Q-What is the Evaporator or “A” Coil - Weather Engineers Inc.

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Q-What is the Evaporator or “A” Coil


A- It is the coil that is installed on the supply air side of the furnace or air handler. In most models the coil is built in the form of the capital letter ’A”. Its function is to change the Freon from a liquid to a gas causing a cooling effect. This coil becomes very cold and as the warmer air from the home blows over it, the air becomes cooled and water in the air is removed.