Radon mitigation: a guide for pros
What customers ask, how to win the job, and what to put on your profile.
Offering radon mitigation
You install radon mitigation systems, running suction points, vent pipes and fans that draw soil gas from beneath the foundation and release it above the roof. Clients hire you for a system that lowers the level, a clean installation and a post-work test that proves the result.
What customers ask
- Which suction point is the right one for my foundation?
- How will the pipe be routed and sealed at the roof?
- Who makes the electrical connection?
- Will you test after installation, and will I get the result in writing?
- What is the warranty on the fan and the installation?
- Are you certified, and are you insured?
How to win the job
- On the first call, ask for the test results, the foundation type, the basement layout and the home's age, then say how you will diagnose the suction point
- Run a diagnostic suction test and record the pressure readings, so the suction point is chosen from measured data
- Show the pipe routing and the roof penetration in the proposal, with the flashing detail and the exhaust location
- Put the sealing work, the fan model, the electrical connection and the monitor on separate lines in the quote
- Explain where the exhaust will sit relative to windows, doors and air intakes, and show the clearance in the plan
- Offer a post-installation test, and say that the result will be shared with the homeowner in writing
What to put on your profile
- Post photos of installed suction points, pipe runs and roof exits, with the foundation type labeled
- List the foundation types you mitigate and the fan models you install
- Show a sample post-installation test report with the before and after levels
- State your certification, your license where it applies, and your insurance details
Follow-up that helps the customer
- Offer a yearly check of the fan, the monitor and the pipe, and a retest every few years
- Suggest a retest after any foundation repair, basement finish or sump work that changes the soil gas path
- Offer to keep the installation record, the diagnostic readings and the warranty papers on file for the homeowner
Licenses and permits
Radon mitigation contractors are commonly required to be certified or licensed by the state, and electrical connections are often required to be made by a licensed electrician. Permits may apply to the installation. Check with your state radon or health office and your local building department for your certification, insurance and permit rules before you take the work.
Questions
What do I do if the test after installation is still high?
Re-check the suction point, the seals and the fan performance, and retest under the test conditions. Explain to the homeowner what you found and what the next adjustment is, in writing.
How do I handle a home with a finished basement and no access to the slab?
Look for other access, such as a sump pit, a crawl space or a utility room, and explain any limit in the proposal. Say what the alternative route costs in time and in the pipe run.
How do requests reach me on infinibell?
Customers describe the job and pick the pros they want by name, and only the pros they picked see the request. Joining is free. You pay only for the leads you accept, and you can decline a request for free. Every pro is reviewed before going live.
About this guide
This national guide is written and checked by infinibell. Rules and conditions differ by place, so local pros are credited on guides for the cities they serve, not on national ones.
Edit history
- Oct 29, 2026: Drafted by infinibell to our content guidelines.
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