*The Angi rating for Radon Detection And Reduction companies in Diamond, OH 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 Diamond, OH 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 30, 2026
Serving Diamond, OH and surrounding areas
Approved
Super Service Award Winner
In business since 2020
Free estimates
Warranties offered
"Tim Stoll is an experienced and knowledgeable person, in the areas of radon testing and mitigation. He is conscientious, diagnoses problems, and finds solutions. I highly recommend Stoll Radon Installation LLC."
Serving Diamond, OH and surrounding areas
Approved
Super Service Award Winner
In business since 2022
Free estimates
Warranties offered
"Super customer service! Everything was totally explained to me and what needed to be done on installation. Brett was very informative & by the time he explained everything to me, I didn't have any questions. Brett was very professional but also easy to talk to. I love to support local businesses & EEHI LLc is that kind of company. All work was guaranteed. I strongly suggest you book an appt. with EEHI. My radon count went from a 10 to a .02 when he came back for final reading! I feel so much safer now! Super company & Brett was fantastic! Book with this company because they are so honest!! Becky B."
+6
Serving Diamond, OH and surrounding areas
Approved
In business since 1990
Free estimates
Credit card accepted
"Very friendly, honest, prompt. Took the time to explain what was being done, how testing was done, answered all my questions. Would definitely recommend."
+5
Serving Diamond, OH and surrounding areas
Approved
In business since 2021
Free estimates
Warranties offered
"Terrific experience. Highly recommended. Professional. Answered all our questions. Great to deal with."
Serving Diamond, OH and surrounding areas
Approved
In business since 1987
Emergency services offered
Warranties offered
"Adam and Nick arrived on time and performed the fan installation quickly and efficiently. The men acted as a team and helped the job to go faster. After seeing how the job went, we asked Adam to look at another project and after hearing his diagnosis and estimate contracted with him to do another job."
+70
Serving Diamond, OH and surrounding areas
Approved
In business since 2025
Free estimates
Credit card accepted
"Contractor was good communicator, friendly, professional, thorough, punctual, knowledgeable."
+2
Serving Diamond, OH and surrounding areas
Approved
In business since 2018
Free estimates
Warranties offered
"I'm a realtor & have used Trust Worthy LLC many times!! Always great friendly service. Work always done as stated & on time or even sooner! Would definitely recommend!!"
+1
Serving Diamond, OH and surrounding areas
In business since 2018
Free estimates
Warranties offered
"Type of service was radon gas abatement"
Serving Diamond, OH and surrounding areas
In business since 2020
Free estimates
Emergency services offered
"Very professional and friendly. Answered all my questions patiently. Problem appears to be solved."
+1
Serving Diamond, OH and surrounding areas
In business since 2014
Free estimates
Credit card accepted
"Bill was wonderful and has our highest recommendations. He answered every call and replied to every message promptly, with knowledgeable responses. He was early to the inspection, took the time not only to inspect our new house thoroughly (no rushed feel), but also answered all of our questions as first-time home buyers in a very personable manner. He even inspected the roof despite the rain! Pricing was very reasonable and included all of the work we needed (added radon and pest). His thorough report came as promised later that day, and he answered follow-up questions we had afterward. We felt confident in our decision to move forward with our home purchase because of Bill's outstanding work. It shows that Bill really cares about his work and enjoys what he does. Excellent service, thank you!"
+2
From average costs to expert advice, get all the answers you need to get your job done.
The cost of a radon mitigation system depends mostly on the type of system being installed. Use this guide to learn about your options.
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.
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.
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.
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.
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.
