Things to know about air conditioners

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Air conditioners have been an important part of our lives since global warming increased. It is as important as a phone in computers. We use them in our day-to-day life to keep us comfortable but when it comes to buying a repairing air conditioner we know very little about them. Here is a list of things you should know.


Air conditioners work on simple phenomena of physics and also on Boyl’s law. You cannot create cold but you can remove heat in the former energy. When ice absorbs heat it gives a cooling sensation because of the absence of heat. According to Boyl’s law, gases get hotter in compression. This means in order to create cold heat it is required to go out somewhere. 

In an air conditioner, there are three components: air compressor, evaporator and condenser. If we go through physics then the compressor pressurized refrigerant fluid that runs across the conditioner. With pressure, the refrigerant starts to heat up and through the energy from the room the hot fluid pumps back into the conditioner and then into a condenser. The fluid flows through a long set of coils to depressurise fluid and it gets cold. The heat produced is released by the conditioner and the evaporator flow cool air inside the room. Along with cool air, the evaporator also releases some water.

What is Ton?

In earlier times the air conditioner was done using big blocks of ice. When the cooling system was invented they checked the capacity of the air conditioner by the amount of ice melted, which is known as a ton. Later it became a measurement of the size of the air conditioner. 

Capacity and room size

This is one of the common mistakes people make when they choose AC. The capacity of the air conditioner depends on the size of the room. For a 10 to 120 square feet of room, a one-ton AC is a sufficient while in a bigger room 1.5 ton or 2-ton unit. Apart from room size, one should choose AC capacity according to the floor and the amount of sunlight in the room. The top 5 floors should increase their capacity by 0.5 tons for effective cooling even if they face more sunlight.

Filters and their function

Every air conditioner system has an upstream filter for the evaporator coil. They are like a fuzzy-looking or folded field of paper in ducts. They remove particles in the air stream to keep the system clean. A dirty filter will allow the downstream flow particles which make air flow dirty.


There are a lot of options with several features available in the market but choosing an air conditioners is difficult. Make sure that the AC is up to your requirements and has all the additional features. If you know the workings you can easily detect the right AC for your personal and corporate needs.