Top-rated radon detection and reduction specialists.

Get matched with top radon detection and reduction specialists in Hollis, OK

Enter your zip and get matched with up to 5 pros

Need a pro for your radon detection and reduction project in Hollis, OK?

Select your specific project to find the pro for you.

Find Radon detection and reduction specialists in Hollis

Avatar for Environmental Testing & Research Laboratories, Inc

Environmental Testing & Research Laboratories, Inc

4.85(
347
)

Environmental Testing & Research Laboratories, Inc

4.85(
347
)
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

Cox Environmental

5.00(
4
)

Cox Environmental

5.00(
4
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Air Quality, Mold, Radon, and Methamphetamine Residue Inspections and Testing. YOU CAN BE ABSOLUTELY CERTAIN WE HAVE NO CONFLICT OF INTEREST and have nothing to gain from the testing results. We do not perform any remediation, mitigation, or cleaning services Testing for residential homes, multi-family units, retail centers, office buildings, commercial properties, schools, and hospitals. We have performed over 3,000 inspections in 5 years, with exceptional reviews. Cox Environmental is committed to providing all our customers with timely, courteous and thorough professional inspections, along with detailed comprehensive air quality inspection reports within 2 business days. MICRO Certified. MLCC Certified. Our mission is to treat each customer with the same attention to detail and concern that we would want ourselves. Customer service, kindness, and honesty are paramount.

Air Quality, Mold, Radon, and Methamphetamine Residue Inspections and Testing. YOU CAN BE ABSOLUTELY CERTAIN WE HAVE NO CONFLICT OF INTEREST and have nothing to gain from the testing results. We do not perform any remediation, mitigation, or cleaning services Testing for residential homes, multi-family units, retail centers, office buildings, commercial properties, schools, and hospitals. We have performed over 3,000 inspections in 5 years, with exceptional reviews. Cox Environmental is committed to providing all our customers with timely, courteous and thorough professional inspections, along with detailed comprehensive air quality inspection reports within 2 business days. MICRO Certified. MLCC Certified. Our mission is to treat each customer with the same attention to detail and concern that we would want ourselves. Customer service, kindness, and honesty are paramount.

Verified Reviews for Radon Detection And Reduction pros in Hollis, OK

*The Angi rating for Radon Detection And Reduction companies in Hollis, OK 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 Hollis, OK 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 December 30, 2025

Radon Detection and Reduction questions, answered by experts

You should have a professional test for radon every two to five years. A good rule of thumb is to get testing done every five years if you’ve never had an issue before and every two years if you have. You may also want to schedule testing if you notice symptoms of radon exposure or if you do intermittent DIY radon testing and notice changes in your levels between tests. If you have an active radon monitor, you can schedule testing if you notice levels increasing over time.

Yes, most services include testing the generator to ensure functionality. Confirm with your provider.

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 only way to determine if you have a radon problem in your home is to have professional testing done. You can buy DIY radon test kits, but these are sometimes inaccurate in certain temperatures and humidity levels, and they don’t paint the entire picture in terms of your radon exposure. Scheduling testing once every two to five years is best. You can also look out for the following symptoms, which, according to the American Cancer Society, are symptoms of radon exposure:

  • Shortness of breath

  • Cough

  • Tightness in the chest

  • Difficulty swallowing

  • Hoarseness

Results from radon testing usually take a week to process after the test period ends, with expedited services sometimes available for urgent cases.

The Hollis, OK 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

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"