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Avatar for Adam Contracting
Adam Contracting
4.83(
137
)

Angi Approved

In business since 2008

Emergency services offered

Warranties offered

"My only regret is not hiring Adam Contracting sooner. From the beginning of the project, I was updated on the schedule and cost. All of the employees were professional, and skilled, and left my house clean after each task. If I had issues or noticed something that needed to be changed the owner addressed the concern immediately. I am very happy with the finished project!"
1 neighbors recently requested a quote
Recommended by93%of homeowners
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Avatar for Mighty Restoration LLC
Mighty Restoration LLC
4.55(
10
)

Angi Approved

In business since 2015

Free estimates

Emergency services offered

"We hired Mighty in 2020 for soot removal after a kitchen pot caused smoke to accumulate all over the apartment. Mighty did an excellent job. They arrived promptly to inspect the damage and did a thorough clean up. I highly recommend them."
2 neighbors recently requested a quote
Recommended by90%of homeowners
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Avatar for Boston Environmental & Contracting, Inc
Boston Environmental & Contracting, Inc
4.43(
7
)

Angi Approved

In business since 2006

Free estimates

Customers say: True professional

Boston Environmental & Contracting, Inc. (BE&C) is a professional environmental services and contracting firm established in 2006. Our mission is to provide excellent environmental and contracting services to meet the diverse needs of our clients that include government agencies, commercial businesses and homeowners in today’s challenging regulatory climate. We offer a wide variety of cost-effective services including environmental consultancy, abatement, remediation, demolition, renovation/remodeling and specialty contracting services to our residential, commercial and government clients throughout the Washington, DC metropolitan area. We accept all major credit cards: VISA, American Express, MasterCard and Discover DC Business License: 70104232

Recommended by85%of homeowners
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Silver spring Carpet Cleaners
New to Angi

Free estimates

Emergency services offered

Warranties offered

We use top of the line products that are environmentally friendly and not only clean better than chemical cleaning, but also are safe for you, your pets, your family and your home.\nOur carpet and upholstery cleaning systems are recommended by leading manufacturers and cleaning experts.\nOur carpet cleaning company is licensed and insured and our technicians have expertise in the carpet cleaning field.

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Avatar for CDT Assess
CDT Assess
New to Angi

Free estimates

Emergency services offered

Environmental assessment services including:\n\nMold Assessments\nAsbestos Assessments\nLead Assessments\n\nPlease send me an email for pricing and availability. Licensed mold, lead, and asbestos inspector in both Virginia and Maryland. Please ask any questions and send a short summary of needs and issues you are having. I look forward to hearing from you!

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Avatar for ServiceMaster Co-op
ServiceMaster Co-op
New to Angi

Emergency services offered

ServiceMaster is the oldest disaster restoration company in the United States. We also are the only international restoration company. We work with all major insurance companies as well as smaller agencies.

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FAQs for radon gas testing projects in Potomac, MD

Radon is the second leading cause of lung cancer in the U.S. The gas seeps through cracks in foundations and collects in basements and other low areas. Once you breathe it in, radioactive particles lodge in lung tissue and do long-term damage. Because you can’t see or smell radon, the EPA recommends testing your home every two years—and after major renovations—to keep your family safe.

Yes—every home should be tested. The EPA advises doing it at least every two years and any time you remodel, buy, or sell. On average, one in 15 houses nationwide sits above the recommended limit, and the only way to know where yours stands is a formal test. The equipment simply measures gas levels and won’t change your indoor environment, so the process is completely harmless.

Certified radon professionals—often home inspectors or dedicated radon mitigation contractors—handle testing. These radon testing professionals follow EPA protocols and use calibrated instruments to check levels throughout your house. Hiring a certified radon specialist means results you can trust for real estate deals, insurance requirements, and, most importantly, your family’s health.

Inspectors specialize in measuring radon gas levels, while licensed mitigation contractors design and install the systems that remove it. If your test comes back high, your inspector can point you to a qualified mitigation pro who will size and install the right fan, piping, or other equipment to bring levels down.

No—standard home air purifiers don’t touch radon. They’re built to trap dust and pollen, not radioactive gas. If testing shows high levels, you’ll need a dedicated mitigation system that vents the gas from beneath your home to the outdoors. Relying on a room purifier alone won’t keep your indoor air safe.

Opening a few windows in your home might dilute radon for a short time, but the gas seeps back in as soon as they’re closed. For a lasting fix, you’ll need a professional mitigation system—often a sub-slab depressurization fan—that pulls radon from beneath the foundation and safely vents it outside.

The Potomac, MD homeowners’ guide to radon gas testings

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

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