Top-rated radon detection and reduction specialists.

Get matched with top radon detection and reduction specialists in Darien, CT

Enter your zip and get matched with up to 5 pros

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

Select your specific project to find the pro for you.

Find Radon detection and reduction specialists in Darien

Avatar for Apex Radon Solutions LLC
Apex Radon Solutions LLC
5.0(
11
)

Serving Darien, 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
24 neighbors recently requested a quote
Recommended by100%of homeowners
Oakhill Home Inspections
5.0(
1
)

Serving Darien, 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
12 neighbors recently requested a quote
Avatar for The Lab
The Lab
New to Angi

Serving Darien, CT and surrounding areas

Approved

In business since 2020

Emergency services offered

Small jobs welcome

The Lab 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 time1 day
2 neighbors recently requested a quote
Avatar for Lance Dorfi, LLC
Lance Dorfi, LLC
4.7(
64
)

Serving Darien, CT and surrounding areas

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
33 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Secure Home Inspections of NY, LLC
Secure Home Inspections of NY, LLC
4.9(
9
)

Serving Darien, CT and surrounding areas

In business since 2018

Free estimates

Warranties offered

"John M. was courteous, timely, and professional in his inspection. He was upfront about the issues -- whether they are serious or minor, rare or common, and whether more specialized input is required. His written report was very well done and will serve as a great home guide for us in the future after we move in. Thank you!"
Connecticut Condo
Electric Panel
Electric Panel
Missing Railings
Footings in a stone foundaiton

+7

Response time1 hour
Recommended by100%of homeowners
Avatar for Family Home Inspections, Inc.
Family Home Inspections, Inc.
4.3(
45
)

Serving Darien, CT and surrounding areas

In business since 2018

Free estimates

Emergency services offered

"Very Professional followed all federal, city, and state guidelines to conduct a mold assessment. Provided a comprehensive report that wad thorough and straightforward making it easily understandable and made themselves available due to my immediate concerns and went above and beyond my expectations. Very upfront and doesnâ t sugar coat anything by telling you things are fine or arenâ t fine but instead details the specifics and explains what exactly he is doing when heâ s doing it to help better inform you of how to not only prevent the growth of visible mold but how to best limit the exposure to it and most importantly he wore proper safety equipment gloves mask and shoe covers and respectively followed all COVID-19 guidelines set in place. Mike knows what heâ s doing, heâ s got the credentials and the experience and knowledge and he applied everything in an unbiased mold assessment of my apartment for a reasonable price. I would highly recommend him and would suggest reading his reviews before considering others because he is clearly a well respected and reputable resource in the areas he specializes in and his work proofs that! Thanks Mike Brandon"
Mold
Start of Mold Problems
Response time3 hrs
Recommended by88%of homeowners
Showing 1-10 of 21
Radon Detection and Reduction questions, answered by experts

Mitigation reduces radon levels, protecting your health and complying with safety standards.

No level of radon is technically safe, but since it is present everywhere, complete avoidance is impossible. 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 preventative measures if your home's radon levels are between 2 and 4 pCi/L or higher.

Radon enters your home when warm air begins to rise and exits through the roof, creating a vacuum that pulls cooler air from under the foundation. Part of that air is radon, which is an invisible, odorless gas that develops naturally when radioactive particles are deep within the ground. Those particles usually come from decaying matter in soil and rocks.

Abatement includes sealing entry points and venting with systems that reduce radon levels below recommended EPA limits. It is handled by certified professionals.

The lifespan of a radon mitigation system depends on the type of system and its maintenance. With proper care, a system can last for many decades. Passive systems tend to last longer as they have fewer components that require replacement. Active systems, which have more moving parts like fans, generally have a shorter lifespan. For instance, water filtration devices and active pressurization systems require more frequent maintenance. While the system as a whole is durable, the radon fan in an active system typically has a lifespan of 5 to 10 years and will need to be replaced. As long as the fan is working, the mitigation system should function correctly.

The Darien, 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.

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"