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Verified Reviews for Radon Detection And Reduction pros in Madison, CT

*The Angi rating for Radon Detection And Reduction companies in Madison, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

*The HomeAdvisor rating for Radon Detection And Reduction companies in Madison, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

Last update on December 04, 2025

Find Radon detection and reduction specialists in Madison

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
42 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 RJ Demolition and Construction LLC

RJ Demolition and Construction LLC

5.00(
1
)
•Approved Pro

RJ Demolition and Construction LLC

5.00(
1
)
•Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
17 local quotes requested

At RJ Demolition, we provide expert demolition, safe asbestos removal, and efficient water damage restoration for residential and commercial.Our experienced team ensures safety, reliability, and customer satisfaction in every job. Check out our services offered and call or click to schedule an estimate today!

"RJ Demoliton and Construction LLC was first introduced to us by way of a positive recommendation. Now it’s time for us to pay it forward …. Our number one concern was safety and the complete removal of the asbestos. Both were handled with precision and care. The RJ crew worked tirelessly to get the job done to our 100% satisfaction! The talent exhibited by RJ and Co. to refurbish and modernize the space was more than we bargained for! We were delighted to learn all of this was done at a fair and competitive price! We highly recommend RJ Demoltion and Construction for all of your asbestos removal and construction needs."

Vincent R on July 2025

At RJ Demolition, we provide expert demolition, safe asbestos removal, and efficient water damage restoration for residential and commercial.Our experienced team ensures safety, reliability, and customer satisfaction in every job. Check out our services offered and call or click to schedule an estimate today!

"RJ Demoliton and Construction LLC was first introduced to us by way of a positive recommendation. Now it’s time for us to pay it forward …. Our number one concern was safety and the complete removal of the asbestos. Both were handled with precision and care. The RJ crew worked tirelessly to get the job done to our 100% satisfaction! The talent exhibited by RJ and Co. to refurbish and modernize the space was more than we bargained for! We were delighted to learn all of this was done at a fair and competitive price! We highly recommend RJ Demoltion and Construction for all of your asbestos removal and construction needs."

Vincent R on July 2025

Oakhill Home Inspections

5.00(
1
)
•Approved Pro

Oakhill Home Inspections

5.00(
1
)
•Approved Pro
58 local quotes requested
Free onsite estimate

I pride my company on reliability, great communication, integrity, and quality work. I am an expert in home inspections and 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. Thank You, Charles Rauch Oakhill Home Inspections

"good job"

Mike R on November 2025

I pride my company on reliability, great communication, integrity, and quality work. I am an expert in home inspections and 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. Thank You, Charles Rauch Oakhill Home Inspections

"good job"

Mike R on November 2025

Avatar for Safe Zone Abatement Construction

Safe Zone Abatement Construction

5.00(
1
)

Safe Zone Abatement Construction

5.00(
1
)
10 years of experience

Safe Zone Abatement Construction invites you to experience prompt service and superior attention to detail. We have 25+ 5-star Google reviews and service the entire state of Connecticut. Customer satisfaction is our top priority. You can be assured you're in good hands with our company working on your project. Call us today for a free estimate. You'll be pleased you did.

Safe Zone Abatement Construction invites you to experience prompt service and superior attention to detail. We have 25+ 5-star Google reviews and service the entire state of Connecticut. Customer satisfaction is our top priority. You can be assured you're in good hands with our company working on your project. Call us today for a free estimate. You'll be pleased you did.

Avatar for Lance Dorfi LLC

Lance Dorfi LLC

5.00(
10
)

Lance Dorfi LLC

5.00(
10
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

About Lance Dorfi, LLC At Lance Dorfi, we believe in improving indoor air quality for all by reducing radon in the air we breathe. Lance and his father, Kurt, have been the leading radon specialists in lower NY State and Fairfield County, Connecticut for over 25 years. Through our expertise, hard work and dedication, we have built a strong reputation with real estate agents, buyers/sellers, and home inspectors. All work is personally overseen certified radon specialists who adhere to EPA guidelines and standards for radon reduction. Our guarantee provides a five year transferable warranty to maintain radon levels below the 4.0 pCi/L (EPA action level). Lance Dorfi is a certified radon tester and mitigator who frequently lectures on the importance of radon reduction and the latest abatement techniques. We are licensed home improvement contractors and fully insured. Pound Ridge, Stamford, White Plains, Fishkill, New City

"My house had excessive levels of radon in our lower level. The Lance Dorfi team installed a pump to pump out the radon and release it up above the roof of the house. Since then, radon levels in that part of the house have been very low, so the problem was resolved. The work was done on budget, and they did an excellent job with scheduling and customer service. I recommend them for dealing with radon."

JAMES M on July 2020

About Lance Dorfi, LLC At Lance Dorfi, we believe in improving indoor air quality for all by reducing radon in the air we breathe. Lance and his father, Kurt, have been the leading radon specialists in lower NY State and Fairfield County, Connecticut for over 25 years. Through our expertise, hard work and dedication, we have built a strong reputation with real estate agents, buyers/sellers, and home inspectors. All work is personally overseen certified radon specialists who adhere to EPA guidelines and standards for radon reduction. Our guarantee provides a five year transferable warranty to maintain radon levels below the 4.0 pCi/L (EPA action level). Lance Dorfi is a certified radon tester and mitigator who frequently lectures on the importance of radon reduction and the latest abatement techniques. We are licensed home improvement contractors and fully insured. Pound Ridge, Stamford, White Plains, Fishkill, New City

"My house had excessive levels of radon in our lower level. The Lance Dorfi team installed a pump to pump out the radon and release it up above the roof of the house. Since then, radon levels in that part of the house have been very low, so the problem was resolved. The work was done on budget, and they did an excellent job with scheduling and customer service. I recommend them for dealing with radon."

JAMES M on July 2020

Avatar for The Certified Home

The Certified Home

4.20(
5
)

The Certified Home

4.20(
5
)
Customers say: Quick response
11 years of experience

We offer a full range of inspection services, including residential home, condo/townhouse, and commercial building inspections. Services include testing for Radon levels, Water quality and Well functions along with Pest and Mold detection. With over 25 years of Renovation experience, we pass along our extensive home knowledge to each customer, and offer guidance and solutions specific to each home when needed.

"The inspection was a farce. We received a list of very minor repairs that needed to be done along with a couple of recommendations for system replacement due to age in the future. The inspector did not go up on the roof. If he had, he would have seen how soft the roof was. My wife notice the porch roof leaking during our remodeling project as the insulation was wet. Our contractor walked the entire roof and said it was an emergency to replace it. Sure enough 1500 sq feet of plywood of a 2000 sq foot roof had to be replaced. It was soft, splintering and wet. The splintering and disintegration should have also been visible from the attic hatchway. I am out $12,500 because of his negligence or laziness, I am not sure which. Do NOT use this company under any circumstances."

Anthony V on March 2021

We offer a full range of inspection services, including residential home, condo/townhouse, and commercial building inspections. Services include testing for Radon levels, Water quality and Well functions along with Pest and Mold detection. With over 25 years of Renovation experience, we pass along our extensive home knowledge to each customer, and offer guidance and solutions specific to each home when needed.

"The inspection was a farce. We received a list of very minor repairs that needed to be done along with a couple of recommendations for system replacement due to age in the future. The inspector did not go up on the roof. If he had, he would have seen how soft the roof was. My wife notice the porch roof leaking during our remodeling project as the insulation was wet. Our contractor walked the entire roof and said it was an emergency to replace it. Sure enough 1500 sq feet of plywood of a 2000 sq foot roof had to be replaced. It was soft, splintering and wet. The splintering and disintegration should have also been visible from the attic hatchway. I am out $12,500 because of his negligence or laziness, I am not sure which. Do NOT use this company under any circumstances."

Anthony V on March 2021

SWAT Environmental

2.50(
2
)

SWAT Environmental

2.50(
2
)
Free onsite estimate

SWAT Environmental is the largest radon remediation company. Our staff is experienced in installing radon removal systems for homes, schools, townhouses, condominiums, commercial and government buildings. With technicians located throughout New York, Connecticut and Rhode Island, we are positioned to address your radon mitigation issues promptly. We make every effort to schedule your service at your earliest convenience.

"It went well."

Jason W on February 2023

SWAT Environmental is the largest radon remediation company. Our staff is experienced in installing radon removal systems for homes, schools, townhouses, condominiums, commercial and government buildings. With technicians located throughout New York, Connecticut and Rhode Island, we are positioned to address your radon mitigation issues promptly. We make every effort to schedule your service at your earliest convenience.

"It went well."

Jason W on February 2023

Avatar for (860) 953-1090 SWAT Radon Mitigation West Hartford

(860) 953-1090 SWAT Radon Mitigation West Hartford

No reviews yet

(860) 953-1090 SWAT Radon Mitigation West Hartford

No reviews yet
37 years of experience

SWAT Environmental has installed over 50,000 radon systems throughout the country. We are America’s largest radon abatement company, and we have more certified technicians on staff than any other competitor. The experienced staff at SWAT Environmental leads the industry in removing radon from homes, schools, apartment buildings, condominiums, commercial and government buildings. SWAT Environmental is a trusted partner of some of the largest real estate firms in the country, and we lead the industry in quality and overall value. All of our technicians go through a rigorous training program that prepares them to make your home or office safe from the dangers of radon. When you have a problem with radon, you can trust the experienced professionals at SWAT Environmental.

SWAT Environmental has installed over 50,000 radon systems throughout the country. We are America’s largest radon abatement company, and we have more certified technicians on staff than any other competitor. The experienced staff at SWAT Environmental leads the industry in removing radon from homes, schools, apartment buildings, condominiums, commercial and government buildings. SWAT Environmental is a trusted partner of some of the largest real estate firms in the country, and we lead the industry in quality and overall value. All of our technicians go through a rigorous training program that prepares them to make your home or office safe from the dangers of radon. When you have a problem with radon, you can trust the experienced professionals at SWAT Environmental.

Avatar for (203) 846-5906 SWAT Radon Mitigation of Westport

(203) 846-5906 SWAT Radon Mitigation of Westport

No reviews yet

(203) 846-5906 SWAT Radon Mitigation of Westport

No reviews yet
37 years of experience

SWAT Environmental has installed over 50,000 radon systems throughout the country. We are America’s largest radon abatement company, and we have more certified technicians on staff than any other competitor. The experienced staff at SWAT Environmental leads the industry in removing radon from homes, schools, apartment buildings, condominiums, commercial and government buildings. SWAT Environmental is a trusted partner of some of the largest real estate firms in the country, and we lead the industry in quality and overall value. All of our technicians go through a rigorous training program that prepares them to make your home or office safe from the dangers of radon. When you have a problem with radon, you can trust the experienced professionals at SWAT Environmental.

SWAT Environmental has installed over 50,000 radon systems throughout the country. We are America’s largest radon abatement company, and we have more certified technicians on staff than any other competitor. The experienced staff at SWAT Environmental leads the industry in removing radon from homes, schools, apartment buildings, condominiums, commercial and government buildings. SWAT Environmental is a trusted partner of some of the largest real estate firms in the country, and we lead the industry in quality and overall value. All of our technicians go through a rigorous training program that prepares them to make your home or office safe from the dangers of radon. When you have a problem with radon, you can trust the experienced professionals at SWAT Environmental.

Showing 1-10 of 25
Radon Detection and Reduction questions, answered by experts

Sampling typically takes 1-3 hours, and depending on the provider, lab results are available within 2-7 days.

Properties should ideally be tested for radon every 2 to 5 years or sooner when changes to the property structure or ventilation occur that might impact airflow.

The only way to determine if you have a radon problem in your home is to have professional testing done. You can buy DIY radon test kits, but these are sometimes inaccurate in certain temperatures and humidity levels, and they don’t paint the entire picture in terms of your radon exposure. Scheduling testing once every two to five years is best. You can also look out for the following symptoms, which, according to the American Cancer Society, are symptoms of radon exposure:

  • Shortness of breath

  • Cough

  • Tightness in the chest

  • Difficulty swallowing

  • Hoarseness

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.

It is worthwhile to get radon testing done, especially if you haven’t in the past and don’t have active radon monitoring set up in your home. According to the American Lung Association, radon is a potential issue in all states, and testing is the best way to determine if it’s a current problem in your home. Radon testing includes professional tests that determine ongoing radon levels in your property, and it usually includes a mitigation protocol to help you decide what measures to take to protect your home and household members.

The Madison, 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.

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