Why does my AC smell bad?

A musty or mildew smell almost always means moisture buildup in the coil or drain pan — common in humid climates and usually fixed by cleaning or servicing, not a sign of danger. A persistent burning smell is different and genuinely more serious — turn the unit off and call a technician rather than continuing to run it, since that points to a possible electrical issue.

📐 Calculated estimate Based on real BEE-certified data — see the exact numbers below.

The distinction between these two smells matters more than people realize — musty odor is an air-quality nuisance you can address with routine cleaning (Dew Clean, where the model has it, specifically helps prevent this buildup), while a burning smell is a genuine safety signal your AC shouldn't be running until it's been checked. Don't treat a burning smell the same way you'd treat a musty one — one is a maintenance issue, the other isn't something to wait on.