Top-rated radon detection and reduction specialists.

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

Enter your zip and get matched with up to 5 pros

Need a pro for your radon detection and reduction project in Ontario, OR?

Select your specific project to find the pro for you.

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

*The Angi rating for Radon Detection And Reduction companies in Ontario, OR 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, OR 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 January 20, 2026

Find Radon detection and reduction specialists in Ontario

Avatar for Presidential Inspections, LLC
Presidential Inspections, LLC
4.1(
51
)

Serving Ontario, OR and surrounding areas

Approved

In business since 2004

Free estimates

Small jobs welcome

"Craig Burton, the person who responded to my call and conducted the air quality testing was highly professional and enlightened me about the process from start to finish. Beyond the actual samples taken indoors and outside my home to set up the differential readings needed, he took moisture & thermal readings in the area of concern. I felt confident when samples were sent off that mine would not be confused with anyone elseâ s and that the manner in which they were conducted would assure accurate testing."
Improperl Installed Insualtion
Visible Mold
Frozen Pipes
No vapor barrier in the crawl space
Worn Roof

+3

Response time8 hrs
5 neighbors recently requested a quote
Recommended by79%of homeowners
Request Quote
Radon Detection and Reduction questions, answered by experts

While DIY testing is possible, abatement generally requires professional installation to ensure efficacy and meet safety standards.

Use a radon test kit or hire professionals to conduct a detailed assessment of radon levels in your home.

Long-term exposure increases lung cancer risks. Prolonged homestay individuals and smokers encounter heightened vulnerability and exposure concerns.

Radon is present almost everywhere but, like sunlight, the concentration levels and how often you are exposed to it have a large part to play in just how dangerous it is. There are levels of radon that are acceptable inside a house, but above a certain limit, radon becomes a serious radioactive hazard that is a known cause of lung cancer. In fact, radon exposure is the number two leading cause of lung cancer (after smoking).

The cost to replace a radon fan ranges from $300 to $600 for the fan itself, with installation adding an additional $200 to $500. Overall, the total cost for replacement can range from $500 to $1,100, depending on factors such as the fan model, home size, and local labor rates. If the fan is part of a larger radon mitigation system, the price may be higher.

The Ontario, OR 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