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

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

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Avatar for All American Environmental Services, LLC
All American Environmental Services, LLC
5.0(
195
)

Serving Johnston, SC and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"Alan was excellent. He explained everything about Radon and the Radon system we needed. He took the time to map out the best place to install our Radon system. We really appreciated his knowledge of Radon and the radon system. Alan will be our permanent Radon person. I highly recommend Alan and his company, you will not be disappointed !!!!!!!"
Radon Mitigation System
Radon Mitigation System
Radon Mitigation System
Radon Mitigation System
Radon Mitigation System

+4

Response time7 hrs
82 neighbors recently requested a quote
Recommended by93%of homeowners
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Avatar for SWAT Environmental, Inc.
SWAT Environmental, Inc.
4.8(
10
)

Serving Johnston, 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
)

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

Radon is the number one non-smoking cause of lung cancer in the United States, but it can cause some other concerning side effects in the meantime. If you have a raspy voice, chest pains, trouble breathing, difficulty swallowing, or any of the above, don’t hesitate to perform radon testing and install a mitigation system as soon as possible.

Radon enters your home when warm air begins to rise and exits through the roof, creating a vacuum that pulls cooler air from under the foundation. Part of that air is radon, which is an invisible, odorless gas that develops naturally when radioactive particles are deep within the ground. Those particles usually come from decaying matter in soil and rocks.

Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter. 

Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.

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.

The fan that pulls the radon out of the air needs to run continuously, so you may see an increase in your electric bill once you install the mitigation system. Additionally, you may see an increase in your heating or cooling bills, as the fan can cause some loss of hot or cool air.

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

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