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*The Angi rating for Radon Detection And Reduction companies in The Dalles, 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 The Dalles, 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 May 30, 2026

Find Radon detection and reduction specialists in The Dalles

Avatar for Absolute Environmental, LLC
Absolute Environmental, LLC
4.8(
12
)

Serving The Dalles, OR and surrounding areas

Approved

In business since 2019

Free estimates

Customers say: Quick response

"Mike came out to do Radon Mitigation at our property. We had received quotes from some local companies reaching into 5 figures! Mike not only did the job for a 3rd of the cost, but the radon levels were massively reduced to proper safe amounts. High quality materials used in the work, and he completed everything in one day. He is a super nice guy, who is very experienced at what he does, straight forward, and honest. You can't go wrong, and I would definitely recommend him to friends."
Same as outdoor air
Radon Mitigation
Radon Mitigation
Radon Mitigation
Almeda Ridge

+7

Response time1 day
Response rate88%
Recommended by100%of homeowners
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Avatar for SWAT Environmental, Inc.
SWAT Environmental, Inc.
3.9(
23
)

Serving The Dalles, OR and surrounding areas

In business since 1988

Free estimates

Credit card accepted

"There were some problems along the way . When those were pointed out via HomeAdvisor, the company responded and fixed what needed to be fixed with competence and generosity."
Recommended by90%of homeowners
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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.

Installation typically takes 1-2 days, depending on the system and property layout.

Abatement includes sealing entry points and venting with systems that reduce radon levels below recommended EPA limits. It is handled by certified professionals.

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 fan that pulls the radon out of the air needs to run continuously, so you may see an increase in your electric bill once you install the mitigation system. Additionally, you may see an increase in your heating or cooling bills, as the fan can cause some loss of hot or cool air.

The The Dalles, 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.

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