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

• <div><p>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.</p></div>

Q: Is a radon mitigation system expensive to run?

• <div><p>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.</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 often should you replace a radon fan?

• <div><p>Many radon fans carry a five-year manufacturer's warranty. That said, your radon fan should last between five and ten years. Regular inspections will ensure the fan is operating properly. Unusual or exceptional noise coming from the fan or indications on your manometer or system monitor can immediately tell you that something is amiss.</p></div>

Q: How does radon enter my home?

• <div><p>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.</p></div>

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Verified Reviews for Radon Detection And Reduction pros in Norco, CA

*The Angi rating for Radon Detection And Reduction companies in Norco, 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 Norco, 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 December 18, 2025

Reviewed in December 2025
Security Fence and Gates did an excellent job on replacing my rod iron fences with a more contemporary design. All of the workers were very skilled and knowledgeable and did an excellent job in measuring what was a sloped area. I received many compliments on the fence. I appreciate the variety...
Security Iron Fence & Gates
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Reviewed in February 2025
Could not be more pleased. Showed up and did the preliminary work the first day contacted. They returned the next day and finished removing the tree, a approx.50-60 foot 50 year old ash tree, cleaned up all debris. Cleaned off the roof and yard. Absolutely the best. Jimmy, himself, is very...
JIMMYS TREE CARE INC
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Reviewed in January 2025
Removal and installation was great
EC Plumbing
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Reviewed in June 2023
They did a great job & were very knowledgeable about termite infestation & how to best take care of the problem. They were friendly and efficient.
Halo Home Services
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Reviewed in May 2023
Zetzer Cleaning Service went above and beyond to provide exceptional assistance to me as a new mother in dire need of help with household cleaning. Right from the booking process, their professionalism and commitment to excellence were evident. The Zetzer team arrived promptly and well-prepared,...
Zetzer Cleaning
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Reviewed in April 2023
They used a tree grinder to take away the trees after they cut them down. They removed 4 large palms in less than 90 mins and cleaned up everything. Super to work with.
Forest Tree Care Inc.
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Reviewed in January 2023
They arrived on time And removed removed 2 Palm Treesground the Stumps And cleaned up In a total of 6 hours
Silva Tree Service
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Reviewed in July 2022
Douglas McCoy Service: Pest Inspection and Remediation Corona Ca Superior Care Termite company provides a high quality of services supporting your pest control needs. They are very professional and knowledgeable about thr delivery of their product and services. In my experience with using...
Superior Care Termite Inc.
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Reviewed in April 2022
Helpful and friendly, Rene and his team made quick work installing birds spikes and even removing built up droppings in problematic areas! Excellent service, highly recommended!
Aesthetic Wildlife Control
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Reviewed in February 2022
We would recommend this company to cut your tree. We originally hired a different company to thin out our very tall pine tree. Unfortunately, the cutter got sick before finishing the job (but he did a wonderful job of what he could) and suggested that we call another company to finish. We...
Parcero Tree Service
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Find Radon detection and reduction specialists in Norco

Pacific Environmental & Abatement Solutions Inc

4.6(

)

Serving Norco, 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 Norco, 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

Response time1 day

Response rate90%

9 neighbors recently requested a quote

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America’s Restoration Cabinet and Flooring Solutions

4.9(

)

Serving Norco, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Credit card accepted

"Excellent company very professional, skilled, and performed excellent job. I highly recommend to whomever wants to do remodeling. We also very pleased with the nice and professional manner of Mr. Ryan and Scotty."

+21

Response time1 day

35 neighbors recently requested a quote

Recommended by100%of homeowners

Serving Norco, 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 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.

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

Many radon fans carry a five-year manufacturer's warranty. That said, your radon fan should last between five and ten years. Regular inspections will ensure the fan is operating properly. Unusual or exceptional noise coming from the fan or indications on your manometer or system monitor can immediately tell you that something is amiss.

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.

The Norco, 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.

See all articles

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