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Find Radon gas testers in Baltimore

Avatar for BK Enviromental, LLC
BK Enviromental, LLC
4.9(
18
)

Serving Baltimore, MD and surrounding areas

Approved

In business since 1987

Free estimates

Credit card accepted

"Outstanding. Brian is thorough, honest, provides the highest rated service I have ever worked with. Doesn't over charge, I recommend to everyone who is looking to get testing done."
Response time1 day
1 neighbors recently requested a quote
Recommended by100%of homeowners
County Large Home Inspections
4.5(
58
)

Serving Baltimore, MD and surrounding areas

Approved

In business since 1999

Free estimates

Customers say: Quick response

"Ted Riddick did an excellent job of performing a mold test in our basement, at the buyers request. I was very leary at first, because we recently cleaned the carpets and were concerned and/or confused that mold could be in our basement. We certainly would have known if we had mold in our basement or water coming causing a mold situation. Needless to say no mold was found, and my worries were alleviated. Mr. Riddick is a seasoned inspector, with a deep knowledge all areas of home inspections. He was professional, kind, did a great job."
Response time10 mins
7 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Eco Pro Restoration
Eco Pro Restoration
4.8(
104
)

Serving Baltimore, MD and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"Jerry provided excellent service for our air mold test. He was prompt in scheduling the appointment and arrived at the property as planned. After conducting the test, we received the results in just two days, which thankfully turned out negative."
5 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for D & H Demolition, LLC
D & H Demolition, LLC
5.0(
11
)

Serving Baltimore, MD and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Work team was polite, on time every day and highly professional. They explained the process in detail and kept us informed during each phase. I highly recommend D&H."
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+9

6 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for LION'S SOUND HOME INSPECTIONS, LLC
LION'S SOUND HOME INSPECTIONS, LLC
5.0(
1
)

Serving Baltimore, MD and surrounding areas

Approved

Free estimates

Offers commercial services

"Lion’s Sounds Home Inspections is one of the best home inspection companies in the area. Bob is fantastic home inspector, easy to book, detail oriented, great with clients, informative and easy to read reports. He also offers additional services including radon and mold testing. Highly recommended"
Mold Testing
Mold Testing
Mold Testing
Mold Testing
Mold Testing

+11

1 neighbors recently requested a quote
Avatar for Bee Secure Home Inspections
Bee Secure Home Inspections
5.0(
16
)

Serving Baltimore, MD and surrounding areas

In business since 2019

Free estimates

Emergency services offered

"This is the 3rd time we have used Bee Secure Home Inspections, and each time it has been exemplary. Michael spends as much time as you need with you going through each of the areas for home inspection as well as gives you suggestions and tips how to upkeep your home. He is very knowledgeable about each and every aspect of the home and goes above and beyond to get the perfect report. His report is very thorough and easy to read. He has dealt with my and my partner's father on the jobsite answering every question they had, impressing them both. In the future, I will be reaching out, since out of all the inspections, Bee Secure, has been the best."
Leaning chimney
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+1

Recommended by100%of homeowners
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FAQs for radon gas testing projects in Baltimore, 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 Baltimore, MD homeowners’ guide to radon gas testings

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