Radon Testing & Mitigation in Highland, IL

Air Sense Environmental provides radon testing, radon mitigation, indoor air quality testing and crawl space encapsulation in Highland, IL. The company is IEMA-licensed (#RNM20232346) and NRPP-certified, works across Madison County from its Edwardsville, Illinois headquarters, and measures every radon job against the EPA action level of 4.0 pCi/L.

Is radon a problem in Highland, IL?

Yes. Madison County is in EPA Radon Zone 2, where the predicted average indoor radon level is 2 to 4 pCi/L, and individual Highland homes routinely test well above the 4.0 pCi/L action level. The Illinois Department of Public Health reports that about 41 percent of Illinois homes tested have come back at or above 4.0 pCi/L, and Illinois requires radon professionals to hold an IEMA license. Highland is a Swiss-heritage city on the eastern side of Madison County, with an older town center around the square and newer subdivisions toward Silver Lake.

Radon varies house by house rather than neighborhood by neighborhood. Two homes on the same Highland street, built the same year by the same builder, can test at 1 pCi/L and 12 pCi/L because of what sits under each lot and how each foundation was sealed.

Radon testing in Highland, IL

Radon testing in Highland uses a calibrated continuous radon monitor for a 48-hour closed-house test, with hourly readings and tamper detection that hold up in a real estate transaction. The St. Louis radon testing page covers how the test works, and the radon testing cost guide holds current pricing.

Radon mitigation in Highland, IL

Radon mitigation in Highland means a sub-slab depressurization system designed around the specific foundation, with the fan outside the living space and a post-mitigation test to prove the result. See the St. Louis radon mitigation services page for the process, documented results and warranty.

Indoor air quality testing in Highland, IL

Indoor air quality testing in Highland measures particulates, VOCs, carbon dioxide, carbon monoxide, temperature and humidity over at least 48 hours, with radon as an optional add-on, and ends in a written report. Details are on the St. Louis indoor air quality testing page.

Crawl space encapsulation in Highland, IL

Crawl space encapsulation in Highland seals the floor and walls with a reinforced vapor barrier, closes the vents and controls humidity with a dehumidifier, which also cuts off a common radon pathway. Read more on the St. Louis crawl space encapsulation page.

Which Highland homes does Air Sense Environmental work on?

The Highland homes the team sees most often:

• Early 1900s homes near the town square with older basements
• Mid-century ranches with basements or crawl spaces
• Newer subdivision homes on poured basements
• Rural homes on acreage with private wells

What should Highland homeowners expect?

1. Test first. A 48-hour continuous monitor test gives the number everything else depends on.
2. Read the report together. You get the hourly data and a plain explanation of what it means for the house.
3. Design the fix. If the reading is at or above 4.0 pCi/L, the system is designed around your foundation during a free in-home estimate.
4. Install and verify. Most systems go in within a single day, and a post-mitigation test confirms the result.

Highland neighborhoods and nearby communities

Air Sense Environmental works across Highland, IL, including the town square, the neighborhoods near Silver Lake and the Route 143 corridor, in ZIP code 62249. Nearby communities with their own service pages:

• Radon testing and mitigation in Troy, IL
• Radon testing and mitigation in Edwardsville, IL
• Radon testing and mitigation in Collinsville, IL
• Radon testing and mitigation in O’Fallon, IL
• All Air Sense Environmental service areas

From Our Work