Verify the person, category and current status
Begin with the IEMA-OHS radon program and its public license directory. Match the professional’s name to the person named for your job. Check the relevant category and current record rather than treating a company name as enough.
Ask separately who will provide any measurement service. Save the details with the proposal and repeat the check if the assigned professional changes. Our Illinois license verification guide walks through the check. A customer review about licensing describes that customer’s experience at that time; it does not verify today’s status.
Compare the scope after checking credentials
| Decision | What the proposal should clarify |
|---|---|
| Foundation treatment | Basement, slab, crawl area and additions included in the assessment. |
| Collection and route | Proposed collection approach, fan location and pipe route. |
| Access and finishes | Work around finished rooms, restoration responsibilities and future equipment access. |
| Electrical work | Who supplies the connection and any separate electrical work. |
| Testing | Who arranges verification, supplies the report and explains the result. |
| Written terms | Price, exclusions, warranty terms and responsibility if more work is needed. |
Credentials establish one important part of the selection. They do not make two different scopes equivalent. Ask each bidder to explain omissions or assumptions before you compare the total.
Use your house’s report, not the county’s average
A Madison County or St. Clair County summary cannot determine the radon level in your home. Give the professional the complete measurement report, including dates and test location, plus information about any existing fan or passive pipe. Describe how the lower level is used and whether you plan renovations.
For a house with a basement and crawl area, ask how the proposal accounts for both. For a finished lower level, discuss access and visible pipe before choosing the route. If you need a measurement first, the Metro East radon testing guide explains what to arrange and what information to keep.
Make follow-up testing part of the plan
Agree on verification responsibilities before installation: who schedules the measurement, who receives the complete report and who discusses any further action. Record those responsibilities in the proposal rather than relying on an informal statement that the fan will be checked.
A running fan or pressure indicator is not a radon concentration result. Keep the system instructions and the radon report together. For a real estate transaction, share the inspection and closing dates early and confirm assessment, installation and testing dates separately; the desired closing date does not by itself establish the service schedule.
Compare budget and transaction responsibilities separately
Request a written quote for the assessed property. Air Sense publishes a planning range for standard active sub-slab work, but a range does not price every Illinois foundation or crawl-space project. Use the foundation, route and included work to explain differences between proposals.
If a buyer, seller or insurer may pay part of the work, obtain that agreement from the responsible party. The contractor’s installation scope and the purchase agreement serve different purposes. Our Illinois home-sale disclosure guide explains why disclosure information and the decision to test or mitigate should be considered separately.
What Air Sense offers Metro East homeowners
Air Sense Environmental operates this resource; Metro East Radon is not a separate local office. The company’s base is at 5237 Old Alton Edwardsville Rd, Edwardsville, Illinois. Share your address to confirm coverage and scheduling for Edwardsville, Glen Carbon, Maryville, Collinsville, Granite City, Troy, Alton, Belleville or O’Fallon, Illinois.
“As first time home owners, he made navigating the radon requirements quick and easy.”
August 2024 Google review excerpt from the existing Air Sense review collection. Read the original review. The reviewer’s location is not established here, and the review is not proof of your project’s technical outcome.
Call 314-664-9807 with the report, foundation details and deadline. Ask for the responsible professional’s current credentials and an address-specific scope before making your decision.
Questions before you book
Does a mitigation license establish measurement authorization too?
Do not assume so. Check the appropriate category for each service and identify who will perform it.
Does a county radon map tell me whether my home needs mitigation?
No. County information gives context. A property-specific measurement and its complete report inform the next decision.
What should I keep after the work?
Keep the agreed scope, professional’s details, equipment information, operating instructions, written terms and verification report with the house records.