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Indoor Air Quality: What Every Des Plaines Homeowner Should Know

The IAQ Pros TeamAugust 18, 2026Updated October 21, 2026 1 min read

The hidden problem with indoor air

Most people assume indoor air is cleaner than outdoor air. Studies show the opposite — indoor air can be 2 to 5 times more polluted, according to the EPA.

Common indoor pollutants

  • Pollen and dust tracked in and circulated by your HVAC system
  • Pet dander that lingers in ducts and filters
  • Volatile organic compounds (VOCs) from paints, cleaners, and furniture
  • Mold spores that thrive in humid basements and ducts

Practical steps to improve air quality

  1. Upgrade your filters to MERV 11 or higher.
  2. Add a whole-home air purifier to capture fine particles.
  3. Control humidity between 30–50% with a dehumidifier.
  4. Schedule duct cleaning every 3–5 years.

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Written by

The IAQ Pros Team

Licensed, insured HVAC and indoor air quality technicians serving Des Plaines and the northwest Chicago suburbs — available 24 hours a day, 365 days a year.

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