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*The Angi rating for Radon Detection And Reduction companies in Tolani Lakes, 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 Tolani Lakes, 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 June 28, 2025

Top-Rated Radon detection and reduction specialists in Tolani Lakes - Updated Nov 2026

Avatar for Affordable Radon Southwest
Affordable Radon Southwest
4.7(
356
)
Radon Gas - Abatement

Serving Tolani Lakes, AZ and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Warranties offered

"A potential buyer for a house I was selling had a Radon Test done. It scored a 13.7! Affordable Radon came out and gave me a bid for two systems, one for each side of the house. 3 weeks later the score is 1.1! They did a great job and got rid of the radon from beneath the slab!"
Radon Mitigation System
Radon Mitigation System
Radon Mitigation System
Radon Mitigation System
Radon System

+12

Response time1 day
Response rate95%
2 neighbors recently requested a quote
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Avatar for Arizona Indoor Air Quality and Environmental Testing, LLC
Arizona Indoor Air Quality and Environmental Testing, LLC
4.3(
213
)
Radon Gas - Testing

Serving Tolani Lakes, 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."
Mold Inspection
Mold Surface Swab Test
Homeowner was doing a remodel project and discover
Homeowner was doing a remodel project and discover
Mold Inspection

+1

Response time2 hrs
Recommended by96%of homeowners
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121 PRO, LLC
5.0(
2
)
Radon Gas - Testing

Serving Tolani Lakes, AZ and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

121 PRO, is committed to excellence every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Response time20 mins
Recommended by100%of homeowners
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EnviroSystems AZ LLC
5.0(
3
)
Radon Gas - Testing

Serving Tolani Lakes, AZ and surrounding areas

In business since 1978

Free estimates

Emergency services offered

"Ask for Austin Baker. Austin returned my call within minutes, began testing in my house two hours later, and I had my laboratory certified test results 36 hours later. Austin is thorough, professional, knowledgeable, and affordable. Definitely five stars all around!"
Final Clearance Sampling
Abatement Oversight
Lab Work
Abatement Oversight
Land Survey

+8

Response time7 hrs
Response rate92%
Recommended by100%of homeowners
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Radon Detection and Reduction FAQs, answered by experts

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 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.

Installation typically takes 1-2 days, depending on the system and property layout.

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.

The Tolani Lakes, 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.

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