Top-rated radon detection and reduction specialists.

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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 would cause radon in a house?

• <div><p>The natural breakdown of uranium in soil, rock, and water can cause radon to appear in a home. The gas seeps into homes through cracks in foundations, walls, or floors, as well as through gaps around pipes or construction joints. Radon levels are influenced by soil composition, building materials, and ventilation. Poorly sealed or airtight homes can trap radon, allowing it to accumulate.</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>

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>

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>

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Verified Reviews for Radon Detection And Reduction pros in Sells, AZ

*The Angi rating for Radon Detection And Reduction companies in Sells, AZ 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 Sells, AZ 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 March 19, 2026

Reviewed in March 2026
We were cleaning up the mobile home lot in Duncan Arizona and didn’t have a truck to move the debris out. We called Bruno and he got the job done immediately and thoroughly. He has always responded in a timely and honest manner. His work ethic and values are very impressive. He also was very...
Bruno s salvage LLC
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Reviewed in August 2025
This company was great! They wasted no time in getting it done and provided an excellent finish. We are very satisfied with their work! We will definitely consider them on our next project.
Sonoran Fence Works LLC
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Reviewed in January 2022
I spoke Israel over the phone , he was at my house in 15 minutes. He said that he could do the job that afternoon and he and his crew did. Very professional work and customer service , 1 st Class. I will recommend them to everyone that has a need for tree service. Thank You Very Much !
Yuma Desert Contractors LLC
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Reviewed in July 2019
This Is a Great Way To Do Things More Faster and Easier ...
ASUS Roofing
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Reviewed in February 2013
It went well. I was surprised how quickly my TV was repaired. I was able to pay over the phone. The cost was reasonable considering how big the TV is. The employees helped me take the TV down from my vehicle and we received courteous service. Again, Thank you!! <br />
Amphi TV
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Reviewed in July 2011
It went really well. I would use her again, and I plan on it.
Michael's Pet Service
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Reviewed in June 2009
Freiendly, professional and quick to get the job done. Willing to come the long distant right from the start and complete the deck. Are pleased and happy with the deck and just how we wanted built.
C W Products, Inc.
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Find Radon detection and reduction specialists in Sells

Arizona Indoor Air Quality and Environmental Testing, LLC

4.3(

213

)

Serving Sells, AZ and surrounding areas

Approved

In business since 1999

Emergency services offered

Small jobs welcome

"Tracy was punctual and expedited our test kit via FED X and had our test results back within 48 hours."

Homeowner was doing a remodel project and discover

Response time2 hrs

3 neighbors recently requested a quote

Recommended by96%of homeowners

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California Restoration Of Tuscon

4.9(

)

Serving Sells, AZ and surrounding areas

In business since 2020

Free estimates

Emergency services offered

"I had water damage at my home early this year. I called California Restoration for an estimate and service. The majority of the work was completed satisfactorily, however there were some tasks that took longer than expected. Overall they did a decent job."

Recommended by100%of homeowners

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Indoor Air Quality Testing, LLC

4.5(

)

Serving Sells, AZ and surrounding areas

In business since 2005

"Accommodated my time schedule. Courteous, thorough and reasonably priced. Excellent credentials."

Recommended by83%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 natural breakdown of uranium in soil, rock, and water can cause radon to appear in a home. The gas seeps into homes through cracks in foundations, walls, or floors, as well as through gaps around pipes or construction joints. Radon levels are influenced by soil composition, building materials, and ventilation. Poorly sealed or airtight homes can trap radon, allowing it to accumulate.

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.

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.

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 Sells, AZ 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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•
Apr 6, 2026Apr 6, 2026
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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.
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•
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.
Kyle Schurman
•
May 21, 2026May 21, 2026
How Does a Radon Mitigation System Work? And How Do You Keep Yourself Safe?
How does a radon mitigation system work? Learn more about how it pulls air and radon from the soil and expels it before it can enter your house.
Angi
•
May 21, 2026May 21, 2026
How to Hire a Radon Mitigation Service
Need to find a qualified radon mitigation service? Learn how to hire the right pro, from certifications to questions to ask, to protect your home.
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•
May 2, 2026May 2, 2026
Can a Homeowner Install a Radon Mitigation System?
Can a homeowner install a radon mitigation system? While some parts of the project are fine for DIY, you should leave the meat of the task to a licensed professional.