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

*The Angi rating for Radon Detection And Reduction companies in Ontario, NY 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, NY 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 June 01, 2026

Find Radon detection and reduction specialists in Ontario

Avatar for Piece of Mind Radon Testing & Mitigation
Piece of Mind Radon Testing & Mitigation
5.0(
6
)
Radon Gas - Testing

Serving Ontario, NY and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

Mitigation System
Radon Mitigation
Radon Mitigation System
Radon Mitigation System
Radon Mitigation System

+1

Response time6 hrs
Response rate91%
3 neighbors recently requested a quote
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Avatar for Comprehensive Mold Management LLC
Comprehensive Mold Management LLC
4.7(
144
)
Radon Gas - Testing

Serving Ontario, NY and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

"Our experience from the estimate process through the completion of the remediation, was outstanding; very professional, friendly, and always available to answer questions and explain the process."
Attic Mold Remediation
Attic Mold Remediation
Basement Mold Remediation
Basement Mold Remediation
Additional Photos

+6

Response time1 day
Response rate100%
3 neighbors recently requested a quote
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Avatar for Healthy Spaces
Healthy Spaces
4.5(
50
)
Radon Gas - Testing

Serving Ontario, NY and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"Despite the storm or 2017, this company scheduled us within a couple days of the consultation and even with the power outage and heat outage they completed the job within a week. I sold the house the day after they completed the work!!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+22

Response time2 days
Response rate100%
10 neighbors recently requested a quote
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Avatar for Lozier Environmental Consulting
Lozier Environmental Consulting
5.0(
6
)
Radon Gas - Testing

Serving Ontario, NY and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"It went well. The results came back in two days and we got our certificate that the test was done"
Response time1 day
Response rate100%
7 neighbors recently requested a quote
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Avatar for Certified Radon Systems
Certified Radon Systems
5.0(
35
)
Radon Gas - Abatement

Serving Ontario, NY and surrounding areas

In business since 2007

Free estimates

Credit card accepted

"I couldn't have asked for a better experience. I checked a few Radon companies and Certified Radon was the best. They seemed to be the most knowledgeable, had the best warranty/guarantee, and actually came in cheaper than some of the others. They brought my radon level from a mid-6 to less than 1 on the first test. If you need radon services I would highly recommend."
Clean exterior
Clean exterior
Suction point
Sump pit
Clean exterior

+2

Response time12 hrs
Response rate85%
Recommended by100%of homeowners
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Avatar for Paradigm Environmental Services
Paradigm Environmental Services
5.0(
5
)
Radon Gas - AbatementRadon Gas - Testing

Serving Ontario, NY and surrounding areas

In business since 1988

Free estimates

Emergency services offered

"We hired them to do radon testing. They came at the time that worked for me and arrived on time."
Response time8 hrs
Recommended by100%of homeowners
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Showing 1-10 of 13
Radon Detection and Reduction questions, answered by experts

Options include sub-slab depressurization, crawlspace ventilation, and sealing cracks. Choose based on home construction and radon levels.

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.

Radon is a cancer-causing radioactive gas that poses serious health risks, infiltrating homes through foundation cracks and unnoticed spaces.

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.

No level of radon is technically safe, but since it is present everywhere, complete avoidance is impossible. 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 preventative measures if your home's radon levels are between 2 and 4 pCi/L or higher.

The Ontario, NY 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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