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*The Angi rating for Radon Detection And Reduction companies in Saint Charles, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

*The HomeAdvisor rating for Radon Detection And Reduction companies in Saint Charles, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

Last update on July 15, 2024

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

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

Serving Saint Charles, MD and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"Radon Abatement services is a reliable dependable superb company. I have had an excellent experience from start to finish. Scheduling was easy and expeditious, service was professionally and very well done. Most importantly, Radon is gone with its in-house level reduced to almost its outside level. John Swett was very helpful and kindly answered all my emails and quickly addressed every concern I had. This project could not have been done better."
Additional Photos
1 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for Radon Abatement Services, LLC
Radon Abatement Services, LLC
4.6(
135
)
Radon Gas - Abatement

Serving Saint Charles, 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."
12 neighbors recently requested a quote
Recommended by98%of homeowners
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Avatar for NextDay Inspect
NextDay Inspect
4.9(
519
)
Radon Gas - Testing

Serving Saint Charles, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Emergency services offered

"We needed to get a radon test. The process was very easy to get scheduled. They were very professional. We will definitely use them again for any other inspections."
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%
3 neighbors recently requested a quote
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Avatar for NextDay Inspect®
NextDay Inspect®
4.9(
689
)
Radon Gas - Testing

Serving Saint Charles, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Emergency services offered

"I had a Radon Test performed. Customer Service was great! Sonya was great! She was always on time and I received the report in a timely manner."
Radon Testing by NextDay Inspect®
Appliance Testing
Building Inspection
Thumbtack Top Pro 2019
Certified Master Inspector

+378

Response time3 hrs
Response rate98%
22 neighbors recently requested a quote
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Avatar for ANALYTIC HOME INSPECTIONS LLC
ANALYTIC HOME INSPECTIONS LLC
4.9(
16
)
Radon Gas - Testing

Serving Saint Charles, MD and surrounding areas

Approved

Free estimates

Warranties offered

Small jobs welcome

"Yes, but I have lost the papers and the results of the completion of the anti-termite work which I need for a VA refi"
En Route
En Route
En Route
En Route
En Route

+14

44 neighbors recently requested a quote
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Avatar for Mid Atlantic
Mid Atlantic
4.9(
18
)
Radon Gas - Testing

Serving Saint Charles, 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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Avatar for SWAT Environmental
SWAT Environmental
4.1(
91
)
Radon Gas - Abatement

Serving Saint Charles, MD and surrounding areas

In business since 1988

Free estimates

Credit card accepted

"Mark did great work and made the radon abatement system blend well with the house. The office response time was slower than I would have liked, but the price and quality of work was worth the wait. All of the people I interfaced with were extremely helpful and nice. I would highly recommend this company."
Response time1 day
Recommended by90%of homeowners
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Avatar for Jones Home Inspection
Jones Home Inspection
4.9(
19
)
Radon Gas - Testing

Serving Saint Charles, MD and surrounding areas

In business since 2020

Warranties offered

Small jobs welcome

"Great customer service and customer care. Love the inspection book, with all the details and pictures of what is needed. I will recommend this company to anyone who needs a home inspection."
Easy and confined set up
High levels of radon detected
Testing in progress
Testing in progress
Home Inspection

+33

Response time7 hrs
Response rate87%
Recommended by93%of homeowners
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Showing 1-10 of 32
Radon Detection and Reduction FAQs, answered by experts

If your home has a sump pit, you can integrate it with a radon mitigation system. You can accomplish this by sealing the pump cover with an airtight lid that accommodates radon vent pipes and sump pump hoses. This allows the vent pipe to redirect the radon gas outside of your home.

The soil beneath your house is most likely what’s causing an increased level of radon. This is because soil holds radioactivity for a long time and it’s also what most buildings are built on. Another common source of radon is water from a source that hasn’t been through periodic radon tests, such as well water. Over time, the radon from the soil can inhabit other parts of your house like the foundation or plumbing.

Your radon mitigation system may be loud because it’s time to replace it. Any sounds are usually from the inline fan that helps create the vacuum and resulting airflow. If you hear a new, loud mechanical or humming noise from your radon fan, it might be time to replace it. Most fans used in radon mitigation systems last up to 10 years, but may need to be replaced sooner.

Radon enters your home when warm air begins to rise and exits through the roof, creating a vacuum that pulls cooler air from under the foundation. Part of that air is radon, which is an invisible, odorless gas that develops naturally when radioactive particles are deep within the ground. Those particles usually come from decaying matter in soil and rocks.

The natural breakdown of uranium in soil, rock, and water can cause radon to appear in a home. The gas seeps into homes through cracks in foundations, walls, or floors, as well as through gaps around pipes or construction joints. Radon levels are influenced by soil composition, building materials, and ventilation. Poorly sealed or airtight homes can trap radon, allowing it to accumulate.

The Saint Charles, 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.

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