Top-rated radon detection and reduction specialists.

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

Q: What would cause radon in a house?

• <div><p>The natural breakdown of uranium in soil, rock, and water can cause radon to appear in a home. The gas seeps into homes through cracks in foundations, walls, or floors, as well as through gaps around pipes or construction joints. Radon levels are influenced by soil composition, building materials, and ventilation. Poorly sealed or airtight homes can trap radon, allowing it to accumulate.</p></div>

Q: Do radon mitigation systems decrease home value?

• <div><p>No, radon mitigation systems do not decrease home value or make a home harder to sell. In areas where homes experience similar radon exposure risks, a radon mitigation system is viewed as an improvement. Potential homebuyers often opt to buy a home with a radon mitigation system already installed to reduce the risk of cancer for their families.</p></div>

Q: Do air purifiers help with radon?

• <div><p>No, air purifiers are not an effective way to reduce or remove radon. Radon is a radioactive, inert gas that cannot be filtered by standard air purifiers, which are designed to capture particulates like dust and mold. While an air purifier can improve indoor air quality by removing other pollutants, it should not be relied upon for radon. The only effective solution for high radon levels is a dedicated radon mitigation system.</p></div>

Q: What if radon is still high after mitigation?

• <div><p>You'll need to test your home for radon after installing the mitigation system, then again every two years. If radon remains elevated, contact a licensed radon professional, either the contractor who installed the system or a different one, and have them evaluate the system. They may need to make some changes to improve its effectiveness and performance.</p></div>

Q: What level of radon is considered safe or dangerous?

• <div><p>No level of radon is technically safe, but since it is naturally present everywhere, it is impossible to avoid entirely. The average radon level in homes across the United States is 1.3 picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends taking action to reduce radon levels if your home's test results are between 2 and 4 pCi/L or higher.</p></div>

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Verified Reviews for Radon Detection And Reduction pros in Ontario, OH

*The Angi rating for Radon Detection And Reduction companies in Ontario, OH 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 Ontario, OH 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 August 14, 2025

Reviewed in August 2025
Levi was very clear on what my problem was and had all the parts needed ,fixed it and water was restored.
Jackson Well Services
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Reviewed in November 2024
I highly recommend this company. They removed 2 trees from my senior father's yard and he's a hard person to deal with. The owner was very understanding and compassionate and worked with my father where any other company would have walked away. I greatly appreciated the on going communication as...
KBR Evergreen Arbor
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Reviewed in May 2024
The owner returned my call the same day I left a message, gave me an estimate the next day, and scheduled the project. He trimmed bushes, weeded, edged, and mulched. He was very professional and personable. Very happy with the outcome and cost. Would definitely use again and recommend to others.
Titan Lawn Maintenance, LLC
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Reviewed in August 2023
Advantage Tree Care did an excellent job removing several trees that were in the field behind our house whose root system was encroaching on our leech field. The job was done quickly and efficiently and there was no mess left behind. He listened to our needs and made sure he got the job done....
Advantage Tree Care LLC
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Reviewed in March 2023
I had a dead tree that needed removed. And a maple that was in desperate need of a trimming. It was done pretty quick and at a surprisingly affordable cost. The stump was ground out and I couldnâ t even tell they were there with how neat the clean up was. 12/10
Jedd's Tree Service
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Reviewed in January 2023
A-1 did a great job on my fireplace and I was satisfied and recommend this company.
A-1 Evans Chimney Service
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Reviewed in May 2022
We hired them to take down six trees and trim three others. They showed up on the agreed date and completed the work in a timely manner. They ground the stumps and cleaned up debris. I would highly recommend them to anyone who would like trees removed or trimmed.
E.X.T. Eagle's Tree Maintenance
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Reviewed in April 2022
Tested the water which showed rust, cholorine, hardness, and other impurities. Installation was quick and clean.
Clearwater Systems
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Reviewed in November 2021
Called me same day and came out within 20 minutes. Offered me an exceptional rate to do remove 2 large trees and take the wood away right then. Was done within 2 hours and cleaned up afterwards. Very great service.
Productive Tree and Mulch, LLC
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Reviewed in November 2021
The tech, Chandrus was kind and helpful!
Mr. Appliance of North Central Ohio
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Find Radon detection and reduction specialists in Ontario

Black River Radon, LLC

5.0(

)

Serving Ontario, OH and surrounding areas

In business since 2019

Emergency services offered

Warranties offered

"Matt did a great job of installing my radon mitigation system. The unit is set up perfectly and looks very professional and the jobsite was cleaned up to how it was before he started the job. I would highly recommend Matt and Black River Radon for all of your radon mitigation needs."

+11

Response time5 hrs

Recommended by95%of homeowners

Serving Ontario, OH and surrounding areas

In business since 1977

Free estimates

Warranties offered

"I used Radon Systems over 20 years ago in another house and even still today they provide great service for a radon mitigation system."

Response time8 hrs

Response rate95%

Recommended by93%of homeowners

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Genesis Radon NEO LLC

4.9(

)

Serving Ontario, OH and surrounding areas

In business since 2018

Free estimates

Warranties offered

"Type of service was radon gas abatement"

Response time3 hrs

Recommended by88%of homeowners

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Medallion Home Inspections

4.9(

)

Serving Ontario, OH and surrounding areas

In business since 2009

Free estimates

Credit card accepted

"Very detailed work. I received more info than I anticipated, and he was timely, quick communication, and worked with my son to coordinate timing for the inspection. I had the detailed report the next morning after the inspection! Great timing."

Response time8 hrs

Response rate91%

Recommended by100%of homeowners

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Radon Detection and Reduction questions, answered by experts

The natural breakdown of uranium in soil, rock, and water can cause radon to appear in a home. The gas seeps into homes through cracks in foundations, walls, or floors, as well as through gaps around pipes or construction joints. Radon levels are influenced by soil composition, building materials, and ventilation. Poorly sealed or airtight homes can trap radon, allowing it to accumulate.

No, radon mitigation systems do not decrease home value or make a home harder to sell. In areas where homes experience similar radon exposure risks, a radon mitigation system is viewed as an improvement. Potential homebuyers often opt to buy a home with a radon mitigation system already installed to reduce the risk of cancer for their families.

No, air purifiers are not an effective way to reduce or remove radon. Radon is a radioactive, inert gas that cannot be filtered by standard air purifiers, which are designed to capture particulates like dust and mold. While an air purifier can improve indoor air quality by removing other pollutants, it should not be relied upon for radon. The only effective solution for high radon levels is a dedicated radon mitigation system.

You'll need to test your home for radon after installing the mitigation system, then again every two years. If radon remains elevated, contact a licensed radon professional, either the contractor who installed the system or a different one, and have them evaluate the system. They may need to make some changes to improve its effectiveness and performance.

No level of radon is technically safe, but since it is naturally present everywhere, it is impossible to avoid entirely. The average radon level in homes across the United States is 1.3 picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends taking action to reduce radon levels if your home's test results are between 2 and 4 pCi/L or higher.

The Ontario, 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.

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Mar 18, 2026Mar 18, 2026
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How Much Does Radon Remediation Cost? [2026 Data]
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Apr 5, 2026Apr 5, 2026
Who Installs Radon Mitigation Systems?
Radon is a gas that you can't see or smell and is harmful to your health. If your home has radon, you need to know who installs radon mitigation systems.
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May 2, 2026May 2, 2026
What Is Radon and How Does It Get In Your Home?
What is radon gas? Find out what this radioactive gas is, why it is dangerous, how it gets in your home, and how to mitigate it.
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Apr 10, 2026Apr 10, 2026
What Is Radon Testing?
What is radon testing? Radon testing measures the presence and concentration of radon gas within indoor environments. Read on to learn more.