Their is following reasons .....
Dirty Evaporator CoilsIs you know that mold and mildew build up in the evaporator coil and can trigger that bad smell in your air conditioning unit?🤔 When dust or dirt combined with condensation (cold air) it breeds mold and bacteria into play. Signs of dirty evaporator coils include ice formation, weak air flow, evident buildup of mildew and more. You will need the help of the professionals to clean the evaporator coil because it sometimes requires disassembly.
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