Why Do Evaporator Coils Of The Ac Leak?

A leaking evaporator coil is a very common problem in household air conditioner. There are a few reasons for leaks. Let’stake a look at them.

• The evaporator coil is present inside the house, adjacent to the furnace or air handler. Through these coils cold refrigerant circulates. The hot room air sucked in though the ducts are blown over these coils. The cold refrigerant absorbs heat of the air and makes it cool. The cool air is again recirculated through the ducts to cool the rooms. Sometimes tiny pinhole leaks (officially called for miscarry tunnelling corrosion) are found in these evaporator coils. These are caused by acids that are formed by a reaction between moisture and VOCs in your home’s air. Now where do the VOCs (volatile organic compounds) come from? Well, you use a variety of chemicals solution such as cleansers, aerosols, scented air fresheners, adhesives, which are part of day to day requirements. These chemical solutions release VOCs. It is very hard detect these ant tunnels. However, they are both bad for the health of the A/c as well as for people living in tea house. If you have them in your copper coil you should replace them before long. When you replace the indoor coil you should also replace the compressor coil, so that both are compatible with the latest refrigerant, R-410A.

• The tubes that conduct refrigerant back and forth the evaporator coil and condenser unit are made of copper tubing with brazed joints and screw-type connections. Any faulty welds or loose can cause leakage.

• A leaky evaporator coil can also result due to wear and tear of your HVAC after years of use. The copper tubing inside the coil degrades.

Steps to prevent leakages in evaporator coil:
• Cut down the usage of volatile organic compounds (VOCs) in your home.
• In case you must use some of them, ensure there is adequate flow of fresh air inside the house.
• Use an air purifier that neutralizes the effect of VOCs with ultraviolet light.
• Use a whole-house dehumidifier to reduce the moisture content of the indoor air.
• Clean you evaporator coils regularly during HVAC preventive maintenance.





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