Get matched with top radon detection and reduction specialists in Danbury, CT
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Avatar for MDL Radon Mitigation and Measurement LLC
MDL Radon Mitigation and Measurement LLC
5.0(
35
)

Serving Danbury, CT and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"Doug was professional, timely and really took pride in his work. He took time to fully explain the process and how radon gets in the home. Our radon remediation system installation was flawless."
Typical ASD Radon System
Typical ASD Photos
Typical ASD Photos
Typical ASD Photos
Typical ASD Photos

+2

Response time6 hrs
Response rate90%
Recommended by96%of homeowners
Avatar for Apex Radon Solutions LLC
Apex Radon Solutions LLC
5.0(
11
)

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

Serving Danbury, 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
2 neighbors recently requested a quote
Avatar for The Lab
The Lab
New to Angi

Serving Danbury, 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
1 neighbors recently requested a quote
Avatar for Lance Dorfi, LLC
Lance Dorfi, LLC
4.7(
64
)

Serving Danbury, 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
25 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Water-Flo, Inc.
Water-Flo, Inc.
4.7(
37
)

Serving Danbury, CT and surrounding areas

In business since 1980

Free estimates

Emergency services offered

"Water Flo is fantastic. From Nick Sunday who did the walk through and estimate to the office staff and the installers, all are professional and friendly. No waiting months for the work to get done. The entire process took less than 2 weeks. Everyone was on time. The installation was neat and clean. The explanation of the equipment was presented so it was easy to understand and the radon system installed has dropped my levels 3 units!"
Manometer
Radon Air with manometer
Radon Air
Kinetico non-electric water softener
Watertight well cap (left) & Old style (right)

+5

Recommended by100%of homeowners
Avatar for Secure Home Inspections of NY, LLC
Secure Home Inspections of NY, LLC
4.9(
9
)

Serving Danbury, 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
Showing 1-10 of 24
Radon Detection and Reduction questions, answered by experts

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.

Your radon fan needs to operate 24/7 to be effective. The only time the fan isn't operating is during its replacement. Radon levels in the home can increase within hours if the fan stops working or something obstructs the stack vent. Fortunately, radon systems require no downtime maintenance between fan changes.

A homeowner can install a radon mitigation system on their own. But it’s a challenging DIY that requires a lot of knowledge about radon mitigation as well as familiarity with local regulations. You do not want to risk an improper installation that leaves the system unable to detect radon or gives it a shortened life span. Relying on a professional is the surest way to guarantee a successful installation.

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.

Installation typically takes 1-2 days, depending on the system and property layout.

The Danbury, 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.