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Find Radon gas testers in Newtown

Avatar for NE Radon Doctors
NE Radon Doctors
4.6(
283
)
Radon Gas - Testing

Serving Newtown, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Small jobs welcome

"I havenâ t performed my radon test yet. Hope itâ s working!!"
Air System
Air System
Water System
Inside Air System
Air System

+1

Response time7 hrs
39 neighbors recently requested a quote
Recommended by96%of homeowners
Request Quote
Avatar for Lance Dorfi, LLC
Lance Dorfi, LLC
4.7(
64
)
Radon Gas - Testing

Serving Newtown, CT and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Lance Dorfi was proactive, efficient, and professional. They came to every appointment on time and tailored a radon mitigation solution that reduced the levels. I would highly recommend them for radon mitigation!"
Job Site
Response time2 days
14 neighbors recently requested a quote
Recommended by96%of homeowners
Request Quote
Avatar for Apex Radon Solutions LLC
Apex Radon Solutions LLC
5.0(
11
)
Radon Gas - Testing

Serving Newtown, CT and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

"Apex did a great job explaining the choices I had as far as solutions involving my Radon gas issues. They were friendly and did a very professional job. I would highly recommend them."
Roof penetration for esthetics
Interior Esthetic Package
Exterior Radon Fan
Exterior Radon Fan
Exterior Radon Fan

+3

Response time2 days
25 neighbors recently requested a quote
Recommended by100%of homeowners
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Oakhill Home Inspections
5.0(
1
)
Radon Gas - Testing

Serving Newtown, CT and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

I pride my company on reliability, great communication, integrity, and quality work. I am an expert in home inspections, mold testing and radon testing and remediation. I will do my absolute best to keep you as educated and informed on your particular inspection project. I look forward to earning your business! Book with me online or feel free to give me a call today! My focus is protecting your home investment.\n\nThank You,\nCharles Rauch\nOakhill Home Inspections

Response time5 hrs
Response rate86%
2 neighbors recently requested a quote
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Avatar for Water-Flo, Inc.
Water-Flo, Inc.
4.7(
37
)
Radon Gas - Testing

Serving Newtown, CT and surrounding areas

In business since 1980

Free estimates

Emergency services offered

"Great customer service - both on the phone and in person. Work was done quickly and professionally, with no mess left behind. Scott went over everything with me before he left, making sure I understood the next steps and when replacement filters might be needed. Highly recommend!"
Manometer
Radon Air with manometer
Radon Air
Kinetico non-electric water softener
Watertight well cap (left) & Old style (right)

+5

Recommended by100%of homeowners
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Avatar for Family Home Inspections, Inc.
Family Home Inspections, Inc.
4.3(
45
)
Radon Gas - Testing

Serving Newtown, CT and surrounding areas

In business since 2018

Free estimates

Emergency services offered

"Mike is absolutely amazing. We wanted our basement air tested so we can safely work there and he did all the tests and advised us on a number of things that have indeed greatly improved the air quality. He also volunteered to take a look through our house and he identified mold in our bathroom that I hadn't even seen! He told us exactly what to do to get rid of it and it worked. I highly recommend Mike."
Mold
Start of Mold Problems
Response time3 hrs
Recommended by88%of homeowners
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Avatar for Connecticut Basement Systems Radon, Inc.
Connecticut Basement Systems Radon, Inc.
4.3(
29
)
Radon Gas - Testing

Serving Newtown, CT and surrounding areas

In business since 1987

Free estimates

Emergency services offered

"The company provided the information I needed to know about the Radon System at no cost to me."
Bubble Up Pro with Clack WS1 48K grain Softener
2 Tank GAC with Clack WS1 Softener and WS1 Anion e
Bubble Up Pro VFD Constant Pressure Aeration Syste
Waterborne Radon Mitigati
Waterborne Radon Mitigati

+22

Response time2 days
Response rate89%
Recommended by92%of homeowners
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Avatar for Landon Home Inspections, LLC - Home Facebook
Landon Home Inspections, LLC - Home Facebook
4.8(
4
)
Radon Gas - Testing

Serving Newtown, CT and surrounding areas

In business since 2014

Free estimates

"After the project was done, he was very helpful with getting me references for companies that could help throughout the rest of the process."
Response time3 hrs
Response rate93%
Recommended by100%of homeowners
Request Quote
Avatar for Water Fire Fix, LLC
Water Fire Fix, LLC
5.0(
9
)
Radon Gas - Testing

Serving Newtown, CT and surrounding areas

In business since 2018

Free estimates

Emergency services offered

"Tim was great. A complete professional. He helped fix our bacteria problem and gave instructions for how to manage the problem after. He was awesome to work with and I will definitely call again if I need help in the future. I would recommend Water Fire Fix, LLC to anyone in need of mold testing and remediation!"
Kitchen Remediation
Basement Flood and Remodel
Basement Flood and Remodel
Basement Flood and Remodel
Basement Flood and Remodel

+9

Response time8 hrs
Response rate100%
Recommended by100%of homeowners
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Showing 1-10 of 19
FAQs for radon gas testing projects in Newtown, CT

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 Newtown, CT 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