Top-rated radon detection and reduction specialists.

Best radon detection and reduction specialists near New Haven, CT

Enter your zip and get matched with up to 5 pros

Need a pro for your radon detection and reduction project in New Haven, CT?

Select your specific project to find the pro for you.

Top-Rated Radon detection and reduction specialists in New Haven - Updated Nov 2026

A & R Environmental, LLC
4.7(
72
)
Radon Gas - Abatement

Serving New Haven, CT and surrounding areas

Approved

In business since 1995

Free estimates

Credit card accepted

"The installer (Davis) arrived on time, installed the system in about two hours, and showed me everything I needed to know about the system. The “before”and “after” test results were right in line with my own test measurements, which I took with a portable radon detector. The radon level dropped to a safe level after the system was installed, and that level has been maintained since it was installed in July of 2020, about 10 months ago. Overall, I was extremely pleased with A & R and I highly recommend them for radon mitigation work."
 tucked against a gutter
 Pipe thru a wood floor
hidden behind an outcrop
 AIRaider 433
Pipe thru closet shelf

+10

Response time11 hrs
29 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Apex Radon Solutions LLC
Apex Radon Solutions LLC
5.0(
11
)
Radon Gas - AbatementRadon Gas - Testing

Serving New Haven, CT and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

"I highly recommend Apex Radon Solutions. From getting the estimate to getting the work done, everything was just outstanding. Marco and his crew of 3 men showed up early and were all knowledgeable and extremely skilled. I had to install a radon fan and put in piping and electrical. They measured the piping with care and accuracy and did an excellent job with the installation. Iâ m truly impressed with the professionalism and quality of the work. They were also very reasonable with their prices. Thank you Apex for such great work."
Roof penetration for esthetics
Interior Esthetic Package
Exterior Radon Fan
Exterior Radon Fan
Exterior Radon Fan

+3

Response time2 days
27 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Rhino Radon Services
Rhino Radon Services
4.2(
9
)
Radon Gas - AbatementRadon Gas - Testing

Serving New Haven, CT and surrounding areas

In business since 2014

Free estimates

Emergency services offered

"I have worked with many contractors,plumbers,electricians, etc. in my time owning two homes. On here in New England and the other in Pembroke Pines,FL. These gentlemen from rhino radon services were deffinelty personable and proffesional I felt like my home was in good hands with this company. After calling around and having a job scheduled with another mitigation company I was blown off and left with a short deadline. Luckily after speaking with Henri from rhino radon they were able to squeeze me right in your schedule the very next day even though they had two other jobs scheduled they showed up at 5pm and still completed the job to ensure I met my closing date, if your looking for a standout and accommodating radon company I would say look no farther then rhino radon. I was very pleased with the service I recieved. HIGHLY RECOMMENDED


"
Recommended by100%of homeowners
Avatar for CT Basement Systems Radon, Inc.
CT Basement Systems Radon, Inc.
4.9(
5
)
Radon Gas - AbatementRadon Gas - Testing

Serving New Haven, CT and surrounding areas

In business since 1987

Free estimates

Emergency services offered

CT Basement Systems Radon Inc., is a full service radon mitigation, well pump, and water treatment provider. We are the oldest and largest Connecticut based radon mitigation company offering radon, well pump, and water system service to all of CT, Southern MA, and Westchester County, NY. We have more NRPP Certified technicians on staff than any other radon company in the United States. Our well pump and water treatment division is staffed by some of the most seasoned industry professionals under the direct supervision of Matt Bednarz, a WQA Certified Water Specialist CWS VI, and CT & NY state licensed well pump and water system contractor. Add to that; 24 hour emergency "NO WATER" service and you have an unbeatable combination of ability and reliability. We can help you better than anyone...PERIOD!

 exterior route active soil depressurization
 GAC  with opaque Big Blue pre and post filters
 aerator precipitator iron filtration
 iron clogged inlet screen on submersible pump
 ASD suction point

+69

Recommended by100%of homeowners
Avatar for BioClean
BioClean
5.0(
7
)
Radon Gas - AbatementRadon Gas - Testing

Serving New Haven, CT and surrounding areas

In business since 1989

Free estimates

Emergency services offered

"What a surprisingly wonderful experience we had with BioClean. I was able to schedule a same day appointment, and Brian and Dennis showed up exactly on time. Both men are absolute professionals, and are extremely honest! Within minutes of entering the home, they measured the air for particulates, and said that it wasn't a high reading at all. They proceeded to test around our home, and also up in the attic where the air handler is. The thought to look in places we never would have thought to look, but they said everything was actually in good condition. We did figure out that there is moisture in the basement coming from what may be a leaky toilet on the main floor - which we never would have known. The took their time, were very thorough, and made no money from us (with the free estimate coupon they posted here on Angie's List). They could have told us anything, and we would have believed it (and probably paid through the nose). But - these guys truly are wonderful, honest, and professional. If we have more work to do after the plumber comes to fix the leak, we will DEFINITELY call them to do the work. On a scale of 1 to 10, they are a 43."
Before
After
Recommended by100%of homeowners
Don Morrison, Inc.
5.0(
1
)
Radon Gas - AbatementRadon Gas - Testing

Serving New Haven, CT and surrounding areas

In business since 1993

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Response time2 days
Recommended by100%of homeowners
Showing 1-10 of 15
Radon Detection and Reduction FAQs, answered by experts

No, radon mitigation systems do not decrease home value or make a home harder to sell. In areas where homes experience similar radon exposure risks, a radon mitigation system is viewed as an improvement. Potential homebuyers often opt to buy a home with a radon mitigation system already installed to reduce the risk of cancer for their families.

No level of radon is technically safe, but since it is naturally present everywhere, it is impossible to avoid entirely. The average radon level in homes across the United States is 1.3 picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends taking action to reduce radon levels if your home's test results are between 2 and 4 pCi/L or higher.

No, air purifiers are not an effective way to reduce or remove radon. Radon is a radioactive, inert gas that cannot be filtered by standard air purifiers, which are designed to capture particulates like dust and mold. While an air purifier can improve indoor air quality by removing other pollutants, it should not be relied upon for radon. The only effective solution for high radon levels is a dedicated radon mitigation system.

If your home has a sump pit, you can integrate it with a radon mitigation system. You can accomplish this by sealing the pump cover with an airtight lid that accommodates radon vent pipes and sump pump hoses. This allows the vent pipe to redirect the radon gas outside of your home.

The cost for a radon mitigation system typically ranges from $800 to $1,500, with an average around $1,000. The final price depends on several factors, including the size of your home, the severity of the radon issue, and the type of system required. Your home's foundation type also significantly impacts the cost. For example, sealing and ventilating an unfinished basement might cost around $4,600, while encapsulating a crawl space without a foundation slab can range from $1,500 to $15,000.

The New Haven, CT homeowners’ guide to radon detection and reduction services

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