Top-rated radon gas testers.

Get matched with top radon gas testers in Johnstown, OH

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.

Find Radon gas testers in Johnstown

Avatar for PuroClean Home Savers

PuroClean Home Savers

4.80(
5
)
Approved Pro

PuroClean Home Savers

4.80(
5
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
19 local quotes requested

COVID-19 CORONAVIRUS SANITIZING AND DISINFECTING available 24/7. When damaging events like freezing pipes, mold, or fire strike your home or business, it can be devastating. Here at PuroClean Home Savers, we are prepared to meet you in your crisis, executing a quality job, and prioritizing your satisfaction. For those who live in the southeast region of central Ohio, including Columbus, Grove City, Galloway, West Jefferson, and London, we get the job DONE,” so don’t hesitate to contact us, anytime, day or night at (614) 689-0012.

"They are professional, quick and their fees are fixed."

Louis L on January 2020

COVID-19 CORONAVIRUS SANITIZING AND DISINFECTING available 24/7. When damaging events like freezing pipes, mold, or fire strike your home or business, it can be devastating. Here at PuroClean Home Savers, we are prepared to meet you in your crisis, executing a quality job, and prioritizing your satisfaction. For those who live in the southeast region of central Ohio, including Columbus, Grove City, Galloway, West Jefferson, and London, we get the job DONE,” so don’t hesitate to contact us, anytime, day or night at (614) 689-0012.

"They are professional, quick and their fees are fixed."

Louis L on January 2020


Avatar for ECO Disaster Services LLC

ECO Disaster Services LLC

4.73(
15
)

ECO Disaster Services LLC

4.73(
15
)
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

We use the most advanced equipment & procedures to repair water damage & smoke damage. Whether it is mold remediation, wind damage, smoke & fire damage, water damage or disaster cleanup, our rapid response team is here to serve. Ask our emergency response experts, who are standing by 24/7 to help you in a moments notice, about our free board up service! "Female Owned, Mother Nature Approved" is not just a slogan here at ECO Disaster Services; it is a way of life. We established ECO with two main objectives; unmatched customer service and to protect and conserve Mother Nature. We are a female owned business that understands our client's needs in a time of crisis; our professional staff will walk you through every step of getting your life back to normal. Our goal simply put is to ensure our client's are 100% satisfied with the service they receive from our professional staff and we will not rest until we meet that goal. Our client's are not a number; we believe they are people that are faced with life changing incidents and should have one less thing to worry about.

We use the most advanced equipment & procedures to repair water damage & smoke damage. Whether it is mold remediation, wind damage, smoke & fire damage, water damage or disaster cleanup, our rapid response team is here to serve. Ask our emergency response experts, who are standing by 24/7 to help you in a moments notice, about our free board up service! "Female Owned, Mother Nature Approved" is not just a slogan here at ECO Disaster Services; it is a way of life. We established ECO with two main objectives; unmatched customer service and to protect and conserve Mother Nature. We are a female owned business that understands our client's needs in a time of crisis; our professional staff will walk you through every step of getting your life back to normal. Our goal simply put is to ensure our client's are 100% satisfied with the service they receive from our professional staff and we will not rest until we meet that goal. Our client's are not a number; we believe they are people that are faced with life changing incidents and should have one less thing to worry about.


Avatar for Basement Remedy

Basement Remedy

5.00(
56
)

Basement Remedy

5.00(
56
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Basement Remedy is a small, Veteran owned & operated company specializing in Historic and Contemporary Foundation Repair, Drainage, Masonry, and more. We pride ourselves in the highest quality work, backed by warranty. We are a non-sponsored company and do not install "systems." Our methods and materials have been proven over time.

"Fantastic experience with Todd and basement remedy. Incredibly responsive (he came out and took a look same day). Knew immediately what the issue was with out stone foundation, and offered solutions that we could get done asap and fit our budget. Very happy and HIGHLY RECOMMEND for stone foundation work. We'll he bringing them back for other basement and foundation issues in the future."

Dowell H on July 2022

Basement Remedy is a small, Veteran owned & operated company specializing in Historic and Contemporary Foundation Repair, Drainage, Masonry, and more. We pride ourselves in the highest quality work, backed by warranty. We are a non-sponsored company and do not install "systems." Our methods and materials have been proven over time.

"Fantastic experience with Todd and basement remedy. Incredibly responsive (he came out and took a look same day). Knew immediately what the issue was with out stone foundation, and offered solutions that we could get done asap and fit our budget. Very happy and HIGHLY RECOMMEND for stone foundation work. We'll he bringing them back for other basement and foundation issues in the future."

Dowell H on July 2022


Avatar for The Basement Doctor

The Basement Doctor

4.75(
344
)

The Basement Doctor

4.75(
344
)
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers

Since 1987 The Basement Doctor has been providing expert wet basement waterproofing, foundation repair, crawl space vapor barrier, basement finishing, and mold and spray foam insulation services. We give free inspections and detailed written estimates to homeowners in the Columbus and central Ohio area. Our solutions have expanded to include back-up standby electrical generators. Selecting the right contractor to let into your home is a very important decision. The Basement Doctor respects you and your home – expertly performing the contracted work, being punctual, employing a drug free workforce, and skilled experienced installers. We only use ethical sales practices and honor warranties without hassle. All of our staff follows clear rules of respect, responsibility and integrity. We treat you the way we'd want our own families treated. Financing is available, lender qualifications apply. Additional services: mold clean-up & prevention, basement finishing, dehumidification & battery back-up sump pumps and emergency response to flooded basements.

"Jacob is the best in the business. It’s very comforting to know I have a reliable contact for whenever I’m having any basement/water issues or any questions. He also has a lot of references for other projects. 10/10 recommend. Thanks again Jacob!"

Cole W on April 2025

Since 1987 The Basement Doctor has been providing expert wet basement waterproofing, foundation repair, crawl space vapor barrier, basement finishing, and mold and spray foam insulation services. We give free inspections and detailed written estimates to homeowners in the Columbus and central Ohio area. Our solutions have expanded to include back-up standby electrical generators. Selecting the right contractor to let into your home is a very important decision. The Basement Doctor respects you and your home – expertly performing the contracted work, being punctual, employing a drug free workforce, and skilled experienced installers. We only use ethical sales practices and honor warranties without hassle. All of our staff follows clear rules of respect, responsibility and integrity. We treat you the way we'd want our own families treated. Financing is available, lender qualifications apply. Additional services: mold clean-up & prevention, basement finishing, dehumidification & battery back-up sump pumps and emergency response to flooded basements.

"Jacob is the best in the business. It’s very comforting to know I have a reliable contact for whenever I’m having any basement/water issues or any questions. He also has a lot of references for other projects. 10/10 recommend. Thanks again Jacob!"

Cole W on April 2025


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.


Avatar for Environmental Home Solutions, LLC

Environmental Home Solutions, LLC

5.00(
12
)

Environmental Home Solutions, LLC

5.00(
12
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Environmental Home Solutions LLC Is a local, family owned and operated radon testing and mitigation company in Central Ohio. We are committed to increasing awareness of radon and its health risks, as well educating our customers on the appropriate methods to reduce risk in their homes, schools, or businesses. We currently employ multiple State of Ohio licensed Radon Specialists, certified in both radon testing and all techniques of radon mitigation. Our specialists have completed course work and passed examinations through the National Radon Proficiency Program (NRPP), which is sanctioned by the United States Environmental Protection Agency. We are members in good standing with the American Association of Radon Scientists and Technologists (AARST), and maintain a strict policy of operating in accordance with ethical practices based on national standards as well as adhering to local rules and regulations where applicable.

"Bill was prompt about everything - communicating, quoting and arrivals. He did a super neat job and cut an exact fit in our finished basement floor and brand new siding. He was very neat. We liked him very much."

Suzanne R on July 2022

Environmental Home Solutions LLC Is a local, family owned and operated radon testing and mitigation company in Central Ohio. We are committed to increasing awareness of radon and its health risks, as well educating our customers on the appropriate methods to reduce risk in their homes, schools, or businesses. We currently employ multiple State of Ohio licensed Radon Specialists, certified in both radon testing and all techniques of radon mitigation. Our specialists have completed course work and passed examinations through the National Radon Proficiency Program (NRPP), which is sanctioned by the United States Environmental Protection Agency. We are members in good standing with the American Association of Radon Scientists and Technologists (AARST), and maintain a strict policy of operating in accordance with ethical practices based on national standards as well as adhering to local rules and regulations where applicable.

"Bill was prompt about everything - communicating, quoting and arrivals. He did a super neat job and cut an exact fit in our finished basement floor and brand new siding. He was very neat. We liked him very much."

Suzanne R on July 2022


Avatar for Flinn Home Inspection Group

Flinn Home Inspection Group

4.81(
37
)

Flinn Home Inspection Group

4.81(
37
)
Customers say: Quick response
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers

We educate our clients during the home inspection, so whether you are a buyer, seller, or a current homeowner you will receive an unbiased opinion regarding the condition of the property. Our inspectors have completed some of the industry’s most comprehensive training programs. In addition to our State License, we take pride in the fact that we have achieved the certification designations that set us apart from many of our competitors.

We educate our clients during the home inspection, so whether you are a buyer, seller, or a current homeowner you will receive an unbiased opinion regarding the condition of the property. Our inspectors have completed some of the industry’s most comprehensive training programs. In addition to our State License, we take pride in the fact that we have achieved the certification designations that set us apart from many of our competitors.


Avatar for Teasdale Fenton Cleaning & Property Restoration of Columbus

Teasdale Fenton Cleaning & Property Restoration of Columbus

5.00(
3
)

Teasdale Fenton Cleaning & Property Restoration of Columbus

5.00(
3
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

When your property is affected by fire, flood, mold, or storm damage, you can rely on our team to do everything possible to restore all cleanable items back to their pre-loss condition. Or if you are just in need of carpet cleaning or other floor cleaning needs! We provide a full-service, comprehensive solution for home owners and commercial property owners in need of carpet or floor cleaning, contents cleaning and contents restoration services. Through each stage of the contents cleaning process we will handle your property with care. 10% off for military personnel and senior citizens! We specialize in; Water Damage Carpet and Floor Cleaning Mold Remediation Emergency Boardup Services Smoke and Fire Damage Content Cleaning & Restoration Packout and Storage Home Reconstruction and Restoration

"They did wonderful job. They did very well and very respectful."

Adedamola A on May 2022

When your property is affected by fire, flood, mold, or storm damage, you can rely on our team to do everything possible to restore all cleanable items back to their pre-loss condition. Or if you are just in need of carpet cleaning or other floor cleaning needs! We provide a full-service, comprehensive solution for home owners and commercial property owners in need of carpet or floor cleaning, contents cleaning and contents restoration services. Through each stage of the contents cleaning process we will handle your property with care. 10% off for military personnel and senior citizens! We specialize in; Water Damage Carpet and Floor Cleaning Mold Remediation Emergency Boardup Services Smoke and Fire Damage Content Cleaning & Restoration Packout and Storage Home Reconstruction and Restoration

"They did wonderful job. They did very well and very respectful."

Adedamola A on May 2022


Avatar for Schwartz Handyworks

Schwartz Handyworks

No reviews yet

Schwartz Handyworks

No reviews yet
9 years of experience

We are a family-owned handyman, remodeling, and inspection company. Our managing owner, Matthew, has been a part of large and small projects over the years. He has been recognized for his honesty, quality, and fairness among hundreds of clients throughout central Ohio. Our goal is to serve you in an honest, efficient, and affordable way so that you will remember us and tell your friends about us.

We are a family-owned handyman, remodeling, and inspection company. Our managing owner, Matthew, has been a part of large and small projects over the years. He has been recognized for his honesty, quality, and fairness among hundreds of clients throughout central Ohio. Our goal is to serve you in an honest, efficient, and affordable way so that you will remember us and tell your friends about us.


Aadvanced Aair

4.56(
72
)

Aadvanced Aair

4.56(
72
)
Customers say: Quality work
37 years of experience

Radon is a cancer-causing natural radioactive gas that you can’t see, smell or taste. Its presence in your home can pose a danger to your family's health. Radon is the leading cause of lung cancer among non-smokers and the second leading cause of lung cancer in America, claiming about 20,000 lives annually. 5 employees. Uses subs for electrical. Cost is determined by the job. No travel charges. Additional DBA - Oak Hill Enterprises Inc & Aadvanced Aair Radon. Addional Area Served- Union County

"We were very pleased with the radon mitigation service provided by advanced air. Setting up the initial appointment was easy and fast. The front office folks gave us very precise and clear information about the steps involved in the process. The technician showed up to our place at the correct time. He was very polite and friendly. After a first inspection he told us, in direct, clear language what he was planning to do, the potential pitfalls. and ways around it. He finished the job quickly with minimum disruption of our activities and before leaving explained very well what the next steps would be. There were no surprise costs and they only charged us after a test demonstrated radon levels were below the maximum accepted value. Great service!"

Alvaro M on June 2019

Radon is a cancer-causing natural radioactive gas that you can’t see, smell or taste. Its presence in your home can pose a danger to your family's health. Radon is the leading cause of lung cancer among non-smokers and the second leading cause of lung cancer in America, claiming about 20,000 lives annually. 5 employees. Uses subs for electrical. Cost is determined by the job. No travel charges. Additional DBA - Oak Hill Enterprises Inc & Aadvanced Aair Radon. Addional Area Served- Union County

"We were very pleased with the radon mitigation service provided by advanced air. Setting up the initial appointment was easy and fast. The front office folks gave us very precise and clear information about the steps involved in the process. The technician showed up to our place at the correct time. He was very polite and friendly. After a first inspection he told us, in direct, clear language what he was planning to do, the potential pitfalls. and ways around it. He finished the job quickly with minimum disruption of our activities and before leaving explained very well what the next steps would be. There were no surprise costs and they only charged us after a test demonstrated radon levels were below the maximum accepted value. Great service!"

Alvaro M on June 2019

...
Showing 1-10 of 151
FAQs for radon gas testing projects in Johnstown, OH

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 Johnstown, OH homeowners’ guide to radon gas testings

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