Customer Reviews

Extremely pleased with the professionalism and thoroughness from Mike at A. Douglas Thibodeau LLC. He was a pleasure to work with from start to finish. Mike informed us on everything he was doing to make sure my new home was safe for me and my family. I would highly recommend Mike to anyone in need of Radon mitigation assistance.

Alexandra Fritz

I first viewed Mike’s work after his home-sale installation at my daughter’s new home. He created an elegant solution to a difficult install, and the quality of the work was recommendation enough for me to call concerning my own remediation needs.

My needs involved connecting a never-used 26-year-old sub-slab radon piping system to an existing 2-story riser and then going through the roof. While it sounds simple, be aware that all of the previous Radon System work was done during the early part of the building process, and no one had any interest along the way in maintaining clear access.

Mike devised a plan, revised it as needed during the install, and reduced my air radon reading from 8.8 to an almost non-existent 0.3.

Professional work, reasonable cost, and great results-Highly Recommended!

Bill Hann

We recently had Mike Thibodeau do radon testing and subsequently install a radon fan system in our basement. My husband and I were very happy with the prompt responses to our calls and questions. Mike was professional, courteous , informative in regard to our installation. We would highly recommend using him.

Susan and Doug Stewart

If you're in need of a radon mitigation system, I highly recommend A. Douglas Thibodeau. Mike explained all the steps involved and was able to answer my questions clearly and honestly. The work was done professionally and promptly by Mike and his team. We are very happy customers!


Very happy working with Mike. Always very responsive to calls. Took the time to understand the problems I was trying to address (more than just radon), and walk me through the options.

Installation was very clean, and Mike was willing to chat and address questions post-install. A refreshing change to my normal experience with contractors! I've already recommended him to others.


Professionalism, Punctuality, Quality, Responsiveness, Value. When I bought my house I tested for Radon in both air and water. The air was good, but my water tested high, I called several other companies and they all tried to price gouge me for some bubble up thing that cost 5 grand. Mike explained to me that my levels were low enough that I could use the system he installed at 1/2 the price. I would recommend him 10 times out of 10.

Mark Cyg


Wash your Hands!