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*The Angi rating for Radon Detection And Reduction companies in Greenwood, 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 Greenwood, 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 May 28, 2025

Find Radon detection and reduction specialists in Greenwood

Avatar for Lawson Home Services, LLC
Lawson Home Services, LLC
4.4(
38
)
Radon Gas - AbatementRadon Gas - Testing

Serving Greenwood, 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 Greenwood, DE and surrounding areas

Approved

In business since 2016

Free estimates

Warranties offered

"Bill explained the whole process of the inspections, answered all my questions and was very through. I would definitely recommend him and his company!"
Response time7 hrs
44 neighbors recently requested a quote
Recommended by94%of homeowners
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Avatar for SWAT Environmental, Inc.
SWAT Environmental, Inc.
4.4(
24
)
Radon Gas - Abatement

Serving Greenwood, 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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Radon Detection and Reduction questions, answered by experts

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.

You'll need to test your home for radon after installing the mitigation system, then again every two years. If radon remains elevated, contact a licensed radon professional, either the contractor who installed the system or a different one, and have them evaluate the system. They may need to make some changes to improve its effectiveness and performance.

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.

There are steps you can take as a homeowner to remediate radon yourself. While a radon reduction professional can make the biggest impact in your home, you can make efforts to improve radon levels on your own by sealing cracks, increasing ventilation, and testing for radon regularly.

The average radon mitigation system uses about 876 kWh of electricity per year, although the exact amount of electricity used will vary depending on the size of the radon fan. Once the system is installed, the annual increase to your energy bill could range from $30 to $300 per year, again depending on the size of the fan.

The Greenwood, 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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