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Find Radon gas abatement pros in Madison

Avatar for MDL Radon Mitigation and Measurement LLC

MDL Radon Mitigation and Measurement LLC

4.95(
33
)
•Approved Pro

MDL Radon Mitigation and Measurement LLC

4.95(
33
)
•Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
7 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Excellent service and results! Doug was very knowledgeable, very easy to talk to, very thorough and detail oriented. He made improvements to my existing system and greatly increased efficiency with immediately noticeable results. He treated my home with respect and left the work area cleaner than when he started. Very happy with the results and highly recommend!"

Al D on May 2025

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Excellent service and results! Doug was very knowledgeable, very easy to talk to, very thorough and detail oriented. He made improvements to my existing system and greatly increased efficiency with immediately noticeable results. He treated my home with respect and left the work area cleaner than when he started. Very happy with the results and highly recommend!"

Al D on May 2025

Avatar for Apex Radon Solutions LLC

Apex Radon Solutions LLC

5.00(
8
)
•Approved Pro

Apex Radon Solutions LLC

5.00(
8
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 local quotes requested

At Apex Radon Solutions , our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. No job is too big or too small for our experienced team. Call today for a quote.

"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."

Susan L on December 2023

At Apex Radon Solutions , our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. No job is too big or too small for our experienced team. Call today for a quote.

"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."

Susan L on December 2023

Avatar for NE Radon Doctors

NE Radon Doctors

4.77(
266
)
•Approved Pro

NE Radon Doctors

4.77(
266
)
•Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
64 local quotes requested

NE Radon Doctors specializes in air & water radon removal throughout New England. Serving all of CT, MA, NH and VT. Custom systems without the custom price! Fast expert service. NE Radon Doctors is a family owned and operated small business. Founded in 2008, the company has serviced thousands of homes in Connecticut, Massachusetts, Rhode Island, New Hampshire and New York. Our belief is in spreading radon awareness and providing professional and effective means to safely lower radon levels. Our family looks forward to helping yours! For air radon meditation, we utilize ASD Radon Mitigation Systems, HRV Systems, and AVIR Systems. For water radon mitigation, we use GAC Systems and Aeration Systems. Depending on your home and your radon situation, we'll recommend a radon solution that works best for you. Call today to see how we can help.

"They said that they would be there between 1 and 2 PM and showed up exactly at 1 PM. They finished the job within 30 minutes and to the old part with them. I was very satisfied with their work."

Philip G on August 2025

NE Radon Doctors specializes in air & water radon removal throughout New England. Serving all of CT, MA, NH and VT. Custom systems without the custom price! Fast expert service. NE Radon Doctors is a family owned and operated small business. Founded in 2008, the company has serviced thousands of homes in Connecticut, Massachusetts, Rhode Island, New Hampshire and New York. Our belief is in spreading radon awareness and providing professional and effective means to safely lower radon levels. Our family looks forward to helping yours! For air radon meditation, we utilize ASD Radon Mitigation Systems, HRV Systems, and AVIR Systems. For water radon mitigation, we use GAC Systems and Aeration Systems. Depending on your home and your radon situation, we'll recommend a radon solution that works best for you. Call today to see how we can help.

"They said that they would be there between 1 and 2 PM and showed up exactly at 1 PM. They finished the job within 30 minutes and to the old part with them. I was very satisfied with their work."

Philip G on August 2025

A & R Environmental, LLC

4.88(
65
)
•Approved Pro

A & R Environmental, LLC

4.88(
65
)
•Approved Pro
Customers say: True professional
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
38 local quotes requested

A&R Environmental, LLC, has been radon specialist since 1995. We guarantee that any system we install will bring your radon level averages below the State guidelines. We pride ourselves with not just reducing radon levels to a point below the action level, but reducing them as low as possible. The lower the radon levels are, the lower the cancer risk. We also believe that the beauty of your home should not be sacrificed for the sake of its safety; therefore, A&R Environmental, LLC, will work harder to make your radon system as discreet and attractive as possible.

"They were very good to work with. "

Donna B on August 2025

A&R Environmental, LLC, has been radon specialist since 1995. We guarantee that any system we install will bring your radon level averages below the State guidelines. We pride ourselves with not just reducing radon levels to a point below the action level, but reducing them as low as possible. The lower the radon levels are, the lower the cancer risk. We also believe that the beauty of your home should not be sacrificed for the sake of its safety; therefore, A&R Environmental, LLC, will work harder to make your radon system as discreet and attractive as possible.

"They were very good to work with. "

Donna B on August 2025

Mount Carmel Construction, LLC

No reviews yet

Mount Carmel Construction, LLC

No reviews yet
21 years of experience

General Contractors and Hazardous Materials Abatement and Remediation

General Contractors and Hazardous Materials Abatement and Remediation

Moldlab

4.74(
352
)

Moldlab

4.74(
352
)
Customers say: True professional
25 years of experience

Mold identification, mold test kits and testing supplies. If you suspect you have a mold problem give us a call toll free and we can walk you through your testing options.

"The self-test product was as expected. The reports require additional research to interpret and understand, so seemed more targeted at professionals."

Jessica H on February 2018

Mold identification, mold test kits and testing supplies. If you suspect you have a mold problem give us a call toll free and we can walk you through your testing options.

"The self-test product was as expected. The reports require additional research to interpret and understand, so seemed more targeted at professionals."

Jessica H on February 2018

Avatar for Shoreline Environmental

Shoreline Environmental

5.00(
14
)

Shoreline Environmental

5.00(
14
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Full service mold remediation and testing company serving Connecticut and Rhode Island with over 42 years of construction experience. Our analysis begins when we identify the source of the mold and correct the problem creating the issue. Our 42 years of experience in construction is what sets us apart. Only then can we remove the mold. We take the time to educate every customer in the process ensuring a full understanding of the problem. Our executive staff if fully trained and possess degrees in Biology and Environmental Sciences. Free visual examinations and reports. Free estimates. We also provide Pet odor removal and carpet treatment for mold and odors. All our products are biodegradable and non-toxic to humans and pets.

"I would definitely hire Shoreline Environmental, again, if I needed to. This company sent two employees to do the job who were extremely polite, consciencious and skilled at renovation (carpentry and sheet rock) as well as mold removal. Soup to nuts. They wore protective masks whenever they were in my home whether or not in the basement or house. Their demeanor on the job was very professional. They re-explained what they were doing for containment to prevent mold spores from escaping. Prior to the job, the owner, Mark DeAngelis, thoroughly explained the process from beginning to end. We had two companies to choose from and chose this company because they were safe and able to do the complete job from remediation to renovation. The other company would have left us with the bare studs. Also, Mark did not have a high pressure approach and was patient with our repetitive questions. And he threw in a couple more repairs at no cost since they were there, already! During the job I learned that Mark's employees were employed for a very, very long time by Mark. NOT fly by nights! They had a mutual respect for each other which showed positively in their work attitudes. I have hired many companies and this one is a keeper!"

jane s on October 2020

Full service mold remediation and testing company serving Connecticut and Rhode Island with over 42 years of construction experience. Our analysis begins when we identify the source of the mold and correct the problem creating the issue. Our 42 years of experience in construction is what sets us apart. Only then can we remove the mold. We take the time to educate every customer in the process ensuring a full understanding of the problem. Our executive staff if fully trained and possess degrees in Biology and Environmental Sciences. Free visual examinations and reports. Free estimates. We also provide Pet odor removal and carpet treatment for mold and odors. All our products are biodegradable and non-toxic to humans and pets.

"I would definitely hire Shoreline Environmental, again, if I needed to. This company sent two employees to do the job who were extremely polite, consciencious and skilled at renovation (carpentry and sheet rock) as well as mold removal. Soup to nuts. They wore protective masks whenever they were in my home whether or not in the basement or house. Their demeanor on the job was very professional. They re-explained what they were doing for containment to prevent mold spores from escaping. Prior to the job, the owner, Mark DeAngelis, thoroughly explained the process from beginning to end. We had two companies to choose from and chose this company because they were safe and able to do the complete job from remediation to renovation. The other company would have left us with the bare studs. Also, Mark did not have a high pressure approach and was patient with our repetitive questions. And he threw in a couple more repairs at no cost since they were there, already! During the job I learned that Mark's employees were employed for a very, very long time by Mark. NOT fly by nights! They had a mutual respect for each other which showed positively in their work attitudes. I have hired many companies and this one is a keeper!"

jane s on October 2020

Global Plasma Solutions

5.00(
1
)

Global Plasma Solutions

5.00(
1
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Global Plasma Solutions is a manufacturing company that sells air purification systems primarily into the commercial and residential markets. Home owners can benenfit from our systems as they are easily adapted to any HVAC system. Go to www.gpshvac.com to find a certified contractor near you to have one installed within your home.

Global Plasma Solutions is a manufacturing company that sells air purification systems primarily into the commercial and residential markets. Home owners can benenfit from our systems as they are easily adapted to any HVAC system. Go to www.gpshvac.com to find a certified contractor near you to have one installed within your home.

Water-Flo Inc

4.55(
11
)

Water-Flo Inc

4.55(
11
)
Customers say: Terrific value
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers

Water-Flo, is a full service water pump, water treatment and radon business. Our radon business is called Radon Solutions of CT. You can learn more about Water-Flo at our website www.waterflo.com. We are available for emergency service. We are fully licensed and insured. Our primary service areas are New Haven, Middlesex and New London Counties.

"Scott and crew were professional, knowledgeable and respectful. Helpful explanations and lots of patience with my questions. Observed COVID-19 safety protocol. Having no water isn't fun but overall a great experience, would definitely hire again!"

ann s on October 2020

Water-Flo, is a full service water pump, water treatment and radon business. Our radon business is called Radon Solutions of CT. You can learn more about Water-Flo at our website www.waterflo.com. We are available for emergency service. We are fully licensed and insured. Our primary service areas are New Haven, Middlesex and New London Counties.

"Scott and crew were professional, knowledgeable and respectful. Helpful explanations and lots of patience with my questions. Observed COVID-19 safety protocol. Having no water isn't fun but overall a great experience, would definitely hire again!"

ann s on October 2020

Avatar for Firme's Family Landscaping LLC

Firme's Family Landscaping LLC

4.60(
10
)

Firme's Family Landscaping LLC

4.60(
10
)
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers

At Firme's Family Landscaping LLC our belief is that our customers needs are the utmost importance. Our team with 10+ years experience is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. No job is to big or to small, please contact us for a free estimate!

"Excellent they text me when they were coming and showed up on time snd did an outstanding job. Both my lawn and gardens have never been so clean…."

Steve F on March 2025

At Firme's Family Landscaping LLC our belief is that our customers needs are the utmost importance. Our team with 10+ years experience is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. No job is to big or to small, please contact us for a free estimate!

"Excellent they text me when they were coming and showed up on time snd did an outstanding job. Both my lawn and gardens have never been so clean…."

Steve F on March 2025

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FAQs for radon gas abatement projects in Madison, CT

The only way to know whether your home or water supply contains radon is to schedule a professional test. A qualified radon inspector will collect samples, deliver lab-verified results, and explain the findings for $150 to $800. Once you know your exact levels, you and your radon mitigation pro can choose the right system and tackle the problem before it affects your family’s health.

Both roles tackle radon, but they focus on different steps. Inspectors test your home, interpret the results, and determine whether levels exceed EPA guidelines. Mitigation pros design and install the system that lowers those levels. Some companies do both, but the skills and equipment differ, so always verify that the person you hire is properly certified for the specific service you need.

Installing a mitigation unit fixes radon problems by reducing indoor gas levels to established safe standards. A system designed and installed by a mitigation expert, tailored to your home's specific layout and foundation, guarantees effective radon reduction. This expert installation ensures consistent performance over time while safeguarding your indoor air quality.

Open windows and doors do not reduce radon levels because they trigger a pressure imbalance that draws radon-laden air into your home. This practice fails to control radon concentration and can even worsen the issue. An active suction mitigation system provides a proven, safe, and effective solution to reliably reduce radon levels.

Radon mitigation systems generally last between 10 and 30 years, depending on system type and maintenance. Passive systems endure the longest because they have no moving parts, whereas active systems, which use a fan, require fan replacement every 5 to 10 years. System components, such as PVC pipes, seals, and fittings, can remain effective for decades when paired with periodic inspections and proper maintenance.

Radon mitigation systems consume between 300 and 3,000 kWh of electricity per year, depending on fan size and system design. On average, an active radon fan draws 100 to 300 watts continuously, which translates to roughly 876 kWh annually, and adds $30 to $300 to your energy bill each year. Choosing a high-efficiency fan and ensuring tight sealing around pipes helps minimize these ongoing costs.

The Madison, CT homeowners’ guide to radon gas abatements

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

See all articles