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Verified Reviews for Radon Detection And Reduction pros in Timmonsville, SC

*The Angi rating for Radon Detection And Reduction companies in Timmonsville, SC 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 Timmonsville, SC 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 December 22, 2025

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

Avatar for All American Environmental Services, LLC
All American Environmental Services, LLC
5.0(
200
)
Radon Gas - Abatement

Serving Timmonsville, SC and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"Was called by this company regarding my concern for the level of radon gas in our home. They went above and beyond to help me with suggestions on what to do and through test kits I purchased online, I determined we had be very little radon gas. Although I didnâ t need their services they were beyond helpful!"
Radon Mitigation System
Radon Mitigation System
Radon Mitigation System
Radon Mitigation System
Radon Mitigation System

+4

Response time7 hrs
87 neighbors recently requested a quote
Recommended by91%of homeowners
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Avatar for SWAT Environmental, Inc.
SWAT Environmental, Inc.
4.8(
10
)
Radon Gas - Abatement

Serving Timmonsville, SC and surrounding areas

In business since 2002

Free estimates

Credit card accepted

"Had them come out to install a Radon Mitigation Fan. Service was fast and the installer was extremely knowledgable. He was in an out within an hour and the radon dropped from a 4 to a 0.59! Extremely happy with the result. Price wasn't cheap by any means but definitely fixed our problem."
Recommended by100%of homeowners
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Avatar for Summit Engineering, Laboratory & Testing, P.C
Summit Engineering, Laboratory & Testing, P.C
4.0(
7
)
Radon Gas - Testing

Serving Timmonsville, SC and surrounding areas

In business since 2003

Emergency services offered

Credit card accepted

With years of experience serving the area, we are your solution for all your environmental contracting, engineering, testing and oversight needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We make sure to develop a lasting relationship, so that the next time service is needed there will be no question who to call. Call us today, so we can discuss your needs and make a plan that fits your budget. Satisfaction guaranteed!

Response time1 day
Response rate90%
Recommended by100%of homeowners
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Environmental Service Group
New to Angi
Radon Gas - Testing

Serving Timmonsville, SC and surrounding areas

In business since 2010

Free estimates

Credit card accepted

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! We are family owned and operated, so please let us know how our family can take care of yours! \n \n

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Radon Detection and Reduction FAQs, 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.

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, radon mitigation systems do not decrease home value or make a home harder to sell. In areas where homes experience similar radon exposure risks, a radon mitigation system is viewed as an improvement. Potential homebuyers often opt to buy a home with a radon mitigation system already installed to reduce the risk of cancer for their families.

Abatement includes sealing entry points and venting with systems that reduce radon levels below recommended EPA limits. It is handled by certified professionals.

You can vent radon out of your house sometimes by simply opening a window, but it won’t remove the source, and will likely rise above recommended levels quickly. A professional will be needed to assess your home, and determine the best strategy for radon removal. Active radon sump pumps and soil depressurization systems are often used to forcefully vent the radon from your home.

The Timmonsville, SC homeowners’ guide to radon detection and reduction services

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