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Protect Your Home With True Indoor Air Quality Testing That Goes Beyond the Surface

Indoor air quality problems are often invisible, but they can seriously affect your comfort, health, and even property value. At Green Air Duct Cleaning St Charles, we specialize in delivering precise, science-backed Indoor Air Quality Testing & Contamination Detection services to help homeowners and businesses understand what they’re breathing — and what needs to be fixed.

From mold spores and allergens to chemicals, VOCs, dust buildup, and post-construction contaminants, our team uses industry-grade testing equipment to uncover the root of air quality issues. Whether you’ve noticed musty odors, dust settling quickly, allergy symptoms, or worsening indoor comfort, our testing reveals what traditional HVAC cleaning alone can’t detect.

With over a decade of experience serving St. Charles County, we give you the clear, documented results you need to make your space safer, healthier, and free from hidden airborne contaminants.

Our IAQ Services

We offer a range of specialized indoor air quality services, each designed to tackle specific concerns. Learn more about these services through our dedicated pages:

These services ensure a complete understanding of your indoor environment, from detecting hidden contaminants to improving air quality throughout your home or business.

Accurate Testing for Mold, Microbial Growth & Hidden Moisture Problems

One of the most common IAQ threats in St. Charles homes is mold — especially in older properties, basements, crawlspaces, and homes that have experienced previous moisture issues. Our mold air testing measures:

  • Airborne spore counts

  • Mold species identification

  • Surface contamination

  • Moisture source detection

  • HVAC system microbial presence

This data helps determine whether professional remediation is necessary or if smaller corrective actions can resolve the issue.

We provide a full written report, plus tailored recommendations based on your home’s exact spore activity and moisture conditions.

Chemical, Allergen & VOC Detection for Sensitive Environments

Many St. Charles families turn to us because someone in the home suffers from:

  • Asthma

  • Allergies

  • Chronic respiratory irritation

  • Chemical sensitivities

  • Frequent headaches or sinus issues

Everyday materials — paints, glues, flooring, cleaners, insulation, and more — release volatile organic compounds (VOCs) and airborne irritants. Our testing identifies:

  • VOCs

  • Pet dander & hair

  • Pollen & seasonal allergens

  • Dust mites

  • Chemical residues

  • Odor-causing particles

These results help you understand exactly what you’re breathing and how to correct it.

Why St. Charles Trusts Green Air Duct Cleaning for IAQ Testing

✔ Locally Owned & Operated

We are a St. Charles-based business, not a franchise. We know the local building types, local moisture issues, and regional allergens.

✔ Science-Based Air Quality Testing

We use calibrated, industry-grade equipment — not cheap handheld sensors.

✔ Clear, Easy-to-Read Reports

You receive documented air quality findings in simple, straightforward language.

✔ Transparent Recommendations

You’ll never be pressured into unnecessary services. You get the facts, and you decide the path forward.

✔ Full IAQ & HVAC Services Under One Roof

No need to hire multiple companies — we can test, clean, and correct the issue from start to finish.

What You Can Expect During Your IAQ Testing Appointment

  1. On-site inspection to identify visible problems and moisture risks

  2. Air sampling & surface testing using professional IAQ devices

  3. HVAC system evaluation including ducts, vents, returns, and blower areas

  4. Data interpretation & laboratory review (if required)

  5. Full documentation & recommendations

  6. Same-day explanation of results in plain language

Most appointments take 60–90 minutes depending on home size.

Schedule Indoor Air Quality Testing in St. Charles Today

Your indoor air directly impacts your health, comfort, and peace of mind. Whether you’re experiencing odors, allergies, or simply want clarity, Green Air Duct Cleaning St Charles provides accurate testing with honest, actionable results.

📞 Call Today: 636-925-2954
📍 Proudly Serving St. Charles County & Surrounding Areas

Our Services

Please read more about the services we provide in your area and select “click here” to learn more about the processes.

Residential Services

Are you noticing poorer air quality in your home? More allergic reactions? Our team is available to come out and assess your air duct system. We are able to clean, repair, or provide replacement for air duct systems.

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Commercial Services

When was the last time you had your air duct system evaluated? Have you noticed poorer ventilation at your business? Commercial facilities tend to have poorer air quality than other sites due to the amount of recycled air in such facilities. We are able to clean, repair, or provide replacement for air duct systems.

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Healthcare Services

Having a properly working air duct system is crucial in healthcare facilities to ensure the safety of the people within them. This should be the most sanitized facility! We are able to provide services that can accommodate a large amount of people with the highest quality products.

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A/C Coil Cleaning

Your air conditioning unit can highly influence the air quality in your home or business. It can easily get clogged leading to poorer flow of air throughout, leading to a myriad of problems. Our team is trained to clean and improve function in the A/C coil to improve your air duct system overall.

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Dryer Vent Cleaning

Unbeknownst to most, a dryer vent can accumulate many contaminants that can flow into the air system. It is imperative to have your dryer vent cleaned regularly to reduce poor air quality, preventing health problems. Our team is available for same day or routine appointments to clean your dryer vents.

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Bath Fan Exhaust Cleaning

These systems contribute greatly to the growth of mold and bacteria if not clean properly and regularly. Bath fan exhausts are usually overlooked and not thought to contribute much to air quality, but it is essential to have these cleaned. We are happy to provide same day service or set up routine appointments for cleanings.

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We guarantee:

  • Fast and efficient service
  • Same-day or appointment services 100% satisfaction – just see our reviews!
Call (636) 925 2954
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Contact Us

Please use the form to contact us directly with request for service or any questions you may have.

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Reviews

Take a look at what our customers are saying about us!

=I called in thinking that I would have to wait days until someone could come out and check my ventilation system. I noticed poorer ventilation in my bathroom, and I was concerned about the impact since I do not have windows in there. Surprisingly, Nathan was able to send someone out the same day! I was guilty of not having my air duct system checked sooner but his team was able to come out and clean the bathroom exhaust fan. No more waiting hours for my bathroom to ventilate after a shower!

Sarah Spinneli

I can’t help but give a five-star review. Green Air Duct Cleaning St Charles provided fast and efficient service to clean out my air duct system in my house. The technician was clear about what needed to be done and offered a reasonable price to get the job done. Thank you!

John Bennington

We always contact Nathan when our business needs a routine cleaning for the air ducts. He sends his team out for a free quote and lets us know what needs to be done. I can attest that the products he offers are high quality and have actually reduced the amount of times we have needed to replace parts. I know that my workers are breathing in healthy and clean air thanks to the great work this company does.

Joeseph Spencer/Retail Manager

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