Identifying the Right Size of Garage Heater for You


Identifying the Right Size of Garage Heater for You

Once you have decided to get a heater for your garage, getting the right type of heater is the next thing. This part can be difficult as there are several heaters to choose from. Each one has a set of specifications that you need to know before deciding to buy one.

There are different factors to take into consideration when buying a garage heater such as the climate, your ideal room temperature while working in the garage, and your budget. Another factor that you need to consider is size. You must get the size of your garage to determine the right size of heater that you need to warm your garage.

Heaters are typically measured in BTU or British Thermal Units. The higher the BTU is, the more heat the unit will provide. Getting a garage heater with the appropriate size will let you maximize its performance. Using a heater that does not have the correct size will just consume more energy and this will certainly result in more energy expenses on the part of the homeowner. Luckily, getting the size of a garage heater is simple.

Below are the details for your reference.

1.  BTU

There are two kinds of garage heaters and each one uses a different unit of measurement. One of its types is a gas heater, which is measured using BTU or British Thermal Unit. A BTU value indicates the amount or extent of energy needed to heat water measuring about 1 cubic foot by one degree. To convert BTU to watts, use this formula: BTU/3.41 = watts

2.  Watts

The other type of garage heater is an electric heater. Its heat is measured in watts. Watt is a unit of measurement of power, which is expressed as one joule for every second. One watt is just about 3.41 British Thermal Unit. To convert watts to BTU, use this formula:watts * 3.41 = BTU

3.  Size of a garage heater unit

The easiest way to get the estimated size of a garage heater is to follow a simple rule. The recommendation is to have 10 watts for every square foot of the area. Hence, if your total garage size is 24 feet by 24 feet, then it is equivalent to 528 square feet. With that measurement, you can conclude that you would need a garage heater that has about 5,280 Watts. This total watt capacity requirement is derived by multiplying 528 square feet by 10 (the recommended watts per square foot).

4.  Temperature rise

This one is referring to the difference between the outside temperature and the temperature you desire inside the garage. If 50°F is the normal temperature outside of your garage and you want to heat the area up to 70°F, then the total temperature rise is 20°F or 70° minus 50°.

5.  Insulation

Insulation is another important factor to consider in determining the right size of your garage heater. To get the level of insulation in a garage, checking its R-value is needed. R-value is known as the degree of thermal resistance in a certain area. It indicates how well an area or its materials can trap or retain heat. Great insulators are materials that have a high R-value. The opposite or those with low R-value have a very low insulation quality. The degree of insulation your garage needs would depend on your location or where you reside. For areas in cold climates, the recommended R-value is high or between 18 and 27, while those in areas with warm temperature only require low R-value or from 13 to 15.

6.  Volume

This is also a factor to consider before buying a garage heater. Get the volume of the garage by getting its length and multiplying it by its width and then by its height. As an example, 24 feet by 24 feet garage with a ceiling measuring up to 8 feet has a total volume of 4,608 feet.

Final Calculation

As soon as you have gathered all the details, multiply them and divide by 1.6 to get the required level of BTU to heat your entire garage area. This will allow you to get a heater that is appropriate for the size of your garage.

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