage heater rated at 5,000 watts should be able to comfortably heat an area over 400 square feet.

How many watts does it take to heat a 2 car garage?

Garage Size Power in Watts Power in BTUs 440 sq ft (22×20 2 car garage)

4,400 W


15,000 BTU
620 sq ft (31×20 3 car garage) 6,200 W 21,200 BTU 800 sq ft (40×20 4 car garage) 8,000 W 27,300 BTU 1000 sq ft 10,000 W 34,100 BTU

Can a garage heater be too big?

A garage 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.

How do I calculate what size heater I need?

  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.
David Martineau
Author
David Martineau
David is an interior designer and home improvement expert. With a degree in architecture, David has worked on various renovation projects and has written for several home and garden publications. David's expertise in decorating, renovation, and repair will help you create your dream home.