Having a clean and functioning microfilter in your BMW is extremely important as it promotes clean air circulation throughout the cabin while running your Air Conditioner or heater.

The microfilter is aptly named, as it is sufficiently dense to catch more than just large leaves, twigs and bugs. The before/after shot below demonstrates how well it does its job. For this reason, if left installed beyond its recommended replacement interval it can contribute to odd smells in the interior, and if left in place beyond all reason, it can clog and thereby reduce the effectiveness of the car's HVAC system. BMW recommends it be replaced at intervals of 15K miles.

One danger of an old filter is that once clogged, the interior fan will have a difficult time pulling air into the car. Old microfilters can also produce a musty smell while the Air Conditioning is on.

If you are experiencing the odors mentioned above, we offer an Air Conditioning Deodorize Service, which eliminates airborne allergens such as mildew, mold and bacteria that come from your Air Conditioning vents.

Stop in to the Shelly BMW Service Department today to have your microfilter inspected. You can schedule your appointment below.