Posted on: November 24, 2016
By: Alan O'Neill
Posted in: Air Conditioning
Many people mistakenly assume that the frigid refrigerant circulating through the evaporator coil adds coolness to the air in your home. Actually, it extracts heat energy. After the heat energy is removed from the air, coolness is just what’s left behind. Anything that interferes with the transfer of heat from the air to the refrigerant, such as a layer of dust or dirt on the coil surfaces.
This video shows Air Conditioner Evaporator Coil cleaning.
In these systems, the refrigerant becomes a liquid when compressed and evaporates when released from the pressure. Your evaporator coil releases pressure from the refrigerant allowing it to evaporate. This is when the gas that is released gets really cold and absorbs the heat coming from your return ducts. After the gas gets warmer, it gets sent to the condenser coils where it releases the heat to the air outside.
After releasing the captured heat from the home outdoors, the cooled liquid travels back to the indoor unit, where the process begins all over again. So what exactly happens? The heat from your home gets captured by the evaporator coils inside and then gets distributed outdoors.
Since the evaporator coil is installed directly in the airstream of your system, it’s a magnet for accumulation of dust or other contaminants. An annual inspection of the evaporator coil is critical. The external surfaces of the evaporator coil that face the airflow in the duct are accessible and cleaning is generally within the skill level of most do-it-yourselfers. However, if dust or dirt contamination is so extensive that the inside coil surfaces are affected, too, schedule a more extensive, heavy-duty cleaning procedure with your HVAC contractor. Here’s a basic primer on how to clean air conditioner evaporator coils.
The evaporator coil works by drawing hot air over the coil, which is filled with refrigerant, to cool the air. Once air has passed over the evaporator coil, a fan is used to circulate the cooled air throughout the house. The evaporator coil is located inside the house. Call (713) 812-7070 us for your home service and repair needs.
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