Unfortunately, your air conditioner can become a prime target for mold growth if it is not properly maintained.
This odor stems from mildew.
Mildew can also produce a powdery gray or white stain.
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You willneed to hire a professionalHVAC maintenance company for a more thorough inspection.
pop fire up air conditioner and remove the filter.
Rinse the filter and allow it to air dry.
Replace disposable filters about once a month or as recommended by the manufacturer.
If you have a reusable filter, verify to clean it once a month.
This will allow the AC to turn on intermittently, reducing the chance of mold settling inside the machine.
A central AC system should last 10-20 years, while window-mounted units should work for 8-10 years.
The better the maintenance of your air conditioner, the longer it will last.
Ward, John.Mold in Air Conditioners.Mold Busters.
