Service and Repairs – A/C Cabin Air filters

Filters protect your car from harmful debris that can cause damage to internal moving parts. The engine, and transmission need service regularly to keep them alive and happy. So what about you, the driver? Back in the mid 80’s some European car manufactures started adding air filters to the A/C system. Mercedes-Benz called it a particulate filter and it protected the A/C evaporator core from getting contaminated with hair, lint, leaves, and other nasty things that could get pulled into the air intake of the A/C system. It also protected the inside of the car from dust and oder. Most of all, the clean air was a benefit to the driver. European cars started using “Cabin Air Filters” first, around the mid 80’s. In the late 90’s I started to see them in high-end Japanese cars, and by the mid 2000’s almost all cars had some type of Air Filter added to the A/C system. The filter works great till, till it looks like the one in the picture. A filter can only do its job if it can catch and hold the dirt. This filter is past its way past its prime. looking at it, you might think it’s very old, but it’s only 3 years old, but the car is only used in town and in 3 years has only driven 7,000 miles.

Most car manufactures today list a 1 year or 15,000 mile interval for A/C Cabin Filters. Many car owners do not follow the recommended filter intervals. It’s hard enough to get clients to do regular oil changes much less service the A/C filter on schedule.

I have removed filters that had so much junk in them that they have collapsed in-ward and the A/C system is trying to suck them into the air intake. Blower motor failures can occur due to a plugged Cabin Air Filter. Low duct air flow can happen due to a dirty filter. Poor cooling and compressor failure can also occur because the filter is plugged up with dirt.

The filter to the right is from a Toyota. The owner did not know that the car had a filter. It was an original filter. This filter is only 2 years old, and is nasty! The air flow from the duct was almost nothing, even on a high-speed. Changing the filters and servicing your car regularly is part of owning a car. Planning for repairs and preventative maintenance keeps your car happy and reliable. No one likes to tow their car to a repair shop, much less shell out money to repair something major, when you could have prevented the break down all together with a well visit to the car doctor.

It’s all good under the hood. HeyAnthonyAz.com