Cabin Air Filters, a breath of fresh air

Check your owner’s manual to see if your car has a cabin air filter. If the answer is yes you may want to make a note to check with your service professional to see if it should be replaced. This is especially true if you suffer from asthma, allergies or live in a dry and dusty environment. There are two basic types of cabin air filters 1. The more popular particulate type, which is designed to remove particles above a certain size. 2. The dual-function which has an activated charcoal layer on one side to trap odors. The so-called particulate filter, which is the less-expensive type, is not just for large airborne debris. It traps dust and pollen, two very common allergens that are very small particles, so it has a significant effect on passenger comfort. The activated charcoal layer/section is added to the particulate filter to absorb order. The manufacturers of the premium filters actually test their products using panels of people with a great sense of smell. Odor control filtration is a complex science involving a lot of trial-and-error. So you should appreciate that an effective filter is a good piece of engineering. A dusty note from the field MACS member service shop Marks Air in Tampa, Florida sent us a photo of a cabin air filter that had more than served its purpose. This particular cabin air filter came from a Volvo class 8 truck and it hadn’t been changed for three years! It was retired in favor of a replacement. We wanted to share this photo with you to show you how cabin air filters do their job. Remember to have your vehicle’s cabin air filter checked and see if after this hot summer you need a new one. When having your mobile A/C system professionally serviced, insist on proper repair procedures and quality replacement parts. Insist on recovery and recycling so that refrigerant can be reused and not released into the atmosphere. You can E-mail us at [email protected] or visit to find a Mobile Air Conditioning Society repair shop in your area. Visit to find out more about your car’s mobile A/C and engine cooling system. Thanks to Mobile Air Conditioning Society member Gordon Marks at Marks Air, Tampa, Florida for this photo and information. Marks Air has been a member of MACS for 27 years!

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