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*The Angi rating for Radon Detection And Reduction companies in San Ysidro, CA 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 San Ysidro, CA 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 November 11, 2025

Find Radon detection and reduction specialists in San Ysidro

Avatar for San Diego Abatement Services
San Diego Abatement Services
4.5(
41
)

Serving San Ysidro, CA and surrounding areas

Approved

In business since 1985

Emergency services offered

Warranties offered

"Professional, prompt, courteous, completed in one day. Responsive to emails and all questions. Left no mess."
Exterior Painting
Before - Acoustic Ceiling
After - Scraped & Textured
Asbestos Removal
Lead Removal Services

+2

Response time2 days
Response rate98%
1 neighbors recently requested a quote
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Avatar for Vanguard Renovations
Vanguard Renovations
5.0(
4
)

Serving San Ysidro, CA and surrounding areas

In business since 2015

Emergency services offered

Credit card accepted

"They were super fast, efficient and vey thorough. They did a great job. We were very happy with the service. They were also very professional."
Recommended by100%of homeowners
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Avatar for KCS Restorations Inc
KCS Restorations Inc
4.7(
33
)

Serving San Ysidro, CA and surrounding areas

In business since 2004

Free estimates

"Krugh did an incredible job for us! They fit us into a busy week. They were polite, on time, clean, and quick! . The owners David and Denise are very kind and professionals. Highly recommend their business."
Recommended by96%of homeowners
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Radon Detection and Reduction questions, answered by experts

A homeowner can install a radon mitigation system on their own. But it’s a challenging DIY that requires a lot of knowledge about radon mitigation as well as familiarity with local regulations. You do not want to risk an improper installation that leaves the system unable to detect radon or gives it a shortened life span. Relying on a professional is the surest way to guarantee a successful installation.

Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter. 

Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.

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.

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

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 San Ysidro, CA 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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