How to Address Foul Odours Coming from Your Mission AC System

During the warmer months in Mission, your AC system plays a big role in keeping your home comfortable But when that cool air starts to carry an unpleasant smell, it can quickly turn a soothing space into a place you want to avoid Foul odours coming from your AC are not just annoying They can also point to more serious issues hiding within your system Addressing smells early can help prevent bigger problems down the line, including possible damage to the unit or risks to your indoor air quality.

If you're noticing musty, sour, or even rotten smells coming from your vents when the AC runs, it's a sign something is wrong These unpleasant odours tend to get worse the longer they are left alone Whether it’s coming from a clogged air filter, a dirty evaporator coil, or something more concerning, recognizing and dealing with the source quickly is important Here's how you can identify what’s causing those foul smells and what actions should be taken to fix them.

Identifying the Source of the Odour

The first step in solving any AC smell issue is figuring out what's creating it Different odours usually mean different causes, and each one may point to an issue in a specific part of your system Here are some of the most common sources of foul odours in residential AC units in Mission homes:

• ‍Mould or Mildew: A damp, musty smell often comes from moisture buildup in the evaporator coil or inside the ductwork