How To Select A Radon Mitigator

Radon Mitigation Estimates

Select a Radon MitigatorChoose a radon contractor to fix the problem just as you would choose someone to do other home repairs. It is wise to get more than one estimate, to ask for references, and to contact some of those references to ask if they are satisfied with the radon mitigation company’s work. Also, ask your state radon office or your county/state consumer protection office for information about the radon companies.

Evaluate and Compare Radon Contractors



  • Will the contractor provide references or photographs, as well as test results of ‘before’ and ‘after’ radon levels of past radon reduction work? Can the contractor explain what the work will involve, how long it will take to complete, and exactly how the radon mitigation system will work?
  • Does the contractor charge a fee for any diagnostic tests? Although many contractors give free estimates, they may charge for diagnostic tests. These tests help determine what type of radon reduction system should be used and in some cases are necessary, especially if the contractor is unfamiliar with the type of house structure or the anticipated degree of difficulty. See “Radon Reduction Techniques” for more on diagnostic tests.
  • Did the contractor inspect your home’s structure before giving you an estimate for radon mitigation?
  • Did the contractor review the quality of your radon measurement results and determine if appropriate testing procedures were followed?

Compare the contractors’ proposed costs for the radon system and consider what you will get for your money, taking into account: (1) a less expensive system may cost more to operate and maintain; (2) a less expensive system may have less aesthetic appeal; (3) a more expensive system may be best for your house; and, (4) the quality of the building material will affect how long the radon mitigation system lasts.

Radon Contractor’s Proposal and Estimate include the following?

  • Proof of state certification and/or professional proficiency or radon certification credentials?
  • Proof of liability insurance and being bonded, and having all necessary licenses to satisfy local radon remediation requirements?
  • Diagnostic testing prior to design and installation of a radon removal system?
  • Installation of a warning device to caution you if the radon mitigation system is not working correctly?
  • Testing after installation to make sure the radon reduction system works well?
  • A guarantee to reduce radon levels to 4 pCi/L or below, and if so, for how long?

Radon Mitigation Contractor Contact