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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: How long can you go without a radon fan?

• <div><p>Your radon fan needs to operate 24/7 to be effective. The only time the fan isn't operating is during its replacement. Radon levels in the home can increase within hours if the fan stops working or something obstructs the stack vent. Fortunately, radon systems require no downtime maintenance between fan changes.</p></div>

Q: How much does it cost to replace a radon fan?

• <div><p>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.</p></div>

Q: Why is my radon mitigation system so loud?

• <div><p>Your radon mitigation system may be loud because it&rsquo;s time to replace it. Any sounds are usually from the inline fan that helps create the vacuum and resulting airflow. If you hear a new, loud mechanical or humming noise from your radon fan, it might be time to replace it. Most fans used in radon mitigation systems last up to 10 years, but may need to be replaced sooner.</p></div>

Q: Is it okay to live in a house with radon?

• <div><p>Ideally, no one will live in a house with elevated radon levels, as prolonged exposure increases the risk of serious health issues like lung cancer. However, homes with radon can be made safe through mitigation systems, such as active soil depressurization. Testing for radon regularly and addressing high levels helps ensure a safe living environment.</p></div>

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

*The Angi rating for Radon Detection And Reduction companies in Herald, 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 Herald, 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 08, 2026

Reviewed in January 2026
Hector and his crew were extremely professional and did an outstanding job removing our 4 trees. We recommend their service to anyone that needs a tree removal etc.
Rancho Tree Care
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Reviewed in July 2025
I can?t thank HDRestorationinc enough for their fast and reliable water removal service. After a pipe burst in our basement, we were overwhelmed and worried about the damage. Their team arrived quickly, assessed the situation, and got to work immediately. They had all the right equipment and...
HD Remediation LLC
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Reviewed in September 2024
My husband and I were very happy with the work of Greg Farmer of Cal Property Pros LLC and highly recommend their services. Like many other Elk Grove homeowners, we recently received notice from our homeowner's insurance company that we were at risk of being dropped from coverage due to...
Cal Property Pros LLC
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Reviewed in May 2024
No one would do the work as our unit is so old, except Kyle. We could not be happier. Kyle inspected our AC and said it was strong enough to do the things we needed, so he has completed the work, and now this AC runs smooth, quiet and efficient! We got everything we asked him for AND MORE. ...
Beck's Heating and Air Solutions
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Reviewed in June 2023
Elk Grove Tree Service is an awesome tree service. Our neighbor hired them to prune and shape a huge tree in his backyard where branches hung over into our yard. The owner, Steve came over to talk to us and get permission to enter our yard. He was very nice, professional and thoughtful. We...
Elk Grove Tree Service
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Reviewed in April 2023
Steven was helpful from the beginning answering all our questions. This was installed for my 88 year old Mom in her 51 year old home. We had the softener system and 2 RO systems, The value is immeasurable for my Mom. Jesse was our installer and he was AWESOME! He was very knowledgeable and...
Living Water Company
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Reviewed in April 2023
Flexible and very knowledgeable. Did good work and helped us find the best solution
Big Blue Plumbing
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Reviewed in January 2023
Richard has been a blessing the man has been in touch with us from the beginning and has been working things out with our insurance company . We are victims.of this horrific flood in Acampo and he has been extremely helpful thus far .wonderful man and very informative as we go along thank you...
Richard Sisson General Contractor
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Reviewed in November 2022
They were efficient and very, very thorough. They worked quickly and safely. They were respectful of my property and even let me know of a drip line growing through the roots and ended up being cut. They cleaned all my fallen leaves and left the garden and grass perfect.
Yosca
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Reviewed in September 2022
The process was done quickly and the results were great
Tracy Lennon Painting
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Find Radon detection and reduction specialists in Herald

Standish Inspections

4.8(

)

Serving Herald, CA and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"They were very thorough and professional. I was very pleased with them."

Recommended by100%of homeowners

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Bona Fide Property Inspections

New to Angi

Serving Herald, CA and surrounding areas

Small jobs welcome

Credit card accepted

Offers commercial services

At Bona Fide Property Inspections, we believe that every property deserves a thorough and honest evaluation. Founded by licensed professional engineer Kirk LuMaye and construction industry professional Jeremy Karr, our company offers in-depth home inspections rooted in over a decade of forensic engineering, fire investigation and building systems expertise. We serve buyers, sellers, and homeowners with detailed, easy-to-understand reports that highlight what matters most—so you can make confident decisions with peace of mind. Whether you're purchasing your first home or managing an investment property, you can count on Bona Fide Property Inspections for integrity, precision, and professionalism on every inspection.

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SafeTerraSolutions

New to Angi

Serving Herald, CA and surrounding areas

Free estimates

Small jobs welcome

Credit card accepted

Here at SafeTerraSolutions we have trained Environmental Scientists and skilled Home Inspectors that will identify any problems within your home. From Air quality to a leaky pipe, we are your one stop shop for total home inspections.

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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.

Your radon fan needs to operate 24/7 to be effective. The only time the fan isn't operating is during its replacement. Radon levels in the home can increase within hours if the fan stops working or something obstructs the stack vent. Fortunately, radon systems require no downtime maintenance between fan changes.

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.

Your radon mitigation system may be loud because it’s time to replace it. Any sounds are usually from the inline fan that helps create the vacuum and resulting airflow. If you hear a new, loud mechanical or humming noise from your radon fan, it might be time to replace it. Most fans used in radon mitigation systems last up to 10 years, but may need to be replaced sooner.

Ideally, no one will live in a house with elevated radon levels, as prolonged exposure increases the risk of serious health issues like lung cancer. However, homes with radon can be made safe through mitigation systems, such as active soil depressurization. Testing for radon regularly and addressing high levels helps ensure a safe living environment.

The Herald, 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

Mitchell Grant
•
Mar 18, 2026Mar 18, 2026
How Much Does a Radon Mitigation System Cost? [2026 Data]
The cost of a radon mitigation system depends mostly on the type of system being installed. Use this guide to learn about your options.
Angi
•
Mar 18, 2026Mar 18, 2026
How Much Does Radon Testing Cost? [2026 Data]
Find out what impacts radon testing costs, including average prices for DIY kits and professional services, so you can protect your home and budget confidently.
Alison Kasch
•
Apr 6, 2026Apr 6, 2026
How Much Does Radon Remediation Cost? [2026 Data]
Get clear answers on how much radon remediation costs, including average prices, key cost factors, and tips to save money on your home’s radon mitigation.
Audrey Bruno
•
May 3, 2026May 3, 2026
How to Test for Radon in Your Home
Knowing how to test for radon will keep your home free and safe from this odorless gas—you just have to decide whether to do it yourself or hire a pro.
Amy Freeman
•
Apr 9, 2026Apr 9, 2026
What You Need to Know Before Refinishing a Basement
Thinking about refinishing your basement? A bit of planning can go a long way. Here's everything you need to know to get started.
Amy Freeman
•
Apr 5, 2026Apr 5, 2026
Who Installs Radon Mitigation Systems?
Radon is a gas that you can't see or smell and is harmful to your health. If your home has radon, you need to know who installs radon mitigation systems.