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    DMHI Home Inspections

    5.0 (1 review)
    Closed • 9:00 am - 5:00 pm

    Services - DMHI Home Inspections

    Home inspection

    Environmental testing

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    11 years ago

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    Airtech Radon - Radon system interior view

    Airtech Radon

    (7 reviews)

    We had a great experience with Airtech Radon! Brian was absolutely amazing, he was friendly,…read moreprofessional, and very knowledgeable. He was quick and efficient, and did an excellent job installing our radon mitigation system. He worked very cleanly and left everything looking great. We really appreciated how easy he made the whole process and would definitely recommend Airtech Radon to anyone needing radon mitigation services!

    I hired this company to mitigate radon in my 1950s home, which has clay soil under the slab and an…read moreinterior French drain system around the basement. In my opinion, they did very little investigation before starting the job. Their first attempt was simply installing a sub-slab suction point without tying into the French drain system at all. They left a monitor for a few days, and the radon levels did not change. About a month later, they came back and added another suction point. This time, they ran piping across the basement to tie into part of the French drain system. The frustrating part is that there were easier access points near the original system, including the sump area or the channel leading into the sump, that could have been evaluated first. Again, they left the monitor for a few days, and the radon levels still did not change. Another month later, they returned and added a 2nd sub-slab suction point in the center of the basement. Still no real improvement. At that point, they told me I needed to seal cracks around the basement, so I did. That also did not fix the problem. Their next suggestion was to stack two fans to increase suction. I did not feel comfortable with that approach. I felt it made more sense to use a properly sized higher-suction fan rather than stacking fans and hoping for the best. Eventually, I decided to stop using this company and troubleshoot the issue myself. During that process, I discovered they had only tied into half of my French drain system. My house actually has two separate French drain sections, which they never identified. Once I added a suction point into the second French drain system and upgraded to a higher-pressure fan with good airflow, the system finally started working the way it should. My setup is now basically a hybrid system: three sub-slab suction points and two French drain suction points. In hindsight, I believe if both French drain systems had been properly investigated and tied in from the beginning, some of the extra sub-slab work may not have been necessary. Overall, my biggest frustration is that there did not seem to be a real diagnostic process. It felt like they were guessing, waiting weeks between visits, and hoping the numbers would eventually drop during warmer weather. But radon is often worse in the winter because of stack effect, so a temporary drop in summer does not necessarily mean the problem is fixed. Based on my experience, I would not recommend this company for a difficult radon mitigation situation, especially in an older home with interior French drains and clay soil. If the house was built with gravel under the slab, they would probably do great. However, my experience with them has been terrible . So terrible that I had to figure this out on my own. If I could give them 0 stars, I would.

    DMHI Home Inspections - home_inspectors - Updated October 2026

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