Air Sense Environmental expands indoor air quality services across Greater St. Louis

If you live in the Greater St. Louis area, you probably know someone who has tested their home for radon or installed a mitigation system. Radon testing has become a standard step during home inspections, and for good reason. The EPA ranks radon gas as the second leading cause of lung cancer, and parts of the bi-state metro sit in Zone 1, meaning the potential for elevated indoor radon levels is real. For years, Air Sense Environmental has been the name people in Edwardsville turn to for radon testing and radon mitigation. Now the company is taking a broader view of what healthy indoor air really means.

Radon is a tricky contaminant. It comes from the natural decay of uranium in soil, seeps into basements and crawl spaces, and you cannot see or smell it. The only way to know if it is present is through proper testing. Air Sense Environmental holds certification through the Illinois Emergency Management Agency, or IEMA, which is the state body that oversees radon measurement and mitigation. That certification matters. It means the company follows strict protocols for test kit placement, laboratory analysis, and system design. But radon is only part of the picture. People spend roughly ninety percent of their time indoors, and the air inside a home can carry a mix of pollutants that affect comfort, sleep, and long-term health.

Why indoor air quality matters beyond radon

Indoor air quality, often abbreviated as IAQ, covers a range of contaminants. Mold spores from a damp crawl space, volatile organic compounds from new furniture or cleaning products, dust mites, pollen, carbon monoxide from an attached garage. Each one can trigger allergies or worsen respiratory conditions. In a tightly sealed modern home, these contaminants build up unless there is deliberate ventilation or filtration. Air Sense Environmental expands indoor air quality services to address exactly this gap. The company now offers assessments that go beyond radon and look at the full profile of the indoor environment.

That shift makes sense for the bi-state metro region. St. Louis and its Illinois suburbs share a climate with hot, humid summers and cold winters. People seal up their homes for months at a time. If the ventilation system is not balanced, the air inside can become stale and polluted. I have seen basements in older Edwardsville homes where the only air movement comes from a single bathroom fan. That is not enough to keep moisture levels in check, let alone dilute the buildup of radon or other gases. Air Sense Environmental now helps homeowners understand where their air is coming from, how it moves through the house, and what steps will actually improve it.

Practical steps for cleaner indoor air

One of the first things a technician will do during an IAQ evaluation is check for obvious sources of moisture. A damp basement is a breeding ground for mold. If the radon mitigation system is already in place, it often includes a sub-slab depressurization fan that can also help pull moisture out of the crawl space. But if the system was installed years ago and has never been serviced, the fan might be running inefficiently or the vent pipe could be blocked. A service call from Air Sense Environmental can catch those problems before they become expensive repairs.

Another common fix is improving ventilation in the living spaces. Many homes built before the 1990s were not designed with mechanical ventilation in mind. They relied on leaky windows and doors to exchange air. Today we seal those leaks for energy efficiency, but we do not always add the mechanical ventilation to replace the lost airflow. Air Sense Environmental expands indoor air quality services by helping homeowners choose the right ventilation strategy for their specific house. Sometimes that means a heat recovery ventilator that brings in fresh outdoor air without wasting energy. Other times it means adding exhaust fans in bathrooms and kitchens, or balancing the existing HVAC system so it delivers enough outdoor air to the occupied zones.

I should also mention the role of filtration. A standard furnace filter catches dust and pet dander, but it will not trap mold spores or fine particles from smoke or cooking. Upgrading to a MERV 13 or higher filter can capture a wider range of contaminants. Air Sense Environmental can recommend the right filter for your system and make sure the pressure drop across the filter does not strain the blower. It is a small change that can have a noticeable effect on IAQ.

What the expansion means for homeowners

The decision to broaden services was not sudden. Air Sense Environmental has been doing radon testing and mitigation in the bi-state metro for years. They know the local geology, the common construction types, and the regulatory landscape under IEMA. Expanding into general IAQ was a natural extension of that expertise. The same diagnostic skills that help locate radon entry points also help identify mold reservoirs and ventilation shortfalls. The same crew that seals cracks in the basement slab can also seal ductwork in the attic.

For homeowners in St. Louis and the surrounding Illinois counties, this expansion means one less company to call. Instead of hiring a radon tester, then a mold inspector, then an HVAC contractor, you can get a comprehensive picture from a single provider. That saves time and reduces the chance that one contractor misses something another would have caught. I have heard from people who discovered a radon problem during a home inspection, installed a mitigation system, and then noticed their allergies acting up every spring. They never connected the two issues. A full IAQ assessment could have identified the mold or pollen intrusion at the same time as the radon.

Listening to the experts

A recent episode of the News Front Podcast covered this exact topic. The host interviewed the team at Air Sense Environmental about their new IAQ offerings and what it means for the Edwardsville community. The conversation touched on the science of radon gas, the importance of IEMA certification, and the practical challenges of retrofitting ventilation into older homes. It is worth listening to if you are considering an IAQ evaluation or just want to understand what goes into a professional assessment.

The podcast episode also highlighted something I think is often overlooked: the personal experience of the people doing the work. The technicians at Air Sense Environmental have been inside hundreds of basements and crawl spaces across the bi-state metro. They have seen what happens when a sump pump fails, when a dryer vent is disconnected, when a radon mitigation system was installed incorrectly by someone else. That field knowledge is hard to replace with a textbook. It informs how they approach each new job and how they design systems that actually work in the conditions they encounter every day.

A few things to keep in mind

If you are thinking about testing your home for radon or looking into broader IAQ improvements, here are a few practical points you might find useful:

• Start with a test kit. Radon levels can vary from season to season and even day to day. A short-term test gives a quick snapshot, but a long-term test placed for three to twelve months gives a more reliable average. Air Sense Environmental can help you choose the right test for your situation.
• Do not ignore the basement. Radon enters through the slab and walls in contact with the soil. If you finish a basement without addressing radon first, you are sealing the problem inside your living space. A mitigation system installed before finishing is far cheaper than retrofitting later.
• Ventilation matters more than you think. Even if your radon levels are low, stale indoor air can still affect your sleep, your concentration, and your immune system. A simple heat recovery ventilator can make a noticeable difference in comfort and health.
• Check your filters. If you have a forced-air furnace or central air conditioner, the filter is your first line of defense against airborne particles. Replace it on schedule and consider upgrading to a higher MERV rating if your system can handle it.

Air Sense Environmental expands indoor air quality services in a way that matches the real needs of the Greater St. Louis community. They are not trying to sell everyone a complete IAQ overhaul. They offer targeted testing and practical solutions based on what they find. That is the kind of service that builds trust over time. If you live in the bi-state metro and have questions about the air in your home, it is worth giving them a call.

Radon testing and mitigation will always be the backbone of what they do. The science is clear, the health risks are documented, and the IEMA certification ensures the work meets a high standard. But the expansion into broader indoor air quality services reflects a growing awareness that healthy indoor air is about more than just one gas. It is about managing the whole environment. That is a shift I expect to see more of in the coming years, and Air Sense Environmental is ahead of the curve.