Top-rated radon detection and reduction specialists.

Best radon detection and reduction specialists near Diamond, OH

Enter your zip and get matched with up to 5 pros

Need a pro for your radon detection and reduction project in Diamond, OH?

Select your specific project to find the pro for you.

Verified Reviews for Radon Detection And Reduction pros in Diamond, OH

*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

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

Avatar for Stoll Radon Installation llc
Stoll Radon Installation llc
5.0(
63
)
Radon Gas - AbatementRadon Gas - Testing

Serving Diamond, OH and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Warranties offered

"Tim was quick to respond to my Anji request and came out within a couple days to set up the radon testing equipment. He was knowledgeable, communicated very well, and returned promptly to read the test and explain the results. I was very pleased with this radon pro. I would highly recommend him."
Response time5 hrs
Response rate99%
19 neighbors recently requested a quote
Request Quote
Avatar for EEHI LLC
EEHI LLC
5.0(
61
)
Radon Gas - AbatementRadon Gas - Testing

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."
Electrical
HVAC
HVAC
Electrical
Fireplace

+6

Response time5 hrs
Response rate94%
21 neighbors recently requested a quote
Request Quote
Avatar for Down Home Inspections, LLC
Down Home Inspections, LLC
5.0(
15
)
Radon Gas - Testing

Serving Diamond, OH and surrounding areas

Approved

In business since 1990

Free estimates

Credit card accepted

"Russ was awesome and so pleasant to work with. I didn't really understand Radon at the time so he took his time to explain it in detail. I highly recommend his services for radon testing!"
Main Breaker panel
Live wire
Exposed wiring
Corroded piping
Electrical tape repair failed

+5

Response time3 hrs
Recommended by100%of homeowners
Request Quote
Avatar for Harner Radon Relief
Harner Radon Relief
4.9(
6
)
Radon Gas - AbatementRadon Gas - Testing

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."
Response time2 days
Response rate87%
4 neighbors recently requested a quote
Request Quote
Avatar for Radon Survey Systems, Inc.
Radon Survey Systems, Inc.
4.3(
8
)
Radon Gas - Abatement

Serving Diamond, OH and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"Very competitively priced. They even offered me a small discount to help me decide on a pro since all 3 quotes I got were about the same. Job was done professionally, neatly and on-time. Nice work."
External System Piping
Basement View of Radon Piping
Radon Mitigation Pics
Radon Mitigation Pics
Internal or Attic system

+2

Response time2 hrs
Response rate93%
Recommended by100%of homeowners
Request Quote
Avatar for Safe Space Home Services LLC
Safe Space Home Services LLC
5.0(
5
)
Radon Gas - AbatementRadon Gas - Testing

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."
Radon Mitigation
Radon Mitigation
Radon mitigation
radon mitigation
radon mitigation

+2

34 neighbors recently requested a quote
Request Quote
Avatar for Trust Worthy LLC
Trust Worthy LLC
4.2(
5
)
Radon Gas - Testing

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!!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

4 neighbors recently requested a quote
Recommended by80%of homeowners
Request Quote
Avatar for Ohio Radon Testing and Mitigation Company
Ohio Radon Testing and Mitigation Company
5.0(
6
)
Radon Gas - AbatementRadon Gas - Testing

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."
Mitigation Install
Mitigation Install
Mitigation Install
Mitigation Install
Mitigation Install

+1

Recommended by100%of homeowners
Request Quote
Avatar for Safe & Secure Home Inspections - Pgina inicial Facebook
Safe & Secure Home Inspections - Pgina inicial Facebook
4.8(
19
)
Radon Gas - Testing

Serving Diamond, OH and surrounding areas

In business since 2014

Free estimates

Credit card accepted

"Very reasonably priced, professional, thorough and responsive. All we needed was a radon inspection, but I wouldn't hesitate to hire Bill again should a need arise -- and I highly recommend him."
Safety Hazard!
Mold Growth
Broken Foundation
Roof and Chimney Inspection
Missing Flashing and Gutter

+2

Response time50 mins
Response rate92%
Recommended by94%of homeowners
Request Quote
Showing 1-10 of 19
Radon Detection and Reduction FAQs, 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.

The lifespan of a radon mitigation system depends on the type of system and its maintenance. With proper care, a system can last for many decades. Passive systems tend to last longer as they have fewer components that require replacement. Active systems, which have more moving parts like fans, generally have a shorter lifespan. For instance, water filtration devices and active pressurization systems require more frequent maintenance. While the system as a whole is durable, the radon fan in an active system typically has a lifespan of 5 to 10 years and will need to be replaced. As long as the fan is working, the mitigation system should function correctly.

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.

Your radon mitigation system may be loud because it’s time to replace it. Any sounds are usually from the inline fan that helps create the vacuum and resulting airflow. If you hear a new, loud mechanical or humming noise from your radon fan, it might be time to replace it. Most fans used in radon mitigation systems last up to 10 years, but may need to be replaced sooner.

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.

The Diamond, OH 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