Top-rated radon detection and reduction specialists.

Get matched with top radon detection and reduction specialists in Portsmouth, OH

Enter your ZIP and get matched with up to 5 pros

Need a pro for your radon detection and reduction project in Portsmouth, OH?

Select your specific project to find the pro for you.

Find Radon detection and reduction specialists in Portsmouth

Avatar for Ohio Radon Services, LLC

Ohio Radon Services, LLC

4.98(
23
)
•Approved Pro

Ohio Radon Services, LLC

4.98(
23
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

With over 10 years of experience in the radon industry, we are the experts you need to take care of your home or business. We handle everything from mitigation to testing. We will treat your home as we would treat our own. Give Ohio Radon Services, LLC a call today, we look forward to working with you!

"Elijah McGraw did a "Great job"! Glad we had him do the work! He is really a nice guy! Thank you! Jim Block"

James B on May 2024

With over 10 years of experience in the radon industry, we are the experts you need to take care of your home or business. We handle everything from mitigation to testing. We will treat your home as we would treat our own. Give Ohio Radon Services, LLC a call today, we look forward to working with you!

"Elijah McGraw did a "Great job"! Glad we had him do the work! He is really a nice guy! Thank you! Jim Block"

James B on May 2024

Ohio Radon Services, LLC

No reviews yet

Ohio Radon Services, LLC

No reviews yet

We provide radon measurement and reduction services throughout Southern Ohio. Quick service to expedite real estate transactions. Owner operated and licensed by The Ohio Department of Health.

We provide radon measurement and reduction services throughout Southern Ohio. Quick service to expedite real estate transactions. Owner operated and licensed by The Ohio Department of Health.

Avatar for AdvantaClean of the Tri-State

AdvantaClean of the Tri-State

No reviews yet

AdvantaClean of the Tri-State

No reviews yet
Free onsite estimate

MOLD REMEDIATION & WATER DAMAGE REPAIR KEEPING HOMES & BUSINESSES SAFE FOR 20+ YEARS When it comes to mold remediation, water damage restoration, moisture control, radon mitigation, and air duct cleaning, there is only one name you should trust and it is AdvantaClean. Our team of certified professionals deliver fast, reliable services backed by over 20 years of experience. We are the first responders when you face emergencies such as severe mold growth, a burst water main, or more. We work quickly and efficiently to tackle the problem to prevent further, costlier damage.

MOLD REMEDIATION & WATER DAMAGE REPAIR KEEPING HOMES & BUSINESSES SAFE FOR 20+ YEARS When it comes to mold remediation, water damage restoration, moisture control, radon mitigation, and air duct cleaning, there is only one name you should trust and it is AdvantaClean. Our team of certified professionals deliver fast, reliable services backed by over 20 years of experience. We are the first responders when you face emergencies such as severe mold growth, a burst water main, or more. We work quickly and efficiently to tackle the problem to prevent further, costlier damage.

Avatar for Ohio Basement Authority

Ohio Basement Authority

4.76(
526
)

Ohio Basement Authority

4.76(
526
)
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers

Established in 2009, Ohio Basement Authority stands as a trusted subsidiary of Groundworks, a distinguished family of companies renowned for delivering unparalleled solutions. From foundation repair, structural reinforcement, crawl space encapsulation, basement waterproofing, and concrete lifting, we provide comprehensive services tailored to meet your needs. With our coverage spanning across the state of Ohio, we bring our local expertise closer to you. OBA proudly holds accreditation from the Better Business Bureau, a testament to our unwavering commitment to excellence. Drawing from decades of collective experience, extensive industry knowledge, and ongoing specialized training, our dedicated team is poised to safeguard your residential property against water damage, concrete sinking, and foundation instability. At OBA we are not just builders; we are guardians of your peace of mind. Contact us today for a FREE estimate!

"Absolute WORST experience I’ve ever had with a company! They are extremely predatory and convinced my 63 year old mother that she had to sign the contract THAT DAY, and she didn’t even understand what she was signing! The first day they were scheduled to do the job, they showed up hours late, and said they “weren’t the right crew to do the job”. We then had to wait a couple weeks for a different crew to come, and when they came they said they weren’t the right crew to do the job either!! 2 weeks later, ANOTHER crew came and said THE SAME EXACT THING!!! So after 3 times of getting the runaround, I was completely FED UP with this horrible company and decided to cancel the contract. They FINALLY did let me cancel, but are demanding we still pay $600! After all they put us through over 3+ months, they had the nerve to charge us $600 for an outlet! PLEASE AVOID THEM AT ALL COSTS! All they care about is dollar signs, not about the QUALITY of their work or customer service."

Shannon E on September 2025

Established in 2009, Ohio Basement Authority stands as a trusted subsidiary of Groundworks, a distinguished family of companies renowned for delivering unparalleled solutions. From foundation repair, structural reinforcement, crawl space encapsulation, basement waterproofing, and concrete lifting, we provide comprehensive services tailored to meet your needs. With our coverage spanning across the state of Ohio, we bring our local expertise closer to you. OBA proudly holds accreditation from the Better Business Bureau, a testament to our unwavering commitment to excellence. Drawing from decades of collective experience, extensive industry knowledge, and ongoing specialized training, our dedicated team is poised to safeguard your residential property against water damage, concrete sinking, and foundation instability. At OBA we are not just builders; we are guardians of your peace of mind. Contact us today for a FREE estimate!

"Absolute WORST experience I’ve ever had with a company! They are extremely predatory and convinced my 63 year old mother that she had to sign the contract THAT DAY, and she didn’t even understand what she was signing! The first day they were scheduled to do the job, they showed up hours late, and said they “weren’t the right crew to do the job”. We then had to wait a couple weeks for a different crew to come, and when they came they said they weren’t the right crew to do the job either!! 2 weeks later, ANOTHER crew came and said THE SAME EXACT THING!!! So after 3 times of getting the runaround, I was completely FED UP with this horrible company and decided to cancel the contract. They FINALLY did let me cancel, but are demanding we still pay $600! After all they put us through over 3+ months, they had the nerve to charge us $600 for an outlet! PLEASE AVOID THEM AT ALL COSTS! All they care about is dollar signs, not about the QUALITY of their work or customer service."

Shannon E on September 2025

Avatar for Environmental Testing & Research Laboratories, Inc

Environmental Testing & Research Laboratories, Inc

4.85(
347
)

Environmental Testing & Research Laboratories, Inc

4.85(
347
)
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

Radon Detection and Reduction questions, answered by experts

Through air sampling devices and surface swabs in key areas of concern.

A professional indoor air quality inspection takes anywhere from one to three hours, depending on the size of your home and the number of necessary samples. After the test, the specialist will discuss the findings, but you won’t get a full written report for 2 to 10 days, though you can ask your pro to expedite the process, if needed. 

Using an air purifier in your home or basement isn't an effective way to reduce or mitigate radon. Radon is an inert gas, meaning it doesn't react with other chemicals and can't be filtered the way particulates can be. While an air purifier can help improve your indoor air quality in other ways, don't rely on it to reduce radon.

In most states, radon testing companies don’t need to be licensed or certified by the state, but the companies that analyze the test results and develop radon mitigation protocols do. You should choose a radon testing company that suits your needs, but before hiring a mitigation specialist, check our state licensing tool to make sure the company is properly certified.

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 Portsmouth, OH 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.

See all articles