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Find Radon gas testers in Crownsville

Avatar for H&G Restoration
H&G Restoration
5.0(
12
)

Serving Crownsville, MD and surrounding areas

Approved

In business since 2018

Emergency services offered

Small jobs welcome

"Outstanding service! I could not understand why my downstairs closet was extremely cold upon entry. During my first conversation with Phillip, he conveyed concern and dedication regarding identification and remediation of the unusually cold air. During initial visit, Phillip noted portions of closet were approximately 15 degrees colder than adjoining rooms. After conducting internal and external inspections of the nearby areas, he identified potential source of cold air. A couple days later with outside temperatures in the 20s, Phillip exhaustively sealed external areas of concern. A few days later, he came again to determine temperature differential within the closet. It was now much more comfortable with temperature only a few degrees below neighboring rooms! Throughout the entire process, Phillip was very friendly and knowledgeable."
Response time1 day
Response rate96%
Recommended by100%of homeowners
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Avatar for Vespene Radon Testing
Vespene Radon Testing
5.0(
1
)

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
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Avatar for Pro Spex Home Inspection Services
Pro Spex Home Inspection Services
4.9(
333
)

Serving Crownsville, MD and surrounding areas

In business since 2003

Free estimates

Emergency services offered

"Robert was very helpful, knowledgeable, and courteous. I sometimes felt as if he were inspecting his own home, that's how much care he demonstrated."
Recommended by95%of homeowners
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Avatar for Highland Home Inspections LLC
Highland Home Inspections LLC
4.9(
106
)

Serving Crownsville, MD and surrounding areas

In business since 1989

Free estimates

Warranties offered

"I walked through the inspection with Kevin and he did a fine job explaining all his findings."
Recommended by98%of homeowners
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Avatar for G M D Construction INC
G M D Construction INC
4.9(
98
)

Serving Crownsville, MD and surrounding areas

In business since 1985

Free estimates

Warranties offered

"bottom line excellent work, good price, I highly recommend GMD Consttruction. quick response to getting a bid. Installation was done in 2 hours; excellent work; 50 yr caulk to seal the tube opening in the basement floor; electric hard wired into a circuit protected by a generator,; exterior power cutoff, fan and pipe to the roof line installed in a professional manner with secure standoffs for the pipe."
Recommended by98%of homeowners
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FAQs for radon gas testing projects in Crownsville, 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 Crownsville, MD homeowners’ guide to radon gas testings

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

See all articles