Top-rated radon gas testers.

Get matched with top radon gas testers in Fairfield, CT

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Radon gas testers in Fairfield

Avatar for The Lab

The Lab

70 Westchester Avenue
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

The Lab

70 Westchester Avenue
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro
5 years of experience
Emergency services offered

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.

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.

Avatar for Lance Dorfi, LLC

Lance Dorfi, LLC

57 Westchester Avenue, Unit 207
4.82(
59
)
•Approved Pro

Lance Dorfi, LLC

57 Westchester Avenue, Unit 207
4.82(
59
)
•Approved Pro
Customers say: True professional
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
40 local quotes requested

At Lance Dorfi, LLC, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next home improvement project, no matter how small or large the project. We welcome your questions and thank you for your interest.

"They did a great job"

Robert G on May 2025

At Lance Dorfi, LLC, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next home improvement project, no matter how small or large the project. We welcome your questions and thank you for your interest.

"They did a great job"

Robert G on May 2025

Avatar for NE Radon Doctors

NE Radon Doctors

4 Morningside Drive
4.77(
266
)
•Approved Pro

NE Radon Doctors

4 Morningside Drive
4.77(
266
)
•Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
47 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

Oakhill Home Inspections

35 Oak Hill Rd
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

Oakhill Home Inspections

35 Oak Hill Rd
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro
Free onsite estimate
Emergency services offered

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

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

Avatar for Apex Radon Solutions LLC

Apex Radon Solutions LLC

74 N Main St Unit 2
5.00(
8
)
•Approved Pro

Apex Radon Solutions LLC

74 N Main St Unit 2
5.00(
8
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
30 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 H RESTORATION LLC

H RESTORATION LLC

5.00(
1
)
•Approved Pro

H RESTORATION LLC

5.00(
1
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

For over 15 years, our company has been a trusted leader in asbestos remediation and mold removal and cleaning. We pride ourselves on our swift and efficient services, ensuring the safety and well-being of homeowners and the environment. Our team of experts is dedicated to using the latest techniques and precautions to effectively address and eliminate hazardous materials. We also understand the urgency of these issues, which is why we offer reliable emergency services. Trust us to provide a safe and thorough solution for your home’s needs. We are licensed, insured and experts in handlng insurance claims.

"Answered any questions I had Very professional and did an amazing job Cleaned up afterwards"

Debbie M on November 2024

For over 15 years, our company has been a trusted leader in asbestos remediation and mold removal and cleaning. We pride ourselves on our swift and efficient services, ensuring the safety and well-being of homeowners and the environment. Our team of experts is dedicated to using the latest techniques and precautions to effectively address and eliminate hazardous materials. We also understand the urgency of these issues, which is why we offer reliable emergency services. Trust us to provide a safe and thorough solution for your home’s needs. We are licensed, insured and experts in handlng insurance claims.

"Answered any questions I had Very professional and did an amazing job Cleaned up afterwards"

Debbie M on November 2024

Avatar for Environmental Assessments & Solutions, Inc.

Environmental Assessments & Solutions, Inc.

144 Euclid Ave
4.98(
109
)
•Approved Pro

Environmental Assessments & Solutions, Inc.

144 Euclid Ave
4.98(
109
)
•Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
138 local quotes requested

Locally owned and operated mold and indoor environmental testing and consulting services company serving NYS, CTS, and NJS since 1992. With over 31 years experience and over 50,000 inspections completed. Court qualified and experienced. Independent and Unbiased inspections with no eyes on the clock. Weekend and evening appointments at no extra charge. ANGI's super service award winner 6 years in row 2017-2022! ** We NEVER conduct abatement/remediation services*** Please CALL us for a FREE phone consultation today!

"Charles was fantastic. Would recommend!"

eddie e on April 2025

Locally owned and operated mold and indoor environmental testing and consulting services company serving NYS, CTS, and NJS since 1992. With over 31 years experience and over 50,000 inspections completed. Court qualified and experienced. Independent and Unbiased inspections with no eyes on the clock. Weekend and evening appointments at no extra charge. ANGI's super service award winner 6 years in row 2017-2022! ** We NEVER conduct abatement/remediation services*** Please CALL us for a FREE phone consultation today!

"Charles was fantastic. Would recommend!"

eddie e on April 2025

Avatar for RJ Demolition and Construction LLC

RJ Demolition and Construction LLC

228 Kimberly Avenue
5.00(
1
)
•Approved Pro

RJ Demolition and Construction LLC

228 Kimberly Avenue
5.00(
1
)
•Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
44 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

Avatar for Water Fire Fix, LLC

Water Fire Fix, LLC

1771 Post Road East
5.00(
8
)
•Approved Pro

Water Fire Fix, LLC

1771 Post Road East
5.00(
8
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
132 local quotes requested

Our family owned business provides professional, eco-friendly cleanup and restoration services throughout Connecticut. We specialize in residential and commercial damage due to water, fire, mold, and natural disaster.

"Tim was wonderful. I put in this project on a Saturday night after finding mold behind a piece of furniture in my finished basement. The next morning Tim already reached out looking to set up an appointment Monday morning. Over the phone he explained the possible process of this project and put me in the books first thing Monday morning. He arrived right on time, looked at the area, and again explained everything. After about 15 minutes of doing his inspection, Tim gave me two estimates, which were both fairly priced. I selected the estimate that worked best for me, and Tim got working right away. Throughout the project, he continued to update me with what he was doing and what he had left. From when Tim arrived to when he left, it took him roughly 3.5 hours for the whole project. He did an excellent job, and I would recommend him to anyone."

Alli K on April 2025

Our family owned business provides professional, eco-friendly cleanup and restoration services throughout Connecticut. We specialize in residential and commercial damage due to water, fire, mold, and natural disaster.

"Tim was wonderful. I put in this project on a Saturday night after finding mold behind a piece of furniture in my finished basement. The next morning Tim already reached out looking to set up an appointment Monday morning. Over the phone he explained the possible process of this project and put me in the books first thing Monday morning. He arrived right on time, looked at the area, and again explained everything. After about 15 minutes of doing his inspection, Tim gave me two estimates, which were both fairly priced. I selected the estimate that worked best for me, and Tim got working right away. Throughout the project, he continued to update me with what he was doing and what he had left. From when Tim arrived to when he left, it took him roughly 3.5 hours for the whole project. He did an excellent job, and I would recommend him to anyone."

Alli K on April 2025

Avatar for Hydro Contractors

Hydro Contractors

85-62 Littleneck Pkwy.
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

Hydro Contractors

85-62 Littleneck Pkwy.
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro
121 local quotes requested
31 years of experience

Hello , allow me to introduce myself. My name is Jerry Burgos and I am the owner and operator of Hydro Contractor. We are a licensed and insured home remodeling company that specialize in all home restorations (from water, smoke, fire, etc), water removal, mold testing/remediation, and biohazard remediation, along with all phases of remodeling for your home/ business, kitchens, bathrooms, basements, and more! We are highly skilled in all aspects of the job, ranging from plumbing and heating, to electrical, to foundations, to flooring, to outdoor maintenance for your roofing or siding. We are your one stop shop for your home service needs! We offer emergency services and we work with all insurance companies! We make sure you are covered and you receive a 100% pay out, leaving you with no debt for your restoring of your home! No money out of pocket besides your deductible! I work very well with our customers to fulfill there needs as well to ensure that we are offering our best quality of workmanship. Give us a call! We are looking forward to meeting and offering our services! Thank You

Hello , allow me to introduce myself. My name is Jerry Burgos and I am the owner and operator of Hydro Contractor. We are a licensed and insured home remodeling company that specialize in all home restorations (from water, smoke, fire, etc), water removal, mold testing/remediation, and biohazard remediation, along with all phases of remodeling for your home/ business, kitchens, bathrooms, basements, and more! We are highly skilled in all aspects of the job, ranging from plumbing and heating, to electrical, to foundations, to flooring, to outdoor maintenance for your roofing or siding. We are your one stop shop for your home service needs! We offer emergency services and we work with all insurance companies! We make sure you are covered and you receive a 100% pay out, leaving you with no debt for your restoring of your home! No money out of pocket besides your deductible! I work very well with our customers to fulfill there needs as well to ensure that we are offering our best quality of workmanship. Give us a call! We are looking forward to meeting and offering our services! Thank You

...
Showing 1-10 of 633
FAQs for radon gas testing projects in Fairfield, CT

Radon is the second leading cause of lung cancer in the U.S. The gas seeps through cracks in foundations and collects in basements and other low areas. Once you breathe it in, radioactive particles lodge in lung tissue and do long-term damage. Because you can’t see or smell radon, the EPA recommends testing your home every two years—and after major renovations—to keep your family safe.

Yes—every home should be tested. The EPA advises doing it at least every two years and any time you remodel, buy, or sell. On average, one in 15 houses nationwide sits above the recommended limit, and the only way to know where yours stands is a formal test. The equipment simply measures gas levels and won’t change your indoor environment, so the process is completely harmless.

Certified radon professionals—often home inspectors or dedicated radon mitigation contractors—handle testing. These radon testing professionals follow EPA protocols and use calibrated instruments to check levels throughout your house. Hiring a certified radon specialist means results you can trust for real estate deals, insurance requirements, and, most importantly, your family’s health.

Inspectors specialize in measuring radon gas levels, while licensed mitigation contractors design and install the systems that remove it. If your test comes back high, your inspector can point you to a qualified mitigation pro who will size and install the right fan, piping, or other equipment to bring levels down.

No—standard home air purifiers don’t touch radon. They’re built to trap dust and pollen, not radioactive gas. If testing shows high levels, you’ll need a dedicated mitigation system that vents the gas from beneath your home to the outdoors. Relying on a room purifier alone won’t keep your indoor air safe.

Opening a few windows in your home might dilute radon for a short time, but the gas seeps back in as soon as they’re closed. For a lasting fix, you’ll need a professional mitigation system—often a sub-slab depressurization fan—that pulls radon from beneath the foundation and safely vents it outside.

The Fairfield, CT homeowners’ guide to radon gas testings

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

See all articles