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Verified Reviews for Radon Detection And Reduction pros in Claymont, DE

*The Angi rating for Radon Detection And Reduction companies in Claymont, DE 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 Claymont, DE 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 30, 2026

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

Avatar for Radon Technology & Environmental, Inc.
Radon Technology & Environmental, Inc.
4.8(
318
)
Radon Gas - Abatement

Serving Claymont, DE and surrounding areas

Approved

Super Service Award Winner

In business since 1980

Free estimates

Emergency services offered

"great, from the first visit from Bruce to evaluate my radon problem, giving me suggestions & an estimate, everything went smoothly. They did the work today 8/9. I had other companies give me a quote & they did not compare with Radon Technology. Very professional & courteous. I would highly recommend them"
Radon System
Response time9 hrs
77 neighbors recently requested a quote
Recommended by96%of homeowners
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Avatar for Lawson Home Services, LLC
Lawson Home Services, LLC
4.4(
38
)
Radon Gas - AbatementRadon Gas - Testing

Serving Claymont, DE and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"It was a system that was needed to reduce radon in our basement"
Insulated Storage Deck
Insulated Storage deck with sturdy insulation retention dam around the perimeter.
Attic insulated to R60 TruSoft Cellulose
Chimney properly air sealed and wrapped with rockwool
Additional Photos

+2

Response rate100%
2 neighbors recently requested a quote
Recommended by85%of homeowners
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Avatar for In and Out Home Inspections, LLC
In and Out Home Inspections, LLC
4.8(
90
)
Radon Gas - Testing

Serving Claymont, DE and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

Here at, In and Out Home Inspections, LLC, we pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

Response time7 hrs
44 neighbors recently requested a quote
Recommended by94%of homeowners
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Avatar for Mid Atlantic
Mid Atlantic
4.9(
18
)
Radon Gas - Testing

Serving Claymont, DE and surrounding areas

In business since 1985

Free estimates

Emergency services offered

"Chris was WONDERFUL! I just purchased a home and wanted to have a mold inspection done for peace of mind. Chris took time to explain the process and put my fears at ease with his vast knowledge. He reviewed the test results with me prior to closing which gave me the peace of mind I needed to confirm I was making a good purchase and great investment. I highly recommend Mid Atlantic Commercial Residential Real Estate Solutions. VERY PROFESSIONAL AND COURTEOUS!!"
Crawl Space
Crawl Space
Crawl Space
Crawl Space
Recommended by100%of homeowners
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Avatar for SWAT Environmental, Inc.
SWAT Environmental, Inc.
4.4(
24
)
Radon Gas - Abatement

Serving Claymont, DE and surrounding areas

In business since 2002

Free estimates

"The Technician Tom was very educated and took time to answer my questions to which I all ready new the answers to. This was my test to his knowledge before we got started on the job. H was very good explaining the operation of the system to us, which helped my wife hear it from a different person other then myself. Workmanship is very neat and clean and a very professional job. I hail form a service background of 35 years and can say Tom was an excellent customer service person."
Recommended by91%of homeowners
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Avatar for All States Air Duct Pro
All States Air Duct Pro
3.1(
236
)
Radon Gas - AbatementRadon Gas - Testing

Serving Claymont, DE and surrounding areas

In business since 1995

Free estimates

Emergency services offered

"Hired vendor to perform the coupon deal.  Found mold in the unit; they tested and cleaned the unit, and duct work.  They were courteous, well informed.
"
Before & After Air Duct Cleaning
Recommended by49%of homeowners
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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.

While DIY testing is possible, abatement generally requires professional installation to ensure efficacy and meet safety standards.

No level of radon is technically safe, but since it is present everywhere, complete avoidance is impossible. 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 preventative measures if your home's radon levels are between 2 and 4 pCi/L or higher.

No, air purifiers are not an effective way to reduce or remove radon. Radon is a radioactive, inert gas that cannot be filtered by standard air purifiers, which are designed to capture particulates like dust and mold. While an air purifier can improve indoor air quality by removing other pollutants, it should not be relied upon for radon. The only effective solution for high radon levels is a dedicated radon mitigation system.

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

The Claymont, DE 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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