Top-rated radon detection and reduction specialists.

Get matched with top radon detection and reduction specialists in Williams, AZ

Enter your zip and get matched with up to 5 pros

Need a pro for your radon detection and reduction project in Williams, AZ?

Select your specific project to find the pro for you.

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

*The Angi rating for Radon Detection And Reduction companies in Williams, 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 Williams, 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 September 17, 2026

Find Radon detection and reduction specialists in Williams

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

Serving Williams, 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%
3 neighbors recently requested a quote
Request Quote
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 Williams, 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
3 neighbors recently requested a quote
Recommended by96%of homeowners
Request Quote
121 PRO, LLC
5.0(
2
)
Radon Gas - Testing

Serving Williams, 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
Request Quote
Avatar for 1-800 Water Damage of Prescott & North Scottsdale
1-800 Water Damage of Prescott & North Scottsdale
5.0(
5
)
Radon Gas - Testing

Serving Williams, AZ and surrounding areas

In business since 2023

Free estimates

Credit card accepted

"Fantastic. They were very quick to respond, set up testing for mold in air, and then ultimately remove the source of mold. Highly recommended. My home was tested before and after work to confirm that mold has all been removed and we are all safe."
Air Scrubber
Floor Protection
Personal Protection Equipment
Personal Protection Equipment
Completed Mitigation

+14

Response time7 hrs
Recommended by66%of homeowners
Request Quote
Radon Detection and Reduction questions, answered by experts

The cost for a radon mitigation system typically ranges from $800 to $1,500, with an average around $1,000. The final price depends on several factors, including the size of your home, the severity of the radon issue, and the type of system required. Your home's foundation type also significantly impacts the cost. For example, sealing and ventilating an unfinished basement might cost around $4,600, while encapsulating a crawl space without a foundation slab can range from $1,500 to $15,000.

Radon is a cancer-causing radioactive gas that poses serious health risks, infiltrating homes through foundation cracks and unnoticed spaces.

Mitigation can take several days depending on home setup, equipment accessibility, and achieving effective diffusion system sealed efficiency.

Radon detection is crucial as prolonged exposure to radon gas, a leading cause of lung cancer, poses significant health risks in residential environments.

Radon is the number one non-smoking cause of lung cancer in the United States, but it can cause some other concerning side effects in the meantime. If you have a raspy voice, chest pains, trouble breathing, difficulty swallowing, or any of the above, don’t hesitate to perform radon testing and install a mitigation system as soon as possible.

The Williams, 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