During the rainy season, air conditioners in many homes start giving off a bad smell. But what causes this, and how can you prevent it?
Bad odor from an AC is a common issue during the monsoon, mainly due to humidity, fungal growth, bacteria, and lack of proper cleaning.
Humidity levels rise significantly during the rainy season. This moisture collects inside the AC unit—especially on the evaporator coil, in the drain pan, and inside the air ducts. As a result, mold and bacteria begin to grow, which leads to a foul smell.
If your AC hasn’t been serviced in a long time, dust and moisture build up inside, creating the perfect environment for bacteria. When the filter, cooling coil, and drain pipe are dirty, the smell becomes even worse.
Another common reason is a clogged drain pipe. If the pipe that removes moisture from the AC is blocked, water accumulates inside the unit. This stagnant water begins to rot, producing a strong unpleasant odor.
Regular cleaning and timely servicing of your AC can help prevent this issue and save you the cost of calling a technician during every rainy season.