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Verified Reviews for Radon Detection And Reduction pros in Alton, MO

*The Angi rating for Radon Detection And Reduction companies in Alton, MO 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 Alton, MO 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 October 07, 2025

Find Radon detection and reduction specialists in Alton

Avatar for Ozark Radon Gone Corp.
Ozark Radon Gone Corp.
5.0(
24
)
Radon Gas - TestingRadon Gas - Abatement

Serving Alton, MO and surrounding areas

In business since 2021

Free estimates

"Brain is a professional at installing a radon mitigation fan! He was meticulous! Very thankful we hired him to help us. Radon is dropping!"
Response time7 hrs
Response rate85%
3 neighbors recently requested a quote
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Avatar for SWAT Environmental, Inc.
SWAT Environmental, Inc.
4.5(
52
)
Radon Gas - Abatement

Serving Alton, MO and surrounding areas

In business since 1988

Free estimates

Credit card accepted

"I would definitely recommend this company to anyone!!! I hired them and the job was done nicely, Dan O'Brien was the technician who took care of the project and he did an excellent job, he answered all of my questions and explained to me everything related to Radon gas. When he finished setting everything up and the job was completed all the working area looked super clean and the installation looks just like it is part of the house and that has been there forever. This is what I call a Perfect and Complete execution of a Radon gas mitigation project."
Recommended by97%of homeowners
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HASS Consulting LLC
5.0(
4
)
Radon Gas - Testing

Serving Alton, MO and surrounding areas

In business since 2023

Free estimates

Credit card accepted

"I was extremely happy with the Quality Air Test that Mr Clark provided. It was reasonably priced and done effectively and efficiently… Results were received in a timely manner as he explained. He answered any questions I had and was professional and polite… I highly recommend HASS Consulting…"
Response time1 day
Recommended by75%of homeowners
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Radon Detection and Reduction questions, answered by experts

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.

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.

Your radon mitigation system may be loud because it’s time to replace it. Any sounds are usually from the inline fan that helps create the vacuum and resulting airflow. If you hear a new, loud mechanical or humming noise from your radon fan, it might be time to replace it. Most fans used in radon mitigation systems last up to 10 years, but may need to be replaced sooner.

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.

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 Alton, MO 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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