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What is the optimal cooling capacity of your unit?

When deciding how powerful your air conditioner should be, the surface area of your room is often a decisive factor. But apart from floor space, there are many other things you should consider when determining the right capacity for your air conditioner and to choose the right unit for your home or building.

Which factors affect the capacity of your air conditioner?

When choosing an air conditioning system, it is important to determine the required cooling capacity. A system with too little capacity can offer disappointing results, while a system that is overqualified often consumes too much energy for the job at hand. Figuring out the perfect capacity is a balancing act – because in addition to the surface area of the room, there are other important factors that influence the room temperature.


The degree of insulation of the room is especially important. New residential buildings are often insulated so well that they only need extra cooling.


Number of people

People generate about 120W/h of heat. So the number of people using the space has an impact on the temperature. Both at home and in the office.


Personal preference

And maybe even most importantly, the ideal temperature differs from person to person: some like it cool, while others like it hot – or something in between.



All of these factors need to be taken into account when choosing the right capacity for your air conditioner.

Solar infiltration

In recent years, large areas of glass are being used more frequently in new buildings. Even with solar protective glazing, temperatures rise when the sun shines in.


Electrical devices

We have an increasing number of electrical appliances in our homes and offices. Computers, printers and photocopiers are all present in modern life and they generate a large heat load. Lighting too gives off a lot of heat.


Two people enjoying their Daikin air conditioner

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