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

Avatar for Blackburn Foundation Repair, LLC
Blackburn Foundation Repair, LLC
4.6(
23
)
Radon Gas - AbatementRadon Gas - Testing

Serving De Smet, SD and surrounding areas

Approved

In business since 1992

Free estimates

Warranties offered

Blackburn Foundation Repair has been providing the best in basement waterproofing, crawl space and foundation repair, concrete leveling, and radon mitigation in South Dakota, and Eastern Wy, since 1992. We offer a variety of solutions for the multitude of issues that result from below grade construction throughout South Dakota. Thousands of homes, businesses and government agencies have been serviced by our trained professional installers throughout South Dakota, and Eastern Wy. We are proud to say we have over 900 reviews with 4.8 stars!

Crawl Space Repair
Crawl Space Repair
Response time1 day
90 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Huron Handyman
Huron Handyman
5.0(
4
)
Radon Gas - AbatementRadon Gas - Testing

Serving De Smet, SD and surrounding areas

Approved

In business since 2008

Free estimates

Small jobs welcome

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!

Radon Mitigation!
Radon System
Radon System
Lower Radon Shown
Lowered Radon Levels

+2

Response time12 hrs
8 neighbors recently requested a quote
Recommended by50%of homeowners
Aire Aware
5.0(
1
)
Radon Gas - AbatementRadon Gas - Testing

Serving De Smet, SD and surrounding areas

In business since 2021

Free estimates

Credit card accepted

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of quality cleaning and janitorial services. You will find us to be competitively priced with close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

Response time20 mins
Recommended by100%of homeowners
Radon Detection and Reduction FAQs, answered by experts

The cost to replace a radon fan ranges from $300 to $600 for the fan itself, with installation adding an additional $200 to $500. Overall, the total cost for replacement can range from $500 to $1,100, depending on factors such as the fan model, home size, and local labor rates. If the fan is part of a larger radon mitigation system, the price may be higher.

Mitigation reduces radon levels, protecting your health and complying with safety standards.

If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.

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.

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 De Smet, 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.