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How AC Works? – Simplified

Posted in Air Conditioner

Have you ever wondered how AC works? Well, rather than adding cold, air conditioners more accurately remove heat. Most of the heat is stored in humid air. Air conditioners remove hot humid air and what is left is cool dry air. Two major components work together to make this happen. The A-coil (evaporator) inside your furnace plenum and the condenser unit outside your home.

The Evaporator or A-Coil

The A-coil or evaporator houses refrigerant (cold fluid) inside a copper coil that captures or absorbs heat as warm air from your home blows through it, leaving dryer conditioned air. Just as water absorbs heat from your stove in order to boil (or evaporate) refrigerant absorbs heat from your house. Condensation from this process falls into a tray below and then is piped to the closest floor drain.

Condenser, Fan and Compressor

The outdoor unit is where the heat from inside your home is dispersed. It houses a compressor, condenser coil and a fan. The heat that is absorbed from your home’s air is transferred to the refrigerant and then pumped to the outdoor unit. As this heat is absorbed and moved by the refrigerant to the outdoor coil, it passes through the compressor.

The compressor in your air conditioning system has the primary job of moving the refrigerant throughout the system. This is important as we can then keep reusing the refrigerant to cool our house. The refrigerant is compressed to a higher pressure and moved through the outdoor coil known as the condenser. As the refrigerant passes through the condenser, a fan delivers ambient air across the condenser coil causing it to cool. As the process completes, the heat from inside your house is dispersed to the air outside your house. The refrigerant is then pumped back indoors and the whole process repeats.

This is a simplified explanation about how AC works. If you have any questions contact Tyson Leitch at 519 Furnace.

How AC Works
Central Air Conditioning and all its parts as a system in a home