Calculate BTU: Heating the Garage Efficiently

Calculate BTU: Heating the Garage Efficiently

You not only keep your car in your garage but also like to spend your spare time in it. Besides this, your car should be always ready to start without any frozen engine or other winter problems. That’s why the atmosphere in the garage should be comfortable throughout the year.

Commonly, people using forced-air garage heaters or low-intensity infrared heaters. Still, before choosing the best garage heater you should calculate BTU to your car shedder. Otherwise, you may be frozen with a too small one or to burn your money if you buy a too big heater. You can find the key to the problem by fitting a proper heater in your case.

The best BTUs level to your garage

While go shopping you can see how many BTUs to heat a garage at labels depend on the heater type. This parameter is always marked by the manufactures at the heater’s trademarks. So if you have a 1 car you need 22,500 BTU for a forced-air heater and 15,000 BTU for a low-intensity infrared tube. Generally, the BTU figure for the average garage ranges from 30 to 60 BTUs per square foot.

How to calculate the BTU?

First a wall you need to find out the next parameters:

  • Garage footage. Multiple the length by the width of the garage to find the square footage and then multiple this data by the ceiling height to get cubic footage. Just bear in view that a required place for parking the one car should be more than 200 square feet.
  • Insulation. The better you fill a crack (hiatus) of your garage the less heat loss you will obtain. Let’s say that very good insulation ranges 0,5; average insulation is 1; little insulation – 1,5 and no insulation equals 5.
  • Temperature rise. You should calculate the difference between your average winter temperature and the comfort temperature in your garage you’d like to have. You can find useful information about winter temperature with the online tools as climate zone map etc.

For example, you have a garage with 20 feet in width and 26 feet in length, so to calculate BTU needed for garage you should multiple these figures and you will obtain 520 square feet. Then you should multiply the result by the ceiling height. Let us suppose that it equals 8 feet as on whole.

Add temperature rise, for instance, the winter temperature is 45 Fahrenheit’s degree and you like that in the garage will be 70 Fahrenheit’s degree, so the deference works out 25 degrees.

The whole calculation looks like this:
(520×8×1×25)/1.6 = 65 000 BTU, where 520 – Square footage; 8 – ceiling’s height; 1 –insulation coefficient; 25 – temperature rise.

Obviously, you can find BTU calculator for garage heater on the Internet or calculate it using our tips. Nevertheless, these calculations will help you to keep your garage cozy and warm in any weather with the right size heater.