Top-rated radon gas testers.

Get matched with top radon gas testers in Thornville, OH

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 Thornville

Minerton General Contracting
New to Angi

In business since 1986

Free estimates

Emergency services offered

We are a small family ran business employing up to 10 employees during busy months. We have subcontractors that we also work closely with to ensure complete customer satisfaction.

Lima Home Improvement Co
New to Angi

In business since 2005

Free estimates

Emergency services offered

We have several crews with expert craftsman able to give prompt service.

DRT LLC / DWB Improvements
New to Angi

In business since 1998

Emergency services offered

DRT LLC / DWB Improvements is an Ohio based General Builder/Contractor that enjoys helping people complete their construction needs. We offer free, honest inspections and would love to assist you. Our staff is talented, certified and licensed to fix your issue from start to finish.

Avatar for Basement Remedy
Basement Remedy
5.00(
56
)

In business since 2000

Free estimates

Emergency services offered

"Fantastic experience with Todd and basement remedy. Incredibly responsive (he came out and took a look same day). Knew immediately what the issue was with out stone foundation, and offered solutions that we could get done asap and fit our budget. Very happy and HIGHLY RECOMMEND for stone foundation work. We'll he bringing them back for other basement and foundation issues in the future."
Recommended by100%of homeowners
Avatar for CIERRA ENVIRONMENTAL
CIERRA ENVIRONMENTAL
5.00(
6
)

In business since 2001

Emergency services offered

Cierra Environmental has been in business for 11 Years. We continue to maintain an A+ Rating with the Better Business Bureau. We warrenty our work for 5 years. We provide air testing and remediation for both residental and commercial buildings. Meantion this site and recieve a free estimate depending on your location in Ohio. Our service area is the state of Ohio, Eastern Indiana, and Western PA. We will provide our services nationwide depending on the size of the job.

Recommended by100%of homeowners
Avatar for Moldlab
Moldlab
4.74(
352
)

In business since 2000

Free estimates

"The self-test product was as expected. The reports require additional research to interpret and understand, so seemed more targeted at professionals."
Recommended by89%of homeowners
Global Plasma Solutions
5.00(
1
)

In business since 2008

Global Plasma Solutions is a manufacturing company that sells air purification systems primarily into the commercial and residential markets. Home owners can benenfit from our systems as they are easily adapted to any HVAC system. Go to www.gpshvac.com to find a certified contractor near you to have one installed within your home.

Recommended by100%of homeowners
Ohio Inspections Group
New to Angi

In business since 2004

Emergency services offered

Home Inspections Thermal Imaging Mold Testing

Preferred Inspection Services
2.00(
1
)

In business since 1996

Free estimates

Emergency services offered

Owner operated. No subs. Cost is determined by the job. No travel charges. No service charges. Extra charge may apply. May contact through email.

Wade Construction
New to Angi

In business since 2009

Free estimates

Emergency services offered

I am in Business for the working person. There is no job too big or too small. I offer reasonable prices for quality workmanship.

Showing 1-10 of 47
FAQs for radon gas testing projects in Thornville, OH

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 Thornville, OH homeowners’ guide to radon gas testings

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