*The Angi rating for Radon Detection And Reduction companies in Clayton, 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 Clayton, 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 April 26, 2026
Serving Clayton, 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"
+2
Serving Clayton, DE and surrounding areas
Approved
In business since 2008
Free estimates
Warranties offered
"I had a great experience"
Serving Clayton, DE and surrounding areas
Approved
In business since 2016
Free estimates
Warranties offered
"Bill from In & Out home inspection is a gem. He is very knowledgeable in his craft and made himself available for whenever we called with questions even on Sunday."
Serving Clayton, DE and surrounding areas
In business since 1985
Free estimates
Emergency services offered
"Chris Barcikowski was on time, cordial, professional and spent a reasonable time checking our home issues. He provided us with recommendations on the action to take to solve the water standing inside the air ducts. He did testing for possible mold conditions and siad the results should be ready for us by this Friday, 9/12.."
Serving Clayton, DE and surrounding areas
In business since 2016
Free estimates
Emergency services offered
"They have made a huge, huge, huge difference in the comfort of my 2 story 1980’s circa town home. Worth every single penny. I am now looking forward to see the electric savings too. Will report back."
+37
Serving Clayton, DE and surrounding areas
In business since 1998
Credit card accepted
"Sussex Environmental Health Consultants, LLC always answers the phone, just a good company to work with. They are receptive to our needs."
From average costs to expert advice, get all the answers you need to get your job done.
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.
The cost of a radon mitigation system depends mostly on the type of system being installed. Use this guide to learn about your options.
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.
Did your radon test come back high? Here's what you need to know about how to install a radon mitigation system to protect your home and family.
Radon can seep into your home through cracks and small openings. Here's how to get rid of radon and why you need to do it.
