Top-rated radon detection and reduction specialists.

Get matched with top radon detection and reduction specialists in California, MO

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: Do radon mitigation systems decrease home value?

• <div><p>No, radon mitigation systems do not decrease home value or make a home harder to sell. In areas where homes experience similar radon exposure risks, a radon mitigation system is viewed as an improvement. Potential homebuyers often opt to buy a home with a radon mitigation system already installed to reduce the risk of cancer for their families.</p></div>

Q: How do I test for radon gas?

• <div><p>Use a radon test kit or hire professionals to conduct a detailed assessment of radon levels in your home.</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: Can you remediate radon yourself?

• <div><p>There are steps you can take as a homeowner to remediate radon yourself. While a radon reduction professional can make the biggest impact in your home, you can make efforts to improve radon levels on your own by sealing cracks, increasing ventilation, and testing for radon regularly.</p></div>

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Verified Reviews for Radon Detection And Reduction pros in California, MO

*The Angi rating for Radon Detection And Reduction companies in California, MO 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 California, MO 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 April 28, 2026

Reviewed in April 2026
The installation was completed in one day. They removed the old shower enclosure and cleaned everything up. Our new shower enclosure is beautiful.
Mad City Windows & Baths
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Reviewed in April 2026
Ed was excellent to work with. He was very conscientious and respectful and his work is excellent. Ed put up drywall in 2 rooms and then painted everything to match. We are very pleased with the entire project and we enjoyed meeting Ed. The whole thing started as a surprise flood in my 87...
Frye Family Painting and Drywall Repair
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Reviewed in October 2025
Leroy and crew very professional and knowledgeable. Did a great job on my mobile home roof over. Took there time to make sure everything was lined up installed correctly before they mwould make it permanent. Would hire them again in a minute. Would recommend them to anybody.
Eagle Eye Construction
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Reviewed in October 2025
They did an excellent job. I had two trees near my house that they took down. One was very large and starting to split down the middle only ten feet away from the house.
Show Me Tree & Turf
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Reviewed in June 2024
The owner Daniel is very respectful came to my home gave me a great price and got my drive way and home power washed and looking brand new.
Supreme power washing L.L.C
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Reviewed in May 2024
Hayden is a great guy to work with. Very professional, timely, and trustworthy. Prompt service and hardworking. He can out when he said he would and gave me an estimate, Took a deposit and ordered the materials. Once they came in(took about 3 days) he scheduled when to come out with me. He...
Yoakum construction LLC
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Reviewed in April 2024
I hired them to clean my outbuilding and driveway in the same day and they were able to get both done and look great! For once you get the triangle of good, fast, and decent without having to pick two!
Pure Exterior LLC
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Reviewed in February 2024
Jordan and his assistant did a very good job at every step of the process. Were punctual and cleaned up well. Did all removal, installation and also did a very good job on the trim.
Reimer Renovations
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Reviewed in April 2023
He was prompt and he did outstanding work because he was very conscientious, he did inside rehab on my home and did outside work on my deck, he also put a patio in, pretty good quality.
Cutt's Construction Services
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Reviewed in April 2022
I called Gallegos Exteriors and they came out the same day to measure and give us a quote. We signed the contract on a Thursday. The next day the shingles were delivered and the work was done on Monday. They completely removed the old roof, checked for any damage (there was none) and put on the...
Missouri Metal Roofing, LLC
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Find Radon detection and reduction specialists in California

Safeguard Home Solutions

5.0(

)

Radon Gas - Abatement

Serving California, MO and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Received information about our Radon testing device that made us feel more comfortable about it working properly. We were treated with respect."

Response time8 hrs

6 neighbors recently requested a quote

Recommended by89%of homeowners

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Full Scope Home Inspections

5.0(

)

Radon Gas - Testing

Serving California, MO and surrounding areas

Approved

In business since 2014

Free estimates

Credit card accepted

"Randall went above and beyond what I thought would be done for a home inspection, was willing to crawl into small spaces. He did a very thorough job, and his report was very detailed, and that's why we appreciate his work."

Response time3 hrs

Response rate93%

Recommended by100%of homeowners

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SWAT Environmental, Inc.

4.5(

)

Radon Gas - Abatement

Serving California, MO and surrounding areas

In business since 1988

Free estimates

Credit card accepted

"Overall everything was pretty good. I felt the installation could have looked much cleaner but it is fine. I still haven't re tested to see what my radon levels are now."

Recommended by97%of homeowners

Radon Gas - AbatementRadon Gas - Testing

Serving California, MO and surrounding areas

In business since 2020

Free estimates

Credit card accepted

"I like how much of a perfectionist he was and how timely he was. Most of all, I have a special need son and he was so kind to him and patient. His interaction was beyond. He truly has a great heart."

Response time3 days

Recommended by100%of homeowners

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Braun's Inspection Consultants

4.7(

)

Radon Gas - Testing

Serving California, MO and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"James performed the inspection like a real professional."

Recommended by100%of homeowners

Serving California, MO and surrounding areas

In business since 2005

Free estimates

Mid MO Inspectors will provide you or your business with a full service approach to all your inspection needs. Please feel confident in contacting Mid MO Inspectors for your next inspection.

Recommended by100%of homeowners

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Brandsted Property Preservation

New to Angi

Radon Gas - Testing

Serving California, MO and surrounding areas

In business since 2011

Free estimates

With over 10 years of experience in the home inspection industry, we are the experts you need to take care of your home. We will treat your home as we would treat our own. Give Brandsted Home Inspections a call today. We look forward to working with you.

Response time10 mins

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Radon Detection and Reduction questions, answered by experts

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.

No, radon mitigation systems do not decrease home value or make a home harder to sell. In areas where homes experience similar radon exposure risks, a radon mitigation system is viewed as an improvement. Potential homebuyers often opt to buy a home with a radon mitigation system already installed to reduce the risk of cancer for their families.

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

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.

There are steps you can take as a homeowner to remediate radon yourself. While a radon reduction professional can make the biggest impact in your home, you can make efforts to improve radon levels on your own by sealing cracks, increasing ventilation, and testing for radon regularly.

The California, MO 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.
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.
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.
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.
Jacqueline DeMarco
•
May 2, 2026May 2, 2026
What Is Radon and How Does It Get In Your Home?
What is radon gas? Find out what this radioactive gas is, why it is dangerous, how it gets in your home, and how to mitigate it.
Jacqueline DeMarco
•
Apr 10, 2026Apr 10, 2026
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.