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*The Angi rating for Radon Detection And Reduction companies in Harrisburg, SD 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 Harrisburg, SD 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 June 11, 2026

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Avatar for Blackburn Foundation Repair, LLC
Blackburn Foundation Repair, LLC
4.6(
23
)

Serving Harrisburg, SD and surrounding areas

Approved

In business since 1992

Free estimates

Warranties offered

"Blackburn came out to repair my garage foundation. They were quick, efficient, and left the area in great condition."
Crawl Space Repair
Crawl Space Repair
Response time1 day
91 neighbors recently requested a quote
Recommended by80%of homeowners
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Solar Solutions - Home Facebook
0.0(
1
)

Serving Harrisburg, SD and surrounding areas

In business since 1996

Free estimates

We have been your testing and abatement source, energy audits, remodeling, weatherization, radon mitigation, testing for mold, lead and asbestos.\nStudies have shown that homes that are efficiently built or retrofitted with energy efficient measures are not only cheaper to own, but more comfortable, and quiet. We can audit you home to evaluate the performance of your systems.\n

Recommended by100%of homeowners
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Professional House Doctors
New to Angi

Serving Harrisburg, SD and surrounding areas

In business since 2006

Free estimates

Credit card accepted

We pride ourselves in providing quality work for all of our customers. Your safety in your home or office is forefront in our minds when we work. We have built several relationships with local business and homeowners that we know will last a lifetime. When looking for a company that can give you peace of mind when working or living in your space look no further then Professional House Doctor.

Response time1 day
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Radon Detection and Reduction questions, answered by experts

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.

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.

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 lifespan of a radon mitigation system depends on the type of system and its maintenance. With proper care, a system can last for many decades. Passive systems tend to last longer as they have fewer components that require replacement. Active systems, which have more moving parts like fans, generally have a shorter lifespan. For instance, water filtration devices and active pressurization systems require more frequent maintenance. While the system as a whole is durable, the radon fan in an active system typically has a lifespan of 5 to 10 years and will need to be replaced. As long as the fan is working, the mitigation system should function correctly.

The Harrisburg, SD 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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