Who to Call to Install Radon Mitigation Systems

This article was created using automation technology and thoroughly fact-checked and edited by HomeAdvisor Editor Ryan Noonan.

If you are wondering who to call to install a radon mitigation system, hire a professional radon detection and reduction specialist, also called a radon remediation professional. In many states, you must choose a state-certified pro after a positive test. 

It’s best to avoid DIY and unlicensed general contractors—incorrect installation can increase radon levels. Use this pro hiring guide to choose safely and confidently.

Benefits of Hiring a Radon Detection and Reduction Specialist for Radon Mitigation

A certified radon specialist delivers reliable testing, an effective mitigation design, and safe, code‑compliant venting. Pros seal cracks, install the fan and piping correctly, and guide you on maintenance to keep levels down. They reduce radon to acceptable levels and confirm performance over time to protect your home and family.

Here are some of the top benefits of hiring a radon detection pro:

• Specialized radon testing expertise for reliable results

• Confirms high results with repeat testing when needed

• Recommends the best mitigation approach for your home

• Seals basement cracks and entry points thoroughly

• Installs fan and piping for proper attic venting

• Knows how to maintain the system over time

• State-certified in many locations where required

• Reduces the risk of making radon worse through DIY errors

• Focused experience with radon detection and reduction

If you’re unsure about the complexity of your situation or want to ensure the highest level of safety, you might want to consider hiring radon removal pros near you to ensure your system is installed and maintained correctly.

Can I Hire a General Contractor for Radon Mitigation?

Do not hire a general contractor for radon mitigation unless they are also a licensed radon remediation professional. Radon mitigation requires specific detection experience and system know‑how that a general contractor may not have. 

An unlicensed general contractor can install the system incorrectly, risking higher indoor radon levels. If a contractor also holds proper radon licensing, they are acceptable. Otherwise, choose a specialist.

How Do Radon Reduction Specialists Mitigate Radon?

Radon mitigation follows a clear process led by a specialist who tests, confirms results, blocks entry points, and vents gas safely outside:

1. Perform a radon test using short‑term or long‑term methods to measure levels.

2. If a short‑term test exceeds 4 pCi/L, repeat to confirm and average the results. Mitigation is required above 4 pCi/L and recommended above 2 pCi/L.

3. Seal cracks and openings to limit radon entry.

4. Install basement piping and a radon fan to move gas upward and out through an attic vent.

How Much Does Radon Mitigation Cost?

Installing a radon mitigation system averages $1,025. Your total depends on your geographic location, the type of system installed, your home’s size, and its foundation. 

You’ll also need to account for ongoing costs, such as repeat testing after several months to confirm performance, routine maintenance, and future radon fan replacement. Radon fans last five to 10 years before replacement is needed.