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Top-Rated Radon detection and reduction specialists in Rosaryville - Updated Nov 2026

Avatar for Radon Abatement Services
Radon Abatement Services
4.9(
257
)
Radon Gas - Abatement

Serving Rosaryville, MD and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"I used Radon Abetment Services LLC to install a radon system in my basement. John and his team were excellent and I highly recommend them to anybody with this need. John was able via video over phone identify where the system should go. His team was extremely professional and courteous. The installation took a day and the improvement in radon levels was remarkable. We would absolutely use them again."
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1 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Radon Abatement Services, LLC
Radon Abatement Services, LLC
4.6(
135
)
Radon Gas - Abatement

Serving Rosaryville, MD and surrounding areas

Approved

In business since 1997

Free estimates

Customers say: Quick response

"I'm completely satisfied with the work that John's team did. They were extremely professional and knowledgeable. The workmanship is superb. Best of all, the system works as promised and reduced the radon concentration based on subsequent tests. I could not recommend them more highly."
11 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for NextDay Inspect
NextDay Inspect
4.9(
515
)
Radon Gas - Testing

Serving Rosaryville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Emergency services offered

"Excellent Water/Well Testing Service from NextDay Inspect – Highly Recommend! I recently had a water/well test done by NextDay Inspect, and I couldn’t be more satisfied with the entire process. From scheduling the appointment to receiving the results, everything was seamless and professional. Sonya, the inspector who came out, was amazing. She was punctual, thorough, and took the time to explain the entire testing process. She made sure I understood what was being tested and why, which gave me confidence in the results. The whole experience was smooth and stress-free, and I really appreciated how well everything was organized. The results were delivered quickly, and NextDay followed up to make sure I had all the information I needed. I can confidently say that NextDay Inspect provides top-tier service, and I highly recommend them for anyone needing water/well testing."
Inspections with Matthew
Inspections with Larry
Inspections with Dimitri
Inspections with Rhonda
Cracks in the Foundation- Here we find moderate cracks in the foundation, with evidence that they've been repaired before.

+738

Response time8 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for D & H Demolition, LLC
D & H Demolition, LLC
5.0(
11
)
Radon Gas - Testing

Serving Rosaryville, MD and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

Leading the industry by providing a comprehensive service to residential & commercial clients in need of selective & structural demolition , hazardous material abatement and disposal , as well as mold remediation services. Call or click for your FREE estimate today!\n

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+9

Response time8 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for 911 Restoration by Germain Brothers LLC
911 Restoration by Germain Brothers LLC
New to Angi
Radon Gas - Testing

Serving Rosaryville, MD and surrounding areas

Approved

In business since 2016

Free estimates

Warranties offered

At 911 Restoration by Germain Brothers LLC, we specialize in comprehensive disaster restoration services. Our team is dedicated to safeguarding homes and businesses from the damaging effects of mold, water, fires and storms. Here’s what sets us apart:\n\nMold Remediation: Our certified experts assess and isolate mold contamination, ensuring thorough removal and preventing further spore spread. We identify the root cause, devise effective solutions, and prioritize your safety.\nWater Removal and Storm Damage Restoration: When water wreaks havoc due to storms or other incidents, we’re here to help. Our 24/7 emergency response team swiftly tackles water extraction, drying, and structural repairs.\n\nComprehensive Services: Beyond mold and water remediation, we handle storm and fire damage repairs, as well as basement flood cleanup\nChoose 911 Restoration by Germain Brothers LLC for reliable, efficient, and compassionate restoration services. We’re committed to restoring peace of mind and protecting your property.

2 neighbors recently requested a quote
Avatar for Atlantic Radon
Atlantic Radon
5.0(
63
)
Radon Gas - AbatementRadon Gas - Testing

Serving Rosaryville, MD and surrounding areas

In business since 2017

Free estimates

"Atlantic Radon has done an excellent job to install a radon fan in our new house passive radon system and reduced the radon level in our basement by 75% to the lowest possible rate. Tom is very knowledgable and honest guy to have as a service contractor to insatll any Radon mitigation system at affordable cost in a timely manner."
High Performance Radon Mitigation System
High Performance Radon Mitigation System
High Performance Radon Mitigation System
Installation of exhaust
Response time8 hrs
Response rate88%
Recommended by100%of homeowners
Avatar for Mid Atlantic
Mid Atlantic
4.9(
18
)
Radon Gas - Testing

Serving Rosaryville, MD and surrounding areas

In business since 1985

Free estimates

Emergency services offered

"Chris was WONDERFUL! I just purchased a home and wanted to have a mold inspection done for peace of mind. Chris took time to explain the process and put my fears at ease with his vast knowledge. He reviewed the test results with me prior to closing which gave me the peace of mind I needed to confirm I was making a good purchase and great investment. I highly recommend Mid Atlantic Commercial Residential Real Estate Solutions. VERY PROFESSIONAL AND COURTEOUS!!"
Crawl Space
Crawl Space
Crawl Space
Crawl Space
Recommended by100%of homeowners
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Radon Detection and Reduction FAQs, answered by experts

Radon is the number one non-smoking cause of lung cancer in the United States, but it can cause some other concerning side effects in the meantime. If you have a raspy voice, chest pains, trouble breathing, difficulty swallowing, or any of the above, don’t hesitate to perform radon testing and install a mitigation system as soon as possible.

No level of radon is technically safe, but since it is present everywhere, complete avoidance is impossible. The average radon level in homes across the United States is 1.3 picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends taking preventative measures if your home's radon levels are between 2 and 4 pCi/L or higher.

Ideally, no one will live in a house with elevated radon levels, as prolonged exposure increases the risk of serious health issues like lung cancer. However, homes with radon can be made safe through mitigation systems, such as active soil depressurization. Testing for radon regularly and addressing high levels helps ensure a safe living environment.

The lifespan of a radon mitigation system depends on the type of system and its maintenance. With proper care, a system can last for many decades. Passive systems tend to last longer as they have fewer components that require replacement. Active systems, which have more moving parts like fans, generally have a shorter lifespan. For instance, water filtration devices and active pressurization systems require more frequent maintenance. While the system as a whole is durable, the radon fan in an active system typically has a lifespan of 5 to 10 years and will need to be replaced. As long as the fan is working, the mitigation system should function correctly.

Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter. 

Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.

The Rosaryville, MD homeowners’ guide to radon detection and reduction services

From average costs to expert advice, get all the answers you need to get your job done.