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Find Radon gas testers in Seneca

Avatar for Radon Solutions
Radon Solutions
4.5(
13
)

Serving Seneca, SC and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"This is the company to hire if you have elevated radon results and need a Radon test. Stan shares his expertise in an understanding manner and he looks out for your best interest. Highly recommended!"
Exterior pipe routing
Exterior system painted
Exterior pipe penetrations
Creative system pipe routing.
Crawl Space Radon Evacuation

+15

Response time1 day
13 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Biotek Environmental, Inc.
Biotek Environmental, Inc.
4.8(
140
)

Serving Seneca, SC and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"Biotek is the best, most compassionate company I've ever dealt with. All the employees were top professionals with a very kind heart & ever so helpful. They answered all my questions honestly & were concerned about my health. All were knowledgeable, well trained, courteous, & performed the testing & remediation efficiently. They blocked off the place where the mold was found & protected me from any mold spores or mycotoxins the the remediation could stir up. They brought huge air scrubbers to my house to suck up all bad stuff in the air & used a special vacuum cleaner to clean the carpets, as well as cleaning the furniture. They thoroughly took every precaution & measure to get rid of all toxins & poisons from the mold that have made me so sick. I am so grateful for Biotek & pray for all in the company everyday. May God bless them more than they could ever ask or think."
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+13

Response time2 days
20 neighbors recently requested a quote
Recommended by91%of homeowners
Construction Optimization, LLC
3.9(
14
)

Serving Seneca, SC and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

Construction Optimization, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

Response time8 hrs
12 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Environmental Testing & Research Laboratories, Inc
Environmental Testing & Research Laboratories, Inc
4.8(
347
)

Serving Seneca, SC 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
Avatar for Basement & Radon Solutions
Basement & Radon Solutions
4.9(
63
)

Serving Seneca, SC and surrounding areas

In business since 2001

Free estimates

Warranties offered

"I had conducted both a short test (First Alert) and a 6 month long alpha track test (AccuStar) to determine the level of radon present in the finished below-grade room of my house.  Both test results showed that the radon level was elevated significantly above the EPA's maximum safe level of 4.0 pCi/L ( the short test indicated 8.2 and the long test was 7.1). <br /> Based on Angie's List reviews and the recommendation of a neighbor, Basement and Radon Solutions was selected to provide a quote for a mitigation system.  Following a visit to my home, Stanley provided several choices for the location of the system.  After discussing the pros and cons of each option with Stanley, a solution was chosen which provides effective mitigation and minimal visual impact. <br /> Stanley and his assistant, Roy, were very punctual and did a very professional and neat installation.  Stanley explained his work to me at every step of the way.   Stanley then set up his radon detector to determine the level of effectiveness of the system.   The reading taken after several days of testing was below 1 pCi/L, much lower than the EPA's danger point.   <strong>The system reduced my radon level to one eighth of the level that was present without the system.</strong> <br /> Several days later the electrician, Joe Holbert, completed the permanent wiring to the radon blower. <br /> I am totally satisfied, and now feel safe about using the below grade level of my home. <br />"
Recommended by95%of homeowners
All American Environmental Services, LLC
5.0(
3
)

Serving Seneca, SC and surrounding areas

In business since 2021

Free estimates

Warranties offered

As I am sure you are aware most homes in the area have high levels of radon. We are here to give you the options needed to address this problem. We have the knowledge and capability to deal with any radon issue you come across. We can beat any quoted price as well as offer a $100 referral fee for any work that comes our way. Our team is hear to answer any radon questions at no cost to you. Let All American Environmental Services be your go to guy when it comes to radon. \n

Recommended by100%of homeowners
Avatar for A Healthier Home
A Healthier Home
4.8(
125
)

Serving Seneca, SC and surrounding areas

In business since 1977

Free estimates

Warranties offered

"Excellent. Mr. Rick Bayless was knowledgeable and well prepared to do the inspection, the testing, and follow-up inspection. He did an excellent job and I would highly recommend him."
Recommended by93%of homeowners
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FAQs for radon gas testing projects in Seneca, SC

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 Seneca, SC homeowners’ guide to radon gas testings

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