St. Louis Radon Testing and Mitigation

Environmental in St. Louis MO
Star Score
Average 5.0 / 5
Reviews & Ratings 362
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St. Louis Radon Testing and Mitigation is renowned for its exceptional service in ensuring home safety. Praised for their professionalism, punctuality, and quality, they specialize in both testing and installing radon mitigation systems efficiently, often meeting tight deadlines for real estate closings. Their team is celebrated for being friendly, informative, and trustworthy, often earning the confidence of homeowners to work unattended. With a reputation for thorough explanations and no upselling, they provide valuable peace of mind. Customers consistently recommend them for their responsiveness and value, highlighting the ease of installation and the expertise of technicians like Mike Perry. St. Louis Radon is the go-to expert for protecting homes from radon, with a track record of excellence and customer satisfaction.

- karen kramer - Mar 04, 2025

- CATHERINE KAGOTHO - Mar 04, 2025

So happy we had St. Louis Radon come out and put covers on our sump pumps. We were able to get answers to many questions because the staff is so knowledgeable! It’s so important to mitigate high radon levels/exposure and we highly recommend giving St. Louis Radon a call! They also have a great online store to purchase testing equipment for home use as well!

- Leslie Medrano - Jan 30, 2025

Excellent radon remediation service! I was initially worried that this would be a big and messy job, but the team from St Louis Radon were incredibly professional and did a great job with the minimum of fuss. System working great. Plus bonus watch chat!

- Simon May - Jan 27, 2025

The guys did a great job, the blue line sometimes is even, but i think maybe the weather is why, but as far as the installers they were great

- LucyLou Suchomski - Jan 25, 2025

- Adrian York - Jan 25, 2025

They provided a quick and clean install without leaving any mess. They did a professional job for us. They scheduled clearly and provided cell phone contact to their team and they were very responsive.

- Larry Jost - Jan 24, 2025

This crew took care of us from beginning to end. Very easy to work with, professional and in and out in less than a day. Thanks again.

- Brad Furfaro - Jan 22, 2025

Excellent services. Amazing work the guys do. Thanks so much.

- Joy Blair - Jan 22, 2025

Michelle was the first person I first spoke with on the phone about having our home tested for radon. She was super thorough and took the time to answer all my questions. We had a great experience with this company before, during, and after installation of our mitigation system. Would recommend!

- Robin Webb - Jan 17, 2025

The tech, Jeff, called well before arrival. He was on time and got our fan motor changed quickly. Very happy with the service!! No one ever sent me a payment link, which is a bonus 😀.

- Ben Anderson - Jan 15, 2025

Very professional and clean install

- John Lodderhose - Jan 15, 2025

We own a brick home in St. Louis built in 1908 with the original stone foundation and had a number of concerns when we engaged St. Louis Radon to mitigate our basement radon issue: could they design a solution that reduced the level of radon to acceptable levels given the condition of our basement floor and stone walls? Would the solution stand out like a sore thumb on the exterior wall of our 3 story house in such a beautiful old neighborhood with tree lined streets? Would the pipe runs in the basement get in the way of our laundry, home gym and workshop areas further reducing the headroom or taking up valuable floor space? On all 3 concerns we are extremely satisfied. The exterior vertical run required going through 3 courses of brick over a hundred years old to reach the outside wall of the building where there is a mature hedge owned by our neighbor right in the way of where the fan was installed and a ladder had to be placed for the vertical pipe install up beyond the roof line. So the piping and fan work was not easy for them while minimizing the pruning of the neighbor’s hedge and working in such a confined space both inside and out. But by placing it there the whole system almost disappears for anyone outside the basement (we will probably paint the pipe black to match our gutters next time we paint exterior trim and the fan just disappears behind the hedge). On the basement laundry room area the solution just blends in along with our existing plumbing stack taking up no additional floor or overhead space. They were quick to provide an online quote and estimated install date, prompt on arrival on both day of install and day to pickup test equipment and provided fast formal results next business day. We are so happy that our problem is resolved and would be glad to work with any member of their team again in the future whether this house or any other we own in the St. Louis area: highly recommend!

- David Gray - Dec 30, 2024

Tested for radon levels and subsequently installed a mitigation system. Technicians and installers were courteous, knowledgeable, and timely. All steps of the process were well-explained and any questions we had were answered. Would recommend to anyone looking for high quality radon testing and management.

- Andrew Elvington - Dec 30, 2024

Mike and his team went out of their way to work us into their schedule, and did a great job for us.

- David Voloto - Dec 17, 2024

- Michael Tristeza - Dec 11, 2024

We have had Radon mitigation system installed twice with them and both times we have had great experiences. They were booked out till February but Michelle accommodated us as soon as they had a cancellation and expedited the installation for us.

- Mendu harika rao - Nov 30, 2024

Excellent service, friendly and knowledgeable technicians.

- scott dressel - Nov 27, 2024

Positive in all facets - The installers of my system did a first class job. They were friendly and the work is outstanding. The staff at St. Louis Radon were pleasant and easy to work with.

- GRW - - Nov 14, 2024

Great company to work with! They were here when they said - did the work they stated and did a clean and professional installation. We are very pleased with the results!

- R Moore - Nov 14, 2024

Communicated which system would be the best option for us and the advantages/disadvantages of both. I appreciated the follow up testing to ensure Radon levels were in the safe range.

- Jeni Stamburski - Nov 10, 2024

They were hassle free, fast, and friendly! Highly reccomend.

- Sarah Watkins - Oct 30, 2024

We were extremely pleased with St. Louis Radon from the day of contacting them to explanation and timing of installation and their follow up. The install was trouble free and follow up test was extremely successful. We are breathing confidently now. Thanks to ST. Louis Radon.

- Bob Eves - Oct 29, 2024

- Karen Barrett - Oct 29, 2024

Very happy with your business. Mark was very organized and right on time. Didn't have to wait on Mark he was there at the time he schedule. Very nice and respectful man. Thanks Mark

- Ruby Ries - Oct 23, 2024

Very nice man who did the install, knew what he was doing and knew all about the process and the product, his helper was a nice guy also, very good job ,we are glad St . Louis Radon did the work, we highly recommend them .thank you

- Jim Keck - Oct 21, 2024

Very responsive and helpful. They came when they said they would and completed the job very professionally.

- Craig B - Oct 21, 2024

Mike who set up the test is polite and pleasant to communicate with. Office staff is helpful and easy to get hold of.

- p p - Oct 16, 2024

This company was professional, detailed and very informative. The team that came to install the system was also professional and explained everything they were doing and what would happen moving forward. Highly recommend.

- Sara Jane Rybarczyk - Oct 01, 2024

The job was done well and quick. Dropped our radon levels from 4-9 all the way down to

- Matthew Crisp - Sep 29, 2024

St Louis Radons testing, installation assessment, and then the installation itself of our mitigation system was excellent. I highly recommend them if you need radon resting or mitigation!

- Jeff Pitts - Sep 27, 2024

St. Louis Radon was great to work with. They got our radon numbers under control with the mitigation. The installers were very nice and cleaned up everything when they were finished. If you need radon mitigation, I highly recommend St. Louis Radon to take care of it.

- Diane Lackey - Sep 15, 2024

STL Radon did a great job installing a radon mitigation system at my home. They are easy to work with and provide top quality service. Thank you STL Radon!

- Alex Seligsohn - Aug 12, 2024

- Andrea Dunn - Aug 02, 2024

- Michelle Autry - Jul 31, 2024

Part of the pre-sale inspection of our house included radon testing by St. Louis Radon. The average was below the point at which mitigation would have been necessary but too high for our comfort, so we had them come back and put in a mitigation system at our expense. Turns out there weren't a lot of options for placement, but the techs took their time to find the best option. The results were beyond our expectations, and the peace of mind is worth every penny (and it really wasn't all that expensive). I can't say enough good things about this company.

- Karen Collier - Jul 17, 2024

Excellent customer service. The install guy was very professional and cleaned up nicely afterwards. Overall, great experience.

- Beth Daniels - Jul 12, 2024

- David Tabagari - Jun 22, 2024

Quick, easy and the chepeast quote I was given. My radon level was at 7.1 and was brought to under 1. Would use again in the future & recommend to all friends!

- amina karabegovic - Jun 19, 2024

St. Louis Radon did a wonderful job! They were quick to respond and schedule the service. When it came time to install, the technicians were on-time, easy to work with, quick, and knowledgeable. The follow up communication was great as well. They provide a high value service at a reasonable cost. I would highly recommend!

- Jeremy Flagg - Jun 17, 2024

We were very pleased with the testing and installation process. Prior to installing the mitigation equipment, the technicians ensured the location would be the most effective and also the least intrusive to our home. We highly recommend St. Louis Radon!

- Rick Lister - Jun 13, 2024

I can’t express enough how happy I am with my radon mitigation.system. My installer and his assistant were awesome. They were ver courteous, polite and professional. They informed me about the process and got permission for everything before completing the work. The location and placement of my system was agreed upon and looks very nice. My encounter with the staff via phone call, email, drop off and pick up of monitoring devices were also pleasant and professional, they are truly a team. The price was very reasonable. I would most definitely recommend this company to anyone who needs mitigation testing or systems.
Thanks St. Louis Radon

- Aminah Chambers - Jun 11, 2024

Awesome team and very professional. Not a single trash left and very friendly.

- The Amazing World - Jun 09, 2024

The process from start to finish was very professional and I could not of had a better installer. Victor did a very professional installation. Thank You Victor and St Louis Radon.

- Mike Pearson - May 31, 2024

The men were friendly and polite when installed the Radon in my home. They asked permission before doing anything that need to be done. I recommended the company to anyone that need service or testing.

- Patricia Murray - May 23, 2024

Friendly people, helped me get a system installed on my home before move-in and dropped high radon levels down to atmospheric.

- Stephen Bresson - May 23, 2024

very helpful, reliable technicians. Explained everything to me. Never had even heard of radon detection, but the home inspection indicated it was higher than it should be. they did a great job.

- CAROL HOLMES - May 16, 2024

St. Louis Radon was great from start to finish! We were admittedly uneducated about how to mitigate a clear radon problem in a property that already had a mitigation system in place. SLR was very flexible in the timing of setting the testing device, and then in getting us scheduled for technicians to come to evaluate the system once the high levels were determined and confirmed. When they arrived, they assessed the system very quickly and came up with a reasonable solution for us. They were friendly and took a great deal of patience in answering my questions, as well as suggesting solutions for now and for the future! Don't fall for the temptation to use another individual or company because of price or any other reason. It'll cost you more in the long run. Trust me! Choose St. Louis Radon first! You'll be very happy you did! I sure am!

- Tim Lyons - Jan 09, 2024

- Mike B. - Jan 06, 2024

Honest, Straightforward, Efficient, Affordable.
Everyone was very responsive. Technicians were very knowledgeable and took the time to engage and answer our detailed questions, and explain how the system installation is designed, and how the system works. They were on time for each appointment and completed the work during the pre-scheduled amount of time. Our radon mitigation system was very affordably priced. The reduction in our radon levels after installation have been even better than we'd anticipated. We're very happy with St. Louis Radon and highly recommend them!

- Rinah Messier - Jan 04, 2024

- Justin King - Jan 03, 2024

- Bill Kreutzman - Jan 03, 2024

Great customer service!

- Zach Pashea - Dec 31, 2023

The team was great! It was a smooth and easy process.

- Alejandra Torres - Dec 15, 2023

All were professional. All courteous
Took time to answer my questions. And to explain process

- Carrol Lee Schilly - Dec 07, 2023

- Ruth Grace - Dec 01, 2023

The original installation was going good until the installer cut a electrical wire. Had to wait for an Electricion to repair the cut wire.
I was responsible for half the cost of the electrical work.
I was rescheduled to finish the installation. Finally the install was completed. The finished job looked good. Installers forgot to install the critter cap. Returned the following day to install and pickup the two radon meters. Randon meters read .07 which was below the original readings of 5.0
Overall I was satisfied with the installation.

- Robert Zuniga - Nov 28, 2023

- Adna Djelmo - Nov 02, 2023

I don’t ever post reviews but after having lackluster experience with other companies who probably didn’t want to deal with our complex house I can say these guys were so great. We had Mike and he went above and beyond for us. Honestly couldn’t have been happier with him I hope he sees this, Mike you’re AWESOME!

- Corey Hogrefe - Oct 28, 2023

Our two technicians called and arrived promptly on the scheduled day. Mike walked me through the entire process before they started and answered all of my questions. It took roughly 3 hours for my radon fan to be installed. They did an excellent job with the install. You can't even tell they disturbed the concrete to install the piping. I would highly recommend them to anyone needing a radon unit.

- Estrellita Trejo - Oct 23, 2023

St Louis Radon was prompt, considerate and very professional. The equipment installed lowered our reading more than 3 points in a few days.

- Joan Marie Burger - Oct 18, 2023

They were here on time and did excellent work. They left my basement cleaner than it was when they arrived. All the equipment was well placed and looked amazing after completion. It was very evident that they take pride in their work which is hard to find these days. It’s hard to find contractors these days for any kind of work. I would recommend them a hundred times over!

- Ben Rawlins - Sep 30, 2023

- Mike Valenta - Sep 28, 2023

StLouis Radon is a super company with awesome and conscientious employees They performed the installation efficiently and professionally and explained every step of the process as well as how to monitor the equipment Super fine job with quality workmanship They treated our home as if it was their own Thank you StLouis Radon I highly recommend their services

- ROBERT J GORMAN - Sep 27, 2023

John and Ben did a very good job installing the radon mitigation system. They were on time, courteous, and were done within 4 hours of arrival. John explained the process and gave us information regarding about how the system worked and that it should work even with the basement waterproofing that we had recently had done. I had previously purchased a radon monitor online and had been tracking the radon levels in our basement for 4 weeks prior to the installation so that I could determine if the mitigation had an impact. The device I purchased reflected the same levels that were found when we had a professional service do radon testing when we bought the home 2 months ago, so I believe that the monitor works as it should. Within 44 hours of turning on the fan, our level went from 16+ down to 1.01. So I believe that the mitigation is working as it should be. My only advise is to do a measurable amount of consideration about the location of the fan and size of fan. We decided on a larger fan due to the levels of radon that had been detected and due to the type of waterproofing that we had done. As it was, the fan was installed in the corner of the basement just outside of the master bedroom and the sound level is just a bit more than we expected. I now wonder if the pipe to the outside should have been done by drilling a hole in the foundation wall rather that the joist on top of the foundation wall (that is the way our sump pump is installed). My thought is that part of the sound might be due to vibration on wood rather than concrete. I recommend this business for your radon needs, but make sure you take these kinds of things into account before installation.

- Gary L - Sep 16, 2023

Fast, quick & efficient

- Don Post - Sep 14, 2023

The gentleman very efficiently installed a high-quality radon mitigation system that ended up with an amazingly low radon level in the house. The gentleman went the extra mile to seal up the tiny gap between our concrete wall and concrete floor.

- Cathy Ruczko - Sep 03, 2023

- EDBOWLLU - Aug 24, 2023

My radon readings were hovering right around 4. Now they're consistently under 1. The installers were on time, did an excellent job, and explained everything to me before they left. The installation is clean and has been working perfectly for the last month. I highly recommend this business.

- Craig von Collenberg - Aug 21, 2023

- M Ftz - Aug 12, 2023

- Linda Stein - Aug 05, 2023

The installers did a very good job. The work met are expectations. The radon level went from 8.1 to .7.

- John Balog - Jul 26, 2023

Answered the phones right away. Got me scheduled right away. They were very informative. Affordable pricing. The guys who came out for installation and pick up were very friendly! Would highly recommend!

- Nicole Heafner - Jul 20, 2023

Positive: Professionalism, Quality, Responsiveness, Value
quality work! nice customers service! very professional.

- G Tech - Jul 09, 2023

Excellent install and explanation of work to be performed and why. I'd recommend them!!

- Christina Ritter - Jul 06, 2023

Very knowledgeable and professional people in this line of business. Highly recommended for Radon related issues.

- Prabhu N - Jun 30, 2023

They were super friendly and efficient!

- Allison Rothermich - Jun 17, 2023

Both of the employees that came out were super professional and did an excellent job. They labeled all their wires clearly, put the vent and piping in a perfect spot on our house that is out of sight. And most importantly the radon level in our basement now reads 0.02. highly recommend

- Samuel Bell - Jun 16, 2023

Discussed alternatives, neat, efficient, thoroughly sealed accessible gaps, selected quiet Radon fan, implemented exhaust stack above roof line, neat wire connection. The Radon Mitigation Works great! The basement air is now safe for the kids.

- Kevin Darby - Jun 15, 2023

I highly recommend st.louis radon to anyone needing a radon system installed. They was so quick, professional, courteous, and cleaned up very well. 10 out of 10!

- Robin Jablonski - May 26, 2023

Vic and Mike did a fabulous job installing our itigation system.

- P Herrell - May 25, 2023

St. Louis Radon did a remarkable job, scheduled quickly, communicated throughout process and completed a professional job!

- Janet Zerler - Apr 21, 2023

This company is awesome to work with. They reach out to you every step of the way, and always get back promptly if you have questions. They were very professional and on time for each job. Would recommend them to anyone.

- Adam Onica - Apr 11, 2023

They were very professional and showed up on time. I would highly recommend St Louis Radon.

- Patty Delworth - Mar 28, 2023

Positive: Professionalism, Responsiveness

- Linda Mcdale - Feb 24, 2023

Positive: Professionalism, Quality

Perhaps a difficult installation, but handled professionally and meticulously by Mike.
Very effective radon reduction.

- David Lickerman - Feb 19, 2023

Fantastic work, crew was professional, on time and worked fast.

- Tony Guy - Feb 16, 2023

St. Louis Radon is one of the best companies are I ever had to deal with. They are very professional and they do a great job at a reasonable price. I will definitely be using them again in the future.

- Rick Lackey - Feb 16, 2023

Positive: Professionalism, Quality, Responsiveness, Value

St. Louis Radon was great - did an excellent job, and when we found out we had asbestos elsewhere, we began to test the whole house. St. Louis Radon quickly responded and let us know they hadn’t drilled through the suspect material. We wound up being clear, but it was a relief to know they did such a great job AND were careful and responsive. Can’t recommend highly enough.

- Brandon Burd - Feb 10, 2023

Positive: Professionalism, Quality, Responsiveness, Value
The total process was very pleasant.
The installation was performed by John and Ben. Every question I had, was answered in a professional manner. Thank you very much.

- Noemi Melloy - Feb 05, 2023

Positive: Quality
They were quick, efficient and very professional. My radon levels dropped in the basement from the mid 8pCi/L to less than 1pCi/L within 24 hours of the system being installed. The system looks very professional as well. I recommend STLRadon to anyone looking for a system put in.

- Devin Cargill - Feb 02, 2023

Positive: Professionalism, Quality, Responsiveness, Value

Thank you so much guys! I have used you for the many years for my Real Estate Clients and this time I was the client! You guys provided me the same wonderful experience and customer service you provide each of my clients. Thank you for a great job as always. Regards Nicki Moss, Realtor, Worth Clark Realty and Client!

- Nicki Moss - Jan 30, 2023

I cannot say enough about how happy I was with St Louis Radon. Michelle was always responsive in her emails and I applaud her for her patience in dealing with me until I was ready to pull the trigger. Their techs seemed top notch to me and walked me through all the options. I wanted the pipe to go through the roof instead of around the soffit and gutter and they did an excellent job. System was installed on 1/16 and the results speak for themselves.

- Jeff Alexander - Jan 27, 2023

St. Louis Radon did a great job installing a new system in our house. The onsite techs and back office was great to work with. Very honest and straight forward people. I will definitely use them again if needed.

- Daniel Kloeppel - Jan 11, 2023

Excellent experience with everyone from St. Louis Radon. And Radon levels are all good now!

- Jessica Selby - Jan 06, 2023

Positive: Professionalism, Quality, Responsiveness, Value

St Louis Radon did a fantastic job, and were done so quickly. Would highly recommend their services and will definitely give them a call again if we ever move.

- Maureen Holzem - Dec 22, 2022

Positive: Professionalism, Responsiveness
Did an outstanding job, very clean when done as well!

- Robin Coots - Dec 19, 2022

I was very pleased with how fast they were able to help me, thank you so much for making sure my closing happened on time.

- Kevin Dairaghi - Dec 15, 2022

The employees were very courteous and professional. They were on time and completed work completely and quickly.

- Carolyn Gass - Dec 13, 2022

These folks are total professionals. My experience with them rates 5 stars, in every aspect.

- Michael Durham - Dec 09, 2022

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St. Louis Radon Testing and Mitigation | 8661 Grant Road, St. Louis MO 63123, United States