How many BTU Need to Heat Garage

How many BTU Need to Heat Garage

Do you know which size heater is needed to heat your home or garage? Most people think it is very easy to determine. But it is not so easy. For this, you have to dive into spatial geometry, energy science, climate, and construction technology. And so, how much BTU need for your house or the garage you need to determine skillfully.

In other words, one BTU is a pound of water temperature to increase one degree Fahrenheit. And thus, you have to evaluate the suitable BTU. But determining this BTU is not easy.

So, I will describe how many BTUs need to heat the garage through the article. After reading this article, you can easily calculate your garage heaters’ BTUs. So, don’t waste your time. Let’s start our journey:

What are BTUs?

BTU strand for British thermal unit. To clarify, one BTU is a pound of water temperature to increase the temperature of one degree Fahrenheit according to need. But the garage heater is warming the wind of your garage. So, it does not heat the water. However, this BTU is a standard way to know about the heating capacities of one unit measurement.

Moreover, you can easily compare the effectiveness of different heaters through BTU. It also helps you to make a decision. Because it quickly finds out the source of energy. Besides, BTU is also used on the air conditioner. It determines how much heat can remove it.

How Many BTUs Are Needed to Heat Your Garage

Now, you can learn how many BTUs need to heat the garage. Also, how many watts need to heat your garage? You can also know how much you want to add or remove air in your garage.

It depends on square footage and other things like climate. But at the beginning, you have to determine how much temperature to move inside. And how much BTU needs to do this work. However, there are calculators to determine the actual unit, which you can accurately calculate. You can also follow the rules of thumb.

Let’s explain the calculation with an example. If you want to maintain a comfortable target in 300 square feet, 7000 BTU is compulsory. Similarly, at least 20000 BTU need in a 1000 square feet room.

There are some garage heaters where they have heat power in their watts. So, it can use it to convert watts to BTU. Besides, one Watt is about 3.41 BTUs per hour. And every Watt is 0.29 BTU. So, you have to multiply the BTUs by 0.92. Then, you can find the members of Watt that you need.

Moreover, the amount of electricity is used in watts. And that’s why you must add every hour to convert from the BTU unit to Watt. So, the more power warm-up for the same time, It will emit more energy.

How many BTUs are needed? You can easily find every hour from an online converter. However, I am giving a formula. Your work will be more accessible through this formula.

The formula is: The desired temperature changed x Cubic feet of space = BTUs need per hour.

There are also related things like garage length, garage weight, garage height, climate, home insulation. 

Also Read:

What Factors can Impact your Heating Needs

You cannot measure BTU like your own mind. But, here are some essential factors that are very important for heating. So, you cannot determine BTU excluding them. However, these issues come automatically during determining BTU. But it would be great if you had a good idea about them. So, let’s check these factors. 

1. Climate and Weather

Climate plays a vital role in energy. Because BTU depends on the weather. If I mention the United States, there is a 30-40 BTU every square in zones 1 and 2. And zones 3 and 4 are 40-45 in every square.

Suppose you can know the BTU zone in the place where you are now. Then, you can quickly determine its amount according to the weather. That’s why the climate is tiring. But, unfortunately, you cannot avoid the weather.

2. Average Square and Cubic Footage

This average square and cubic feet are significant to determine power. It also changed the amount of BTU. For a prominent place, you have to buy a large heater. Which heater air is capable of reaching everywhere?

In other words, the heater and BTU require more than 20,000 sq. ft. rather than 1000 sq. ft. So, when measuring BTU, take a look at your Average Square and cubic footage. Otherwise, you cannot get an actual result.

3. Building material and quality

Quality and components of the building directly affect this count. Also, the age of the house is one of the critical factors. Besides, the heating machine creates problems in the old building. Many times the wall is worse than the wind gets out and creates problems on the machine.

It may also cause problems in new buildings. If there is not good material in the new building, it won’t be any profit. So, take a look at how your home is appropriately before measuring the heat.

Steps to Choosing the Right Sized Heater

It would be great if you chose the right sized heater. That’s why you have to maintain some steps. So, let’s discuss these steps:

1. Square Footage

Now, it’s time to measure your tap. You have to find out the length and width. So, find out your garage square footage size.

2. Ceiling Height

Count Cubic feet in your garage to find a more accurate measurement of your garage. Since the heat increases, so the place of the ceiling is essential.

3. Insulation

Insulation is essential for reducing heat loss. Many garages have holes. By which the cold air quickly enters. So, you can buy a door insulation kit. Then, you can resolve the insulation method.

4. Climate Zone

Where do you live, and where is the winter temperature? If you live in an icy place, take a big heater. The small heater is inappropriate here.

5. Temperature Zone

Many people want to keep their garage colder. It will also make your workplace. Thus, you must increase your garage heater temperature.

6. Calculate the BTUs

Now, this time to calculate the BTUs. Get of how BTU needs with garage length, width, height, climate, and insulation. You have also got how many watts you need. After getting BTU watt, you can easily understand which size heater is suitable for you.

Garage Heating BTUs Table (With Rough Estimation)

Garage Size (Only Heating Area):Standard Climate (15 °C to 30 °C)Very Cold Climate (-10°C to 10°C)Very Hot Climate((30°C to 40°C or above)
500 square feet22,500 BTU30,000 BTU15,000 BTU
1,000 square feet45,000 BTU60,000 BTU30,000 BTU
1,500 square feet67,500 BTU90,000 BTU45,000 BTU
2,000 square feet90,000 BTU120,000 BTU60,000 BTU
2,500 square feet112,500 BTU150,000 BTU75,000 BTU
3,000 square feet135,000 BTU180,000 BTU90,000 BTU
3,500 square feet157,500 BTU210,000 BTU105,000 BTU
4,000 square feet180,000 BTU240,000 BTU120,000 BTU
4,500 square feet202,500 BTU270,000 BTU135,000 BTU
5,000 square feet225,000 BTU300,000 BTU150,000 BTU

Area That a Garage Heater of 1,000 – 30,000 BTU Can Heat?

Garage Heaters Heating Output:Square Footage (Standard Climate) (15 °C to 30 °C)Square Footage (Very Cold Climate) (-10°C to 10°C)Square Footage (Very Hot Climate) (30°C to 40°C or above)
1,000 BTU22,2 sq ft16,6 sq ft33,3 sq ft
3,000 BTU66,6 sq ft33,3 sq ft100 sq ft
5,000 BTU111,1 sq ft83,3 sq ft166,6 sq ft
10,000 BTU222,2 sq ft166,6 sq ft333,3 sq ft
15,000 BTU333,3 sq ft250 sq ft500 sq ft
20,000 BTU444,4 sq ft333,3 sq ft666,6 sq ft
25,000 BTU555,5 sq ft416,6 sq ft833,3 sq ft
30,000 BTU666,6 sq ft500 sq ft1000 sq ft

Ending Thoughts

I hope you have read the whole article attentively. Now, you can determine how many BTUs need to heat the garage. However, it’s a little complicated to find out. But not impossible. You can quickly determine it with the BTU calculator online by knowing all your information. It is essential to find BTU per hour.

Moreover, if you read the whole article, you have no problem. Here, you know the proper step to choose the right size heater. Also, see the factor that can impact heating. So, measure the BTU and buy your garage heater