From initial testing to full system installation and real estate documentation — everything you need in one place.
We install sub-slab depressurization (SSD) systems — the proven, EPA-recommended solution for elevated radon levels. The system draws radon gas from beneath your slab and vents it safely outside before it can enter your living space.
Every installation is designed specifically for your home's foundation type, slab configuration, and test results. A one-size-fits-all approach doesn't work — we assess first and install right.
Before mitigation, you need a confirmed test result. We offer short-term and long-term testing depending on your timeline and purpose — whether you're checking your own home, preparing for a real estate transaction, or verifying results after mitigation.
A significant share of our calls come directly from real estate transactions — buyers, sellers, and agents navigating an elevated radon test result under a closing deadline. We understand the timeline pressure and prioritize these jobs accordingly.
If you have a closing date and an elevated test result, call us first. We'll tell you exactly what's possible on your timeline.
Call About Your Closing →Radon fans have a typical service life of 5–10 years. If your system's warning indicator has triggered, the fan is making unusual noise, or your re-test shows rising radon levels, it's time for a service call.
If you have an existing system installed by another contractor, we can still service it. Bring us your original report and we'll assess performance.
Schedule a Service Call →Have a question that isn't here? Call us — we're happy to talk through your specific situation.
A standard sub-slab depressurization system is installed in one day — typically 3–5 hours. The home is fully accessible throughout the process. You don't need to leave, and there's no major disruption to the living space.
Properly installed sub-slab depressurization systems reduce radon levels by approximately 99% in most homes. Post-installation testing consistently shows levels below 2 pCi/L — well under the EPA's 4 pCi/L action threshold. We've never had a post-install test come back above the action level.
South Dakota law requires radon disclosure on all residential real estate transactions. If a pre-sale test shows elevated levels, most purchase agreements require mitigation. We provide written documentation accepted by lenders, agents, and title companies statewide.
A radon system consists of a PVC pipe that runs from the slab up through the home (or along an exterior wall) to a small fan near the roofline. Interior routing is more discreet — typically through a closet, utility room, or garage. Exterior routing is slightly more visible but keeps the system entirely outside the living space. We discuss options with you before installation.
Yes — radon fans run continuously to maintain the pressure differential that keeps radon from entering the home. Modern radon fans are very energy-efficient, typically using 20–90 watts — comparable to a single light bulb. Annual operating cost is generally $15–$50 depending on your electricity rate.
Yes. Radon levels depend on the soil and geology beneath the home, not its age or construction quality. New homes in Harrisburg, Tea, and Brandon have tested elevated as often as older Sioux Falls homes. South Dakota's Zone 1 designation applies regardless of build year. We recommend testing any home in the metro area.
The EPA recommends mitigation for any home testing at or above 4 pCi/L. The EPA also recommends considering mitigation for levels between 2 and 4 pCi/L, especially in homes with children. Average indoor radon levels in South Dakota frequently exceed 4 pCi/L without a mitigation system in place.
Free estimates. Most installations scheduled within the week. Written documentation provided with every job.