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Find Radon gas testers in Olney

Avatar for NextDay Inspect
NextDay Inspect
4.9(
348
)

Serving Olney, 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.

+744

Response time8 hrs
Response rate99%
7 neighbors recently requested a quote
Avatar for Maryland Home Inspection Services
Maryland Home Inspection Services
4.7(
36
)

Serving Olney, MD and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"I am a realtor and have used other companies for radon testing before. The Maryland Home Inspection technician was very responsive and timely. I would use them for other clients."
1 neighbors recently requested a quote
Recommended by97%of homeowners
Fidelity Home Inspections of Maryland
4.9(
54
)

Serving Olney, MD and surrounding areas

Approved

In business since 1990

Free estimates

Customers say: Quick response

"I contacted Fidelity Home Inspections of Maryland to inspect my roof. Mr. Alderson arrived on time. He was very professional. Answered all of the questions I had prior to the inspection and gave me a verbal critique after the inspection. As he promised I received a detailed written report via email within 24 hours."
Certified Fireplace & Chimney Inspector
Certified Experienced Contractor
Certified Deck Inspector
Certified Home Energy Inspector
Certified Moisture Intrusion Inspector

+4

Response time1 day
Recommended by98%of homeowners
Avatar for Nooks & Crannies Property Inspection, LLC
Nooks & Crannies Property Inspection, LLC
4.9(
4
)

Serving Olney, MD and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Ryan was right on time both for the dropoff and pickup for doing a Radon test of my basement. He's a great communicator and is very personable! He was able to give me a fair assessment of the test results this time, how they related to the results I had gotten at closing of my home, giving me all the info necessary to feel comfortable on my plan of action. I would highly recommend him!"
Residential Radon Inspection
Response time3 hrs
Recommended by100%of homeowners
Avatar for Adam Contracting
Adam Contracting
4.8(
137
)

Serving Olney, MD and surrounding areas

Approved

In business since 2008

Emergency services offered

Warranties offered

My name is Justin LeBlanc, and I am the owner and operator of Adam Contracting. Adam Contracting considers customer satisfaction our highest priority, and we make sure that, as a client, you are satisfied not only with the affordability but the quality of our work. Adam Contracting is a fully licensed and insured company. Please feel free to contact us anytime for an estimate!

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+32

4 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for D & H Demolition, LLC
D & H Demolition, LLC
5.0(
11
)

Serving Olney, 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
9 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Boston Environmental & Contracting, Inc
Boston Environmental & Contracting, Inc
4.4(
7
)

Serving Olney, MD and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

"We received an asbestos inspection/test for our old plaster walls and ceiling areas. The turn around times were fantastic - inspector was in our area and able to fit us in the same day I called. Sample results and accompanying lab report were emailed within 36 hours. All samples were analyzed by a local lab accredited under the NIST NVLAP Asbestos Fiber Analysis Lab Accreditation Program, so I felt comfortable trusting the results. The inspector seemed very knowledgeable and helped walk us through any areas that could be of concern. Thankfully all samples were negative, but the modest inspection and sampling fees were well worth the piece of mind during our remodel. In short, I highly recommend this company for asbestos testing/inspections."
5 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Radon Experts of VA LLC
Radon Experts of VA LLC
5.0(
49
)

Serving Olney, MD and surrounding areas

In business since 2014

Free estimates

Emergency services offered

"I called Rodolfo on a Friday because my radon mitigation system (installed by a different company) was in need of repair. He was able to come by the next day, on Saturday morning, and quickly identified the problem and was able to fix it."
Recommended by100%of homeowners
Avatar for Inspections by Bob
Inspections by Bob
4.9(
145
)

Serving Olney, MD and surrounding areas

In business since 2003

Free estimates

Warranties offered

"He was thorough and knowledgeable. As a first home buyer, we had lots of questions about many things. He answered all our questions and advised numerous things on what home owners should know and take care of. From the attic to the basement, he inspected throughly and explained what he found. He also took many photos and included them in the final report in a PDF file. Whole inspection process took about four hours. He sent a complete inspection report that night and updated it over a few days. The results in the report were effectively used in the process of home buying."
Recommended by96%of homeowners
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FAQs for radon gas testing projects in Olney, 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 Olney, MD homeowners’ guide to radon gas testings

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