Enter your Zip Code to see if we serve your area:

5 Danger Levels of Indoor Air Quality

The EPA breaks down potential indoor air quality issues into 5 danger levels. National Radon Defense IAQ professionals are trained in helping our customers improve their overall indoor air quality, as well as, reducing radon levels to their lowest possible level.

our service area

We serve the following areas

Our Locations:

Woods Basement Systems
524 Vandalia Street
Collinsville, IL 62234
1-618-708-4055