Experts in advanced refrigeration and air-conditioning


What is BTU?

The term British Thermal Unit, more commonly known as BTU, can be a confusing one, especially for people residing in non-English-speaking countries. Widely used in the UK, the U.S., Canada, as well as throughout Asia, this measurement unit of thermal energy is most often used to refer to the capacity of air conditioning systems.

One BTU relates to the supply of heat that’s required to step up the temperature of a pound of water by 1° F. In the metric system, the calorie could be considered the equivalent of the BTU. In other words, the calorie represents the energy needed to raise the temperature of one milliliter of water by one degree Celsius. Therefore, the difference between BTU and calories is, simply put, the system of measurement they operate in.

How many BTU do I need?

You probably know that air conditioners come in different sizes, but how do you determine the adequate size for your home? Most people believe the bigger the model, the better, but in fact, an AC system that’s too big can be just as inefficient as one that’s too small, and besides, it will cost more in the long run.

In order to figure out how many BTU you need for your AC system, start by measuring the surface area of the living spaces you want to cool down. In general, 20 BTUs are recommended per square foot of surface area. This means, for example, that if a room measures 450 squared feet, you’d need a 9,000 BTU unit.

How many BTU in a KW (kilowatt)?

To convert BTU to Watts, the equation is quite simple. All you have to do is divide the number of BTU by 3.41. Similarly, to go from Watts to BTU, simply multiply the number of Watts by 3.41.

How many BTU boiler do I need?

On the other hand, how do we determine the adequate amount of BTU for a boiler? This will depend on the type of climate you live in. Approximately, about 50 BTU per square foot of interior space in a cold climate will be needed for efficient heating. If you live in a moderate climate, this will be about 35 BTU, while, naturally, 20 BTU per square foot of surface area should be more than enough in hotter climates.

How many watts does a 5000 BTU AC use?

The choice of an AC system depends mostly on the amount of BTU and room size. Accordingly, it is also of the utmost importance to consider the energy cost that a particular unit will imply within your energy bills. Therefore, we suggest you always take into account know how many watts your air conditioner will use. Approximately, a 5,000 BTU AC unit will require about 500W of electricity when operating at full capacity. Therefore, when purchasing an AC unit, make sure to check its Watts specifications. Another useful way of estimating the energy cost of a particular unit is to divide the BTU number by 10. The result will give you an accurate estimate of the number of Watts the unit will use.


How many BTU per square foot cooling?

Air conditioning systems come in different shapes and sizes, and figuring out the best unit for your home or office can be a complex task. In order to find the most efficient AC unit for the space you wish to cool down, the first thing you need to do is measure its surface area. We generally recommend 20 BTUs per square foot of surface area. For instance, if a room measures 450 squared feet, you’d need a 9,000 BTU unit. In other words, all you have to do is multiply the surface area in square feet by 20 BTU in order to find an accurate estimate.


Condensing unit classification by BTU

The function of a condensing unit is to cool down and compress a refrigerant gas into its liquid state, which is then pumped through the system by means of coils in order to keep the system cold. In other words, condensing units are the devices that control the temperature in cooling systems such as air conditioners and refrigerators, as well as in heat pumps. Naturally, condensing units come in different shapes and sizes depending on their capacity. When choosing a condensing unit, it is of the utmost importance to take notice on its BTU per hour capacity. The higher the BTU/h, the bigger power output of the cooling system will be.

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