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

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

Serving Crownsville, 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."
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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 Crownsville, MD and surrounding areas

Approved

In business since 1997

Free estimates

Customers say: Quick response

"After my basement test come back with significantly elevated radon, I contacted radon abatement services at the recommendation of a neighbor. A day and a half later, they were on site. While performing the initial walk through, the experienced and thoughtful professionals adapted their plan to utilize my sump pump. This was an effective strategy as it addressed the main source of radon and concealed the system in completely unfinished space. I just received my post mitigation radon results, and the system is working phenomenally. To sum it up, I was blown away by the responsiveness, thoughtfulness, and reasonableness and can't say enough positive things about this company. I don't ever post reviews, but in this circumstance I absolutely had to."
11 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Vespene Radon Testing
Vespene Radon Testing
5.0(
3
)
Radon Gas - Testing

Serving Crownsville, MD and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"I used Vespene Radon Testing earlier this year and was very satisfied with the experience from start to finish. They were punctual, professional, and very knowledgeable on all things radon testing. Results came back quickly, which mattered to me as a parent of a young child. Having reliable data in hand promptly gave me confidence that our home was safe. I would definitely use them again for any of my radon testing needs ."
Radon Test Equipment
1 neighbors recently requested a quote
Avatar for D & H Demolition, LLC
D & H Demolition, LLC
5.0(
11
)
Radon Gas - Testing

Serving Crownsville, 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 Atlantic Radon
Atlantic Radon
5.0(
63
)
Radon Gas - AbatementRadon Gas - Testing

Serving Crownsville, MD and surrounding areas

In business since 2017

Free estimates

"We needed the fan replaced on our radon mitigation system. Atlantic Radon responded quickly, confirmed appointment time, called to see if he could arrive early (which he did), had the appropriate replacement for our 32 year old unit, and completed the job in a short time. The "tech" was the owner - pleasant, knowledgeable, easy to work with. Recommend Atlantic highly."
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
Geo tech radon
5.0(
16
)
Radon Gas - AbatementRadon Gas - Testing

Serving Crownsville, MD and surrounding areas

In business since 1998

"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."
Recommended by93%of homeowners
Avatar for Radon Resolvers, LLC
Radon Resolvers, LLC
4.7(
30
)
Radon Gas - Abatement

Serving Crownsville, MD and surrounding areas

In business since 2019

Free estimates

Credit card accepted

"Very friendly, professional crew from the local area. I got the quote from Peter and had the system installed within a week. Very clean and solid installation. Time will tell how effective it is (still need to wait 48 hours to test the radon levels again) but I'm able to hear the fan through the drain (they covered the grate with a one-way drain) at the opposite corner of the house so it's definitely getting good coverage. No issues at all, I'd recommend them to anyone with either high radon levels or those just trying to reduce the radon levels in their living space!"
Response time1 day
Recommended by96%of homeowners
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Radon Detection and Reduction FAQs, answered by experts

Installation typically takes 1-2 days, depending on the system and property layout.

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.

You'll need to test your home for radon after installing the mitigation system, then again every two years. If radon remains elevated, contact a licensed radon professional, either the contractor who installed the system or a different one, and have them evaluate the system. They may need to make some changes to improve its effectiveness and performance.

Use a radon test kit or hire professionals to conduct a detailed assessment of radon levels in your home.

Your radon fan needs to operate 24/7 to be effective. The only time the fan isn't operating is during its replacement. Radon levels in the home can increase within hours if the fan stops working or something obstructs the stack vent. Fortunately, radon systems require no downtime maintenance between fan changes.

The Crownsville, 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.