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A 2025 customer said radon in the house came down from about 12 pCi/l to about 1 pCi/l, and that the company worked to make the system as concealed as possible. Its 15 Google ratings average 4.7 stars. The company's website describes it as family owned and says the business was started in April 2005 together with the writer's father, A. Douglas Thibodeau. A 2025 customer said a mail-in test turned up a radon issue, and Mike fit them into his calendar, showed up on time and did the install. A 2025 customer said the quote included a licensed electrician to handle the switch installation. A 2025 customer praised the work Mike and his son did, inside and outside the house. In a 2024 review, a customer said the company followed up when the first fan motor had a problem and took care of it quickly. A 2023 customer said their water was also tested for radon, and that licensed electrical work was included in the estimate. A 2023 customer described a father/son team installing a radon mitigation system in their home. A 2022 customer said Michael had the basement mitigated in one afternoon and left the workspace very clean. In a 2021 review, a customer selling a home with high levels of radon in the water said Mike answered when they reached out around 11pm, found a day to install a double tank radon system, and took time to answer the buyer's questions. A 2023 customer said the company refused to come back out to remedy a problem caused by its tanks, and that calls were either ignored or met with excuses. Connecticut lists its home improvement contractor registration, HIC.0644308, as active, held by A Douglas Thibodeau LLC.
Called this gentleman this morning. Very very helpful took the time out to explain things gave me reassurance about my situation. Very knowledgeable, answered promptly and spent a considerable amount of time explaining to us what we can and can’t do. I highly recommend Mike if you have any Radon problems or situations with your system.
Mike was great to work with. We discovered we had a radon issue through a mail in test. I called Mike and he was incredibly responsive and thorough with the options. He fit me in his calendar, showed up on time and did a great job with install. Very thankful to have called Mike
I cannot agree more with previous reviews about the quality of work provided by Mike and his son. Both individuals were knowledgeable and excellent to work with. Mike is very responsive and answered all my questions. The final result, both inside and outside of the house, was more than I could've hoped and would highly recommend them!
Mike is incredibly knowledgeable and kind. His work is super neat and professional. The quote was very fair and even included a licensed electrician to handle the switch installation. I highly recommend his company — you won’t be disappointed!
Polite and Professional. Worked to make the radon in air mitigation system as concealed as possible. Very informative about how the installed system works. Brought our house down from ~12pCi/l to ~1pCi/l, well below the actionable level.
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Certified attributes are verified against the public registry. Others are the business's own statement.
1 change recorded — last scanned Oct 14, 2026.
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