Top-rated radon gas testers.

Get matched with top radon gas testers in Kennett Square, PA

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Radon gas testers in Kennett Square

Avatar for SIS Mold & Home Inspections
SIS Mold & Home Inspections
5.0(
2
)

Serving Kennett Square, PA and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

"I have worked with SIS on numerous occasions as I completely trust them with my testing needs (mold & radon). They are responsive and knowledgeable, having extensive training and experience. Bob and Mary Ann are professional and courteous while providing a competitive price for their services. I highly recommend SIS for mold and radon testing!"
Toxic Mold
Mold under rug at bathroom
Subfloor and joist
Basement Closet
Bedroom Closet

+3

Response time4 hrs
2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for BOR of Montgomery County
BOR of Montgomery County
5.0(
1
)

Serving Kennett Square, PA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

At Best Option Restoration of Montgomery County, we specialize in comprehensive disaster restoration services. Our team is dedicated to safeguarding homes and businesses from the damaging effects of mold, water, and storms. Here’s what sets us apart:\n\nMold Remediation: Our certified experts assess and isolate mold contamination, ensuring thorough removal and preventing further spore spread. We identify the root cause, devise effective solutions, and prioritize your safety.\nWater Removal and Storm Damage Restoration: When water wreaks havoc due to storms or other incidents, we’re here to help. Our 24/7 emergency response team swiftly tackles water extraction, drying, and structural repairs.\n\nComprehensive Services: Beyond mold and water remediation, we handle storm damage repairs, basement flood cleanup\nChoose Best Option Restoration of Montgomery County for reliable, efficient, and compassionate restoration services. We’re committed to restoring peace of mind and protecting your property.

10 neighbors recently requested a quote
Avatar for Real Estate Inspections
Real Estate Inspections
4.9(
49
)

Serving Kennett Square, PA and surrounding areas

In business since 2002

Free estimates

Warranties offered

"I had a great experience working with Real Estate Inspections. Frank's help in setting up the inspection and his thorough explanation of what to expect really gave me confidence in the company. Scheduling was a breeze, too! Aaron was amazing during the inspection. He took the time to tell me what he noticed, what the issue was, why it should be fixed, and what kind of work is involved in fixing the issue. As a first time homebuyer I felt like I learned a lot and it really put me at ease with the inspection. I would hire them again in a second!"
Recommended by97%of homeowners
Avatar for Anvil Radon Services
Anvil Radon Services
5.0(
15
)

Serving Kennett Square, PA and surrounding areas

In business since 2017

Free estimates

Emergency services offered

"Incredibly well! The people from Anvil were kind, courtesy, and professional from the moment I called until they left my home. Highly recommend using them if you are having any concerns at all around Radon. Tom was especially helpful and knowledgeable."
Recommended by100%of homeowners
Avatar for Landmark Inspections LLC
Landmark Inspections LLC
5.0(
97
)

Serving Kennett Square, PA and surrounding areas

In business since 2007

Free estimates

Warranties offered

"Scott performed an entire home inspection and radon test in addition to contracting a termite specialist to assist in the inspection. The experience was very professional and informative for wife and I as we are purchasing a home for the first time. He provided a package of information that will be useful to us throughout this process, which was very thouightful. I would highly recommend the company to anyone in the market. It doesn't get any better."
Recommended by100%of homeowners
STRONG FOUNDATIONS HOME INSPECTIONS
5.0(
48
)

Serving Kennett Square, PA and surrounding areas

In business since 2002

Free estimates

Warranties offered

"Nick was excellent. He is very informative and there to help you. Extremely knowledgeable and always has an answer to every question. He records and notes everything he sees during the inspection in order to provide an extremely detailed final report. Overall great experience and would definitely recommend to others."
Recommended by100%of homeowners
Radon Technology & Environmental
5.0(
3
)

Serving Kennett Square, PA and surrounding areas

In business since 1989

Free estimates

Warranties offered

"Excellent Company. Responsive, professional and reasonably priced. They installed a Radon system in our 6,000 (plus) square foot home, bring the radon levels down from 55 Ci/L to 2.1Ci/L. The fan is very quiet and we were extraordinarily pleased with every aspect of their work. I highly recommend this company to everyone dealing with radon issues in their home."
Recommended by100%of homeowners
Avatar for Environmental Testing & Research Laboratories, Inc
Environmental Testing & Research Laboratories, Inc
4.8(
347
)

Serving Kennett Square, PA and surrounding areas

In business since 1995

Free estimates

Warranties offered

"<p>it was superb! they easiest, hassle free Radon test in town, with extremely proficient people -- very knowledgeable and very people-friendly! they took their time to explain things on the phone to me before I committed. the test came back within 10 days or so -- via email. which is very convenient. it was very clear as it is, but I like talking through it and get advice. they were instantly available to discuss. they gave me future tips to keep on top of all things Radon related. </p> <p>I have to say that all this comes to be after 3 months of many back and forths with 3 other companies -- none of the other companies could be bothered to schedule a time, and those who did, never showed up.. many times over. I don't know why I was so patient with them and I wish had discovered Environmental Testing & Research Laboratories much sooner.</p> <p>Really highly recommend them!</p> <br />"
Recommended by93%of homeowners
...
Showing 1-10 of 76
FAQs for radon gas testing projects in Kennett Square, PA

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 Kennett Square, PA homeowners’ guide to radon gas testings

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