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....
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....
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 (....
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....
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....
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....
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....
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 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
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....
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
Mike and team were very knowledgeable and patiently answered all of my questions (and I always have a lot of them when dealing with contractors). They know their stuff and didn’t oversell or make false promises. I already had a mitigation system in place over my sump pit that came with the house, but it wasn’t adequate to service the multiple slabs that make up my foundation. Mike suggested a stepped approach to deal with the “hot spots” in the house and then re-assess whether additional action was necessary. They installed a clear lid over my sump and fixed the trap in my pit so that the existing fan was actually pulling suction on the foundation (and not the open drain from my exterior stairs). They also installed a second system that serviced two slabs and vented out through the back of the roof. Finally, they sealed up some cracks and holes around the foundations. Mike found a solution that was sensible from an aesthetics perspective as well as functional. The pipe runs through my entryway closet, and is as hidden and cleanly installed as I could have hoped for. We had a difference in opinion on how the finished roof flashing should have been done (more from an aesthetics perspective), but it’s on the back of the house behind the chimney so I wasn’t overly concerned about it. The system has reduced my levels to around 1pc/l down from a previous average of about 8 pc/l. So definitely within acceptable levels. I’m only a month in, so will continue to monitor over the next year to determine if any seasonal impacts require further action. I would definitely recommend them and plan to use them again if I need to (although I hope I don’t have to). If you are looking at this and don’t have your own continuous radon monitor, I recommend picking one up.
- Carl E....
Radon Installation Contractors LLC
5.0
My Agent & I were very pleased with Ric's professionalism. It's a pleasure working with someone that is neat and well organized! His perfectionism shows in the quality of his work. Going forward we will recommend him to anyone that's looking for this type of service.
- Su W....
Radon Experts of VA LLC
5.0
Both guys were very professional and did excellent and clean work installing the radon mitigation system.
- Vikram M....
(202) 667-0707 SWAT Radon Mitigtn Washington D.C.
2.0
Poor communication and poor customer service. Worker was unprofessional (using inappropriate language; talking on phone) - I have children so this was much more of an issue that it otherwise would've been. There was no communication about the work to be completed (other than a basic sketch that didn't provide much context). I had no idea there would be a huge, unsightly monstrosity installed in a very visible portion of the back of my house. (The man said he probably could've put it elsewhere, but he basically took the easiest path (and didn't consult with me about it). Poor clean-up of job site; worker left behind a couple of large pieces of PVC. When I called to have the materials picked up, it became clear that they have a terrible customer service department and seem to not really care. I called and didn't receive a callback within 24 hours so I called again. Finally they said they could have someone pick up the materials the next day (which makes it three days after the job was completed). I emailed my agent and asked her to reconsider recommending SWAT to future customers. Everything about this experience is highly unacceptable.
- Chintimini K....
Radon Abatement Services
5.0
Great guys - best contractors that I have worked with in years. They arrived on time, explained what need to be done, answered our questions and cleaned up before they left. I'd recommend Walter, the team leader, to anyone in need of radon repair.
- Arthur T....
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....
Radon Experts of VA LLC
5.0
I needed work done quickly due to a pending sale. They showed up on time and did everything in a very professional manner. I was very pleased with the company and how they handled the installation.
- Richard P....
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....

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