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

• <div><p>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.</p></div>

Q: What is the biggest source of radon?

• <div><p>The soil beneath your house is most likely what&rsquo;s causing an increased level of radon. This is because soil holds radioactivity for a long time and it&rsquo;s also what most buildings are built on. Another common source of radon is water from a source that hasn&rsquo;t been through periodic radon tests, such as well water. Over time, the radon from the soil can inhabit other parts of your house like the foundation or plumbing.</p></div>

Q: What steps should be taken if high radon levels are detected?

• <div><p>If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.</p></div>

Q: How do you remove radon from your home?

• <div><p>You can vent radon out of your house sometimes by simply opening a window, but it won&rsquo;t remove the source, and will likely rise above recommended levels quickly. A professional will be needed to assess your home, and determine the best strategy for radon removal. Active radon sump pumps and soil depressurization systems are often used to forcefully vent the radon from your home.</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>

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Verified Reviews for Radon Detection And Reduction pros in Sun City, CA

*The Angi rating for Radon Detection And Reduction companies in Sun City, 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 Sun City, 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 January 23, 2026

Reviewed in January 2026
Jonathon replaced two AC units for our home and they work great. He was very communicative, explained the process, and professional. Would definitely recommend to friends and family.
JEC Mechanical
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Reviewed in November 2025
service was excellent it excessed my expectations and afford and Jacob and friendly and through i would use again and referral to a friend
Estelle Plumbing
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Reviewed in October 2025
I had 7 fruit trees pruned and shaped. They did a great job trimming and cleaning away the brush. They were courteous and professional.
Golden Oaks Tree Care
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Reviewed in March 2024
I have been using RayÃ Â¢Ã Â Ã Â s Pool service for a year and my pool has never looked so great. Ray always returns my calls and texts promptly and keeps me informed regarding my pool and pool and equipment. He is very knowledgeable and certified in pool equipment maintenance and chemicals....
Ray's Pools-Unlicensed Contractor
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Reviewed in February 2024
Peter was quick and efficient. Very knowledgeable and diligent in his work. Very honest, courteous and straightforward. He quickly diagnosed the problem and provided good consultation during and after the repair. I highly recommend him.
Peter's Appliance
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Reviewed in August 2023
Wonderful experience with RA, they came out and took care of my property quickly and professionally. I’m very happy! I’ve had them out multiple times since to do other jobs around my property. Highly recommend!
RA Landscape
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Reviewed in April 2023
Jason was knowledgable and understanding. Did his research and was able to install the phyn plus used to monitor my home for leaks. Made sure install was correct and no leaks!
Donathan Plumbing Company
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Reviewed in December 2022
Brian and his team did a fantastic job. They went above and beyond and I couldn't be happier with the results. Would hire again and I highly recommend him.
Fuerte's Painting & Construction
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Reviewed in November 2022
Thor Pest Control does great work. They have great customer service and are very affordable. Joseph is knowledgably and does the job right the first time. We have used him several times and will continue doing so.
Thor Pest Control Service
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Reviewed in September 2021
My AC had a burning smell and it wasn&amp;#39;t working right on Sunday. I called a couple of companies I found online and most told me to wait until Monday. I found Reliable Roofing online and called them and they sent someone out and in less than three hours it was fixed. Great service and...
Reliable Roofing
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Find Radon detection and reduction specialists in Sun City

Pacific Environmental & Abatement Solutions Inc

4.6(

)

Radon Gas - AbatementRadon Gas - Testing

Serving Sun City, CA and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"They're very reliable and dependable. They're also punctual!"

2 neighbors recently requested a quote

Recommended by100%of homeowners

Serving Sun City, CA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"The work went great. They were very fast and very professional. They did an excellent job on something we've needed done for years."

+31

5 neighbors recently requested a quote

Recommended by100%of homeowners

Request Quote

America’s Restoration Cabinet and Flooring Solutions

4.9(

)

Radon Gas - Testing

Serving Sun City, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Credit card accepted

"Nice work. Worth the cost on saving my knees. Completed in 2days as promised"

+21

28 neighbors recently requested a quote

Recommended by100%of homeowners

Radon Gas - AbatementRadon Gas - Testing

Serving Sun City, CA and surrounding areas

In business since 1998

Free estimates

Emergency services offered

"not that great. basically paid $99 to get an estimate. included cleaning roof and minimal repairs. took a while to get appointment, and then when they came, they didn't even do the work! gave a really big estimate and then re-seheduled to have someone else do the work. they wouldn't totally replace the roof, gave different estimates to repair, I went with a different company to do a full roof rplacement."

Recommended by81%of homeowners

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Radon Detection and Reduction questions, answered by experts

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 soil beneath your house is most likely what’s causing an increased level of radon. This is because soil holds radioactivity for a long time and it’s also what most buildings are built on. Another common source of radon is water from a source that hasn’t been through periodic radon tests, such as well water. Over time, the radon from the soil can inhabit other parts of your house like the foundation or plumbing.

If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.

You can vent radon out of your house sometimes by simply opening a window, but it won’t remove the source, and will likely rise above recommended levels quickly. A professional will be needed to assess your home, and determine the best strategy for radon removal. Active radon sump pumps and soil depressurization systems are often used to forcefully vent the radon from your home.

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.

The Sun City, 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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Mar 18, 2026Mar 18, 2026
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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.