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  • Average homeowner rating star icon5
    Average homeowner rating
  • Verified reviews icon11
    Verified radon detection and reduction services reviews

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

*The Angi rating for Radon Detection And Reduction companies in Delaware, 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 Delaware, 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 March 26, 2026

Find Radon detection and reduction specialists in Delaware

Avatar for A&J Radon Away
A&J Radon Away
5.0(
32
)

Serving Delaware, OH and surrounding areas

Approved

In business since 2017

Free estimates

Warranties offered

"This was a great experience from start to finish. They arrived on time got and got the work done with zero mess even though this involves drilling a large hole in the basement floor. The system did what it’s supposed to do and reduced radon levels to almost 0. I am very happy with this company and would highly recommended them.The price was great too."
Response time1 day
4 neighbors recently requested a quote
Recommended by93%of homeowners
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Avatar for MaGen Property Inspections and Radon Mitigation
MaGen Property Inspections and Radon Mitigation
5.0(
7
)

Serving Delaware, OH and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Great company! Price was competitive, technician showed up on time and completed the job (exterior electric Radon fan replacement) quickly. Would hire them again."
Radon Fan Installation
Radon Mitigation
5 neighbors recently requested a quote
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Avatar for PuroClean Home Savers
PuroClean Home Savers
4.7(
7
)

Serving Delaware, OH and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"My experience was great. They went above and beyond. They were quick, very professional, and I'm very pleased with them."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+12

Response time3 days
7 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Radon Pros
Radon Pros
5.0(
21
)

Serving Delaware, OH and surrounding areas

In business since 2017

Free estimates

Emergency services offered

"Radon pros was awesome...they had clear communication throughout the process and made it happen. I don't know much about radon but the tech educated me and I didn't waste a bunch of money on a below ground vacuum."
Grove City
Basement w/ no crawl
Condo
Sfh
Full basement

+55

Response time1 day
Response rate94%
Recommended by95%of homeowners
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Avatar for Radon Systems
Radon Systems
4.8(
29
)

Serving Delaware, OH and surrounding areas

In business since 1977

Free estimates

Warranties offered

"I used Radon Systems over 20 years ago in another house and even still today they provide great service for a radon mitigation system."
External Mitigation System
Sump Suction System
Encapsulate Crawl
Encapsulate Crawl
Vapor Barrier Installed In Crawl

+9

Response time8 hrs
Response rate95%
Recommended by93%of homeowners
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Residential Radon Specialists
4.7(
76
)

Serving Delaware, OH and surrounding areas

In business since 2013

Free estimates

Warranties offered

"The installation of radon system was good. They were on time and very nice and cleaned up well afterward but have not been able to get a hold of the company since then to schedule retest. The phone number indicates that voice mail is full and have texted the number with no response and have also emailed them."
Response time50 mins
Recommended by100%of homeowners
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Avatar for Air Duct Cleaning & Radon Company
Air Duct Cleaning & Radon Company
4.9(
97
)

Serving Delaware, OH and surrounding areas

In business since 1990

Free estimates

Emergency services offered

"Great and quick communication. Excellent work and extremely trustworthy!! Very happy we chose them to put in our Radon mitigation system!"
Response time7 hrs
Recommended by94%of homeowners
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Avatar for Ohio Radon Specialists, LLC
Ohio Radon Specialists, LLC
4.7(
17
)

Serving Delaware, OH and surrounding areas

In business since 2020

Free estimates

Credit card accepted

"Ohio Radon Specialists is a fantastic company to work with. They first sparked my interest by quoting me with the lowest price I received from radon companies in my area. My technician arrived on time and was very professional. My home had high levels of radon and Ohio Radon Specialists dramatically reduced the amount of radon in my home. I highly recommend them."
Response time1 day
Response rate88%
Recommended by93%of homeowners
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Avatar for Rescue Environmental
Rescue Environmental
4.9(
19
)

Serving Delaware, OH and surrounding areas

In business since 2009

Emergency services offered

"the Whole process was extremely good. We didn’t understand the whole asbestos abatement process , they explained it all very well and made us feel safe . Thanks guys"
Remodeling - General Project
Remodeling - General Project
Remodeling - General Project
Additional Photos
Additional Photos

+4

Recommended by100%of homeowners
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Showing 1-10 of 16
Radon Detection and Reduction questions, answered by experts

No level of radon is technically safe, but since it is naturally present everywhere, it is impossible to avoid entirely. 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 action to reduce radon levels if your home's test results are between 2 and 4 pCi/L or higher.

If your home has a sump pit, you can integrate it with a radon mitigation system. You can accomplish this by sealing the pump cover with an airtight lid that accommodates radon vent pipes and sump pump hoses. This allows the vent pipe to redirect the radon gas outside of your home.

Testing every 2-5 years or upon adjusting occupancy or structural changes maintains safe environments.

Your radon fan needs to operate 24/7 to be effective. The only time the fan isn't operating is during its replacement. Radon levels in the home can increase within hours if the fan stops working or something obstructs the stack vent. Fortunately, radon systems require no downtime maintenance between fan changes.

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 Delaware, 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.

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