Indoor Air Quality in St. Charles, MO

An indoor air quality test in St. Charles, MO is a 48-hour continuous monitoring assessment, not a spot check. Air Sense Environmental records particulates, VOCs, CO2, CO, temperature and humidity in St. Charles homes at one-minute intervals and turns the data into a written report with specific fixes.

What does an indoor air quality test measure in a St. Charles home?

• Particulate matter (PM2.5 and PM10) from cooking, candles, smoke and HVAC systems
• Chemical vapors (VOCs) from paints, cleaners, new flooring and furniture
• Carbon dioxide and carbon monoxide, which point to ventilation and combustion problems
• Temperature and relative humidity; sustained humidity above 60 percent is a warning sign
• Radon (optional), measured against the EPA action level of 4.0 pCi/L

When should St. Charles homeowners test indoor air quality?

St. Charles combines historic Main Street and Frenchtown, with 1800s brick homes on stone foundations, and the tri-level and split-level subdivisions built from the 1960s to the 1980s across the rest of the city. These are the situations and St. Charles home types where a test pays off:

• Allergy or respiratory symptoms that ease when you leave the house
• After a renovation, new flooring or new furniture
• Humidity that stays high, or a musty smell from a basement or crawl space
• Before buying or selling a home
• Historic homes near Main Street and Frenchtown with stone foundations and cellars
• Tri-level and split-level homes from the 1960s to 1980s, where the lower level is usually a living space

How does indoor air quality testing work in St. Charles?

1. Monitor placement. One or more continuous monitors go in the rooms where the family spends its time.
2. 48 hours of data. Readings are logged at one-minute intervals through normal daily life.
3. Written report. You see each pollutant against its healthy range, with the specific fix for anything outside it.

What happens after the indoor air quality results?

The report names the problem, and Air Sense Environmental installs the fix it calls for: an AprilAire whole-home dehumidifier for high humidity, an energy recovery ventilator for stale air and rising CO2, or a radon mitigation system when radon is at or above 4.0 pCi/L. The main indoor air quality testing page covers the equipment and the full process.

How much does indoor air quality testing cost in St. Charles, MO?

Pricing depends on the size of the St. Charles home and how many monitoring locations it needs; most single-family homes need one or two monitors. Call 314-664-9807 for a free consultation and an exact quote.

St. Charles neighborhoods and nearby communities

Air Sense Environmental works across St. Charles, MO, including historic Main Street, Frenchtown and the neighborhoods along the Highway 94 corridor, in ZIP codes 63301, 63303 and 63304. Nearby communities with their own service pages:

• Air quality and radon services in St. Peters, MO
• Air quality and radon services in O’Fallon, MO
• Air quality and radon services in Maryland Heights, MO
• Air quality and radon services in Florissant, MO
• All Air Sense Environmental service areas

From Our Work