Top Radon Mitigation Companies in Ashburn

Ashburn, VA (20146)

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Reviews of Local Radon Remediation & Mitigation

Radon Abatement Services
5.0
I called 3 companies to ask about having a radom remediation system installed. When I first called to get information from Radon Abatement Services, John was in the middle of an installation. He explained that it would be better if he could call me back when he could talk without distractions, and he called me back within the hour. He assessed my situation over the phone, asked very appropriate questions about radon level, age of the house, layout, type of basement, etc., and immediately gave me a feeling of confidence in his knowledge and abilities. John also told me exactly how much it would cost ($800) and emailed me a written fixed price quote (as opposed to cost-based, which can fluctuate based on variations in the job). I was able to schedule my radon mitigation system installation within days. On the day of installation, Martin and his assistant arrived within 10 minutes of the schedule time, which I found impressive considering they had to commute around the beltway in rush hour. Martin did a walk-thru of the basement and exterior of the house to determine the most appropriate location for the pipe and fan. Once the location was determined, they did their thing without any issues. It took about 3 hours. My only TINY complaint was that I wasn't warned that the cracks were sealed with sticky stuff, and I stepped in it...maybe give customers a heads up about that. I have no idea if the radon system actually works at reducing the radon in the house because I have not had it re-tested yet. I hope to never need this service again personally, but I would definitely recommend Radon Abatement Services to family and friends.
- Jennifer F....
Radon Abatement Services
5.0
John and his team have the upmost professionalism, and we are extremely satisfied with the result of our radon mitigation system installed in our lower level. John was patient with me as we communicated on possible installation locations and was able to address all of our concerns. The crew provided excellent customer service. The supervisor discussed all of the possible installation options so I could make an informed decision on where to install the system. Our radon was averaging about 7.5 over 30 days, and would peak to 20-30 during heavy rain. Since our system has been installed and running, we've averaged 0.84 - and that's during heavy rain. Lastly, the total cost was fair and a great value for the price. I've dealt with multiple sub-contractors on various projects, and this was one of the better - if not best - experiences. I highly recommend this company if you're considering a radon mitigation system.
- Drew L....
Radon Abatement Services
5.0
Mr. Jim Humphreys provided an estimate for radon mediation that was competitively priced and consistent with other highly rated company?s designs. Once I selected the bid from Radon Abatement Services we agreed to a mutually agreeable date and time for the mitigation system installation. I should note, Mr. Humphreys arrived for each scheduled meeting within 15 minutes of the agreed time, and he went one step beyond by telephoning me in route to advise me of his expected arrival times. Once they arrived and started the installation, it was immediately clear to me that they know their business, and that I had selected the right radon contractor. The system installation was made in an unobtrusive location in my house, the workmanship was first rate, which actually provided for a good looking installation. In summary Radon Abatement Services did what they proposed to do, on time and on cost, and the initial post mitigation radon test results show radon levels well within the government recommended safe levels for occupied residential spaces.
- Willard (....
G M D Construction INC
5.0
Could not have been any better. The office was responsive on initial contact, promptly scheduled, Came out and gave a detailed estimate and discussed their plan with real project photos. Very thoughtful on Options and strategy where to run the piping in a 29 year old house with not easy access for piping run. Detailed info on radon provided. They also replaced and sealed the sump pump which the two other estimates did not even consider. The crew communicated in advance on job start time. Mike and Clayton arrived right on time and were extremely professional and considerate, COVID-19 precautions with masks at all times, and they were done in about 3 hours; (much faster than others which said 1.5 days!) Cleaned up thoroughly vacuum etc. and went over system with me in detail. Their truck was well maintained, orderly with every tool and pipe connector possible. I got three estimates on this job. They GMD were not the cheapest of the three but the ~10 percent premium was worth it and included sump pump replacement and independent inspector testing follow up. Others bidders were cheaper and or did not account for follow up testing and/or did not give me confidence In their solution or capability to choose the best solution not the easiest one or cut a hole in my roof! I don’t write up many reviews but this was an experience worth sharing. Highly recommend. You won’t be disappointed.
- Allen S....
BENNER GEOTECH
5.0
We got their information from our friend. When we were making an appointment, Mike gave us his professional advice based on the house details. They arrived on time and Mike's team is extremely professional and friendly. They did a wonderful job for us. We are really impressed and pleased with their work. Will highly recommend anyone who wants to do radon mitigation.
- Min X....
Boulder Edge Inc
5.0
Easy to work with, happy with all aspects of service. Waiting for follow up on radon levels but not expecting any issues.
- Karin S....
Radon Experts of VA LLC
5.0
Super easy and quick. Took less than 2 hours. The guys were professional, knowledgeable, and explained from beginning to end of process and what to expect. Price was competitive. Would definitely recommend Radon Experts.
- Telisha A....
Radon Experts of VA LLC
5.0
They arrived on time and performed the work quickly and left everything neat and clean upon leaving.
- Brian T....
Reliable Radon
5.0
The service man was on time, knowledgeable and completely efficient. He took care of our problem with one visit!
- Ernest M....
Radon Abatement Services
5.0
We used Radon Abatement Services for our basement. The radon levels were slightly over the EPA recommended limit. We mitigated the radon as part of a larger basement renovation. Radon Abatement Services worked with our General Contractor and did a great job. Radon levels are vastly reduced now as a result of their work.
- James H....
Reliable Radon
5.0
Ryan and his crew were here at the scheduled time - to the minute. They were courteous (yes sir, yes maam) and very efficient. When compared to other mitigation systems that i've seen, their install is cleaner and materials are of a higher quality. The install was complete in just 2 hours. I don't know what the industry standard is but that has to be fast. Ryan explained the system, its function and how to conduct the post-install test. The best part... They were able to come sooner than any other contractor, worked around our schedule and they matched the quote that we'd gotten from another company.
- J.p. T....
AdvantaClean of Frederick
1.0
AdvantaClean installed a radon mitigation system at my house. Within two years, the piping they put in on the outside of the house to vent the gas collapsed. Upon further inspection, the ~30ft., ~50lb. pipe had been affixed upright by two plastic ties screwed to the siding, and the weight of the pipe had caused the screws to tear through the thin plastic on both ties. Similar systems I've looked at in the neighborhood use lighter, metal, gutter-like pipes, and metal ties (stronger ties for lighter pipes!). When contacted, Dave (the owner) tried to get me to pay $300 to fix it, claiming that he otherwise "couldn't help me" because I couldn't reasonably expect their work to last for almost two years. He also said any kind of warranty was void because "wind damage" wasn't covered. The winds in Frederick topped out at 8mph the day it fell, but I guess he's right. It honestly WOULD be unreasonable to expect this quality of work to hold up to normal weather events (normal storms and winds in a fairly mild weather part of the country) and wear for two whole years! I'm frankly surprised it didn't fall earlier. Oh, and it took me calling AdvantaClean three times to get ahold of him (thought I was promised a call back each time!), but that's way less egregious than the whole "doing sub-par work and trying to get me to pay for it when it failed" thing.
- Sam G....
RDV Environmental Services
5.0
They were always on time, very communicative, very affordable and I would always use and recommend them.
- Alicia M....
G M D Construction INC
5.0
Very well. Mike, the president of the company, explained what needed to be done to correct our radon problem. The crew arrived on time, installed the system, explained how it all worked and left absolutely no mess behind. They arranged for a follow-up by a testing company to insure the system was working properly. Everyone involved was very knowledgeable and professional. We highly recommend this company.
- Mary T....
Radon Abatement Services
5.0
John was extremely responsive. He came out to look at the house a few hours after our first contact. He was very professional and gave us a clear quote. He answered all of our questions in a non-patronizing way. His team came out and installed the system a day early (storm-related) and were done in a few hours. No mess. Very efficient.
- Valerie W....
Radon Abatement Services
5.0
John and his employees were very professional and responsive. John scheduled the installation quickly and his his crew arrived on time and had it completed within 2 hours of their arrival. They placed the radon mitigation system right where I wanted it even though it was not the easiest location to install it in. Now all that is left to do is to conduct a post mitigation test to see if it is working properly.
- Tim B....
Radon Experts of VA LLC
5.0
Great, radon level went down from 30 to around 1.4. We had most of the system installed already, just needed some external work done.
- Rocky Y....
Radon Solutions Inc
5.0
I cannot say enough good things about how this went. During the initial phone call, I was asked a lot of questions about the living spaces, unfinished areas in the basement, etc., etc. We must have spent 15-20 minutes on the phone. Then I received their proposal, with specific information about warranties, estimated annual operating cost, etc. – the kind of information that helped me make an informed decision. The installer showed up on time and was simply awesome. He was professional, clean, and more than willing to explain what he was doing and answer my questions. It was a pleasure to have someone like that working around my home.
- Peter H....
Radon Abatement Services
5.0
They came and completed the work. The most important is that since the completion of the work I have asked John many related questions and he always answered. The questions include how to do a short term and long-term radon test. John has provided valuable answers and suggestions, which saved me a lot of time. In the past four years, we have wrote each other about 60 messages. I believe he is an excellent provider.
- Dechang C....
Boulder Edge Inc
5.0
We are very happy with Boulder Edge and warmly recommend them. The company is professional, reliable, and of high quality. Our house was difficult to handle because the vent pipe from the basement was badly hidden in the walls. Boulder Edge was patient and work through the complications. Tom and team took time to explain all actions, and next steps. In every regard we are pleased with their service and work. Our home radon level is now about 0.6!
- Keith S....

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