Radon Mitigation Services of Maine, LLC

Radon Mitigation Services of Maine installs radon mitigation systems out of Holden, and its Google page shows 5 stars from 117 ratings. The company's website describes it as an NRPP-certified radon mitigation company with over 15 years of experience. A recent customer said the basement measured over 10 picocuries per liter before mitigation, and three weeks after the install the seven-day average had dropped to 0.5. Mark and Mike showed up right on time for a recent customer and made sure the pipes were straight and level, that customer wrote. A recent customer said Mark arrived at 8am at a property he had never visited and the work was complete by the afternoon. One recent customer said the installers took their input on placement, and the system cannot be seen from the street. A 2026 customer said drilling the basement floor of a roughly 50-year-old house hit extremely non-porous aggregate; after two weeks the reading was cut in half, Mark followed up with a second vent hole, and the reading went from 15 to below 2. A 2026 customer whose radon system had been installed improperly by someone else said Mark walked them through what to look for over the phone while he figured out the problem. A 2025 customer said Mark and Doug worked around an unsealed perimeter drain at a new house in Windsor, and radon levels were below detection limits on two independent tests afterward. A 2026 customer said radon tests went from 8.0 to.03 once the work was completed, at the price they had agreed on. A 2023 customer said Mark and Doug completed the installation in 3 hours and reviewed the system with them before leaving.