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Serving Kent, Issaquah, and surrounding areas

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Kent,WA – (253) 343-0000 | Issaquah, WA – (425) 472-(HVAC) 4822

The Importance of Air Filters

Some sources of indoor air pollution are obvious while others can be more difficult to identify. Building materials, cleaning products, HVAC systems, inadequate ventilation and mold growth are common areas of concern. The majority of homes and businesses in Kent, Issaquah, and surrounding areas face issues that require a proactive approach. One affordable and simple opportunity to make an improvement is regular replacement of air filters.

Filters are designed to catch contaminants such as dust, animal dander, pollen, mites and spores so that they aren’t suspended in the breathing air. After a while, the filter becomes clogged and can no longer provide effective benefits. Even worse, the dirty filter turns into a detriment to the efficient operation of the HVAC system and clean indoor air quality.

Itchy eyes, congestion, difficulty breathing, coughing, sneezing, headaches, sore throat, respiratory infection and aggravated symptoms of allergies and asthma are just a small sample of health concerns that can often be blamed on poor indoor air quality. Asbestos, formaldehyde, pesticides, radon, mold spores, bacteria and viruses are unwanted guests in many indoor environments.

Don’t try to save a few dollars by cleaning disposable air filters. Washing them with water not only causes deterioration but can lead to mold growth. Vacuuming the filter or shaking it doesn’t fully clean the inner fibers. Make sure to replace these filters as recommended by the manufacturer. World Class Services further recommends regular maintenance of the HVAC system to remove harmful toxins and optimize efficiency, reliability and longevity.

Reach out to World Class Services at (253) 343-0000 or via our online contact form to discuss options for enhanced indoor air quality. When you work with us to implement whole-home strategies and today’s innovative IAQ technology, you can Feel The Difference. We offer professional services across Kent, Des Moines, Renton, Federal Way, Burien, & Covington, WA.

Schedule With World Class Services Today!

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Residential & Commercial


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Residential & Commercial

Air Conditioning

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Residential & Commercial

Ductless HVAC

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Electrical Services


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Electrical Services

EV Charge Ports

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Indoor Air Quality

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Duct Cleaning

Customer Reviews
What They're Saying
Michael L.

Brandon come out to our place to clean out our dryer vent. He was great and did a fantastic job cleaning our vent, which has five elbow joints between the dryer and the outside. The louvers on the vent cap outside were barely moving before he came, but they were flapping wide open after he was done (see videos). My wife and I are very pleased with the work he did. We’ll be using World Class Services again!

Greg B.

I highly recommend World Class. Our gas furnace went out and they were able to schedule an appt for the same day. Devan was great and got us back up and running quickly at a fair cost without even needing to replace a part. I will definitely use them again for future furnace maintenance and repair.

Kelly C.

It was a joy to have Devan service our furnace. It was really cool to have him text confirm with his picture. His professional demeanor, accountability and communication was wonderful! It was also appreciated having pictures of our job and adequate description of what was done for our records… excellent! I can’t remember ever having that nice of a visit to provide a service. Looking forward to seeing him again for our next service needed.

Joshua S.

While no one wants an unplanned HVAC issue, we were delighted with World Class Services! Devan was immensely helpful, and communicated each step between our first call and final resolution. I’ll be using him and his team again, and have even recommended World Class to some family and friends in the neighborhood!


Great customer service from both Cyndi and Devan since start to finish. I booked a furnace maintenance and Cyndi was responsive and eager to answer all of my questions. Devan was on time, professional and did a great job with the maintenance service. He was willing to answer all of my questions and was not afraid to share his knowledge, insights and expertise. It truly felt like he was here to help rather than trying to sell, which I really appreciated.

Cameron P.

The technician was very communicative, told me when he was going to arrive and diagnosed the issue quickly and efficiently. He was very respectable and clear and concise on what was needed and was more than happy to hire him for this repair. Too many times I am asked to fill out forms for a review but I was eager and happy to do so following my visit by the tech and he represented WCS very well.

Marie L.

World class definitely leaves up to their name, as they provide top notch world class service. They contact you at every process, great at communicating changes . Sending the picture of who is arriving was a great way to ease and feel safe. Devan was respectful of our home (wore booties without being asked), he was respectful of our time and was great at explaining what’s needed and not needed. I would highly recommend world class for heating and cooling needs.

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