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Find Radon gas testers in Denton

Avatar for NextDay Inspect
NextDay Inspect
4.9(
348
)

Serving Denton, 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 In and Out Home Inspections, LLC
In and Out Home Inspections, LLC
4.9(
86
)

Serving Denton, MD and surrounding areas

Approved

In business since 2016

Free estimates

Warranties offered

"Bill at In and Out was great, he worked with us and our realtor and the inspection was thorough with many pictures. He also spent time with me on the phone explaining what he found so I would understand the report better. I trust the company and the results and will definitely refer In and Out to my friends. Carole S."
Response time7 hrs
39 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Lawson Home Services, LLC
Lawson Home Services, LLC
4.8(
55
)

Serving Denton, MD and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"David Lawson was very professional & provided wonderful service with Radon Migation System. His workers were pleasant & efficient ."
Metal Door Crawlspace Entrace
Turtl Crawlspace Entrance
Attic Air Leaks
Attic Air Sealing
Garage Loft Ready for Sprayfoam

+137

Response time9 hrs
120 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for '58 Foundations
'58 Foundations
4.3(
137
)

Serving Denton, MD and surrounding areas

In business since 1958

Free estimates

Warranties offered

"The sellers of our house contracted with B-dry to waterproof the celler. Weeks after we moved in, we discovered a "bloom" near the edges of the new cement. We contacted B-dry to discuss this and it took almost a week to get a call back. I suggested it might be efflourescence but the service manager insisted it was highly unlikely. Rather it was probably mold which is not covered under the B-dry warranty. We had the basement tested for mold and the results came back as normal. Follow up calls to B-dry went unanswered. Finally, I scrubbed the concrete with muriatic acid and the "bloom" disappeared. It turned out that their waterproofing service was fine but the customer service was far less than adequate. The warranty is transerrable and hopefully this won't be the case if I need them in the future. <br />"
Recommended by78%of homeowners
Avatar for Callahan Inspection Services
Callahan Inspection Services
5.0(
3
)

Serving Denton, MD and surrounding areas

Free estimates

Emergency services offered

Warranties offered

"I not only hired this young man one time, but three different times for 3 different houses. Austin Callahan showed up on time, inspected the houses completely from the roofs to the basements. He also inspected the outside of the houses both front and back. The report he emailed me was complete including pictures of the areas he found fault with. He also conducted both radon and termite inspection as well. I was very impressed with this young man, he is honest and I highly recommend him."
Recommended by100%of homeowners
Baker Home Inspection Inc.
5.0(
3
)

Serving Denton, MD and surrounding areas

In business since 2012

Free estimates

Emergency services offered

Complete home and property inspections. 27 years experience in the home building/construction industry. Member of the National Association of Home Inspectors. American Home Inspectors Training Institute Certified. We inspect everything from the grounds to the roof and everything in between. All of our inspections meet or exceed the ASHI standards of practice and code of conduct.

Recommended by100%of homeowners
Dr Energy Saver
2.8(
4
)

Serving Denton, MD and surrounding areas

In business since 2010

Free estimates

Warranties offered

Dr. Energy Saver Delaware is your prescription for lower energy bills® in Delaware & Eastern Maryland. We have helped hundreds of homeowners improve their homes comfort and health by making their homes more efficient. Our comprehensive home energy efficiency solutions are customized to fit your specific needs. From window replacement, home insulation and air conditioning (heating, cooling, and ventilation) to air sealing, attic insulation, water heaters and furnace maintenance, repair, and replacement. If you're serious about comfort and health in your home don't take a chance on singular solutions. Your family and your home deserve a total home performance efficiency plan! By evaluating your home's systems, Dr. Energy Saver Delaware can help to ensure that you're getting the best results.

Recommended by50%of homeowners
FAQs for radon gas testing projects in Denton, 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 Denton, MD homeowners’ guide to radon gas testings

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