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*The Angi rating for Radon Detection And Reduction companies in Friendsville, 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 Friendsville, 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 October 06, 2026

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

County Large Home Inspections
4.5(
58
)
Radon Gas - Testing

Serving Friendsville, MD and surrounding areas

Approved

In business since 1999

Free estimates

Customers say: Quick response

"Wonderful service from start to finish! They repeated a radon test and got quite a different reading than the building inspector who apparently did not place the canisters appropriately I thank Ted for saving us from the radon risk. Highly recommend and very professional"
Response time10 mins
Recommended by90%of homeowners
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Avatar for SWAT Environmental
SWAT Environmental
4.1(
91
)
Radon Gas - Abatement

Serving Friendsville, MD and surrounding areas

In business since 1988

Free estimates

Credit card accepted

"I was very pleased with the service and work done by SWAT environmental. Lance was very helpful in explaining the process when he booked my appointment and the two techs who installed the radon remediation system were professional and courteous. The system itself isn't inconspicuous but I feel safer knowing that our radon levels are significantly lower now."
Response time1 day
Recommended by90%of homeowners
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Avatar for Glen's Home Inspections - Facebook
Glen's Home Inspections - Facebook
New to Angi
Radon Gas - Testing

Serving Friendsville, MD and surrounding areas

In business since 2010

Free estimates

Credit card accepted

Our company is based on the belief that our customer's needs are of the utmost importance. Glen's Home Inspections is committed to meeting those needs. As a result, a high percentage of our business is from repeat customers and referrals.

Rotted Sub Flooring
Improper Furnace Flue
Roof Ridge Seperation
Roof Structure Failing
Comprimised Main Structure Support

+21

Response time3 hrs
Response rate100%
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District Home Inspectors, LLC.
New to Angi
Radon Gas - Testing

Serving Friendsville, MD and surrounding areas

In business since 2017

Free estimates

Credit card accepted

Welcome to District Home Inspectors. We are the premier professional Inspection company in Maryland. We offer the highest quality and most attentive customer service. We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Whether your project involves minor evaluations or complete inspections, we are glad to be your number one choice. Please call us today to schedule your appointment!

Response time40 mins
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F .Y .T. Group, Inc.
0.0(
1
)
Radon Gas - AbatementRadon Gas - Testing

Serving Friendsville, MD and surrounding areas

In business since 2002

Francis has over 10 years of experience in providing service for both residential and commercial clients. He has a specialized education in his field to ensure your safety with high quality, professional analysis. Since Francis personally monitors each project, you can count on a thorough and meticulous job, with the highest quality available. Customer satisfaction is guaranteed, and you may expect competitive pricing without compromising on quality or safety. Give Francis a call today. He proudly serves the D.C. Metro area.

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Radon Detection and Reduction FAQs, answered by experts

The cost for a radon mitigation system typically ranges from $800 to $1,500, with an average around $1,000. The final price depends on several factors, including the size of your home, the severity of the radon issue, and the type of system required. Your home's foundation type also significantly impacts the cost. For example, sealing and ventilating an unfinished basement might cost around $4,600, while encapsulating a crawl space without a foundation slab can range from $1,500 to $15,000.

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.

Many radon fans carry a five-year manufacturer's warranty. That said, your radon fan should last between five and ten years. Regular inspections will ensure the fan is operating properly. Unusual or exceptional noise coming from the fan or indications on your manometer or system monitor can immediately tell you that something is amiss.

No level of radon is technically safe, but since it is naturally present everywhere, it is impossible to avoid entirely. 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 action to reduce radon levels if your home's test results are between 2 and 4 pCi/L or higher.

There are steps you can take as a homeowner to remediate radon yourself. While a radon reduction professional can make the biggest impact in your home, you can make efforts to improve radon levels on your own by sealing cracks, increasing ventilation, and testing for radon regularly.

The Friendsville, 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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