Elevated radon test? We install proven mitigation systems that protect your family — and meet the requirements of any real estate transaction in South Dakota.
This means average indoor radon levels exceed 4 pCi/L, the EPA's action threshold. State law requires radon disclosure on all home sales. If your test came back elevated, mitigation is not optional.
Radon is a colorless, odorless radioactive gas that forms naturally from uranium in soil and rock. It enters homes through basement slabs and foundation cracks. Long-term exposure is the second leading cause of lung cancer in the US after smoking — and South Dakota's geology makes it one of the most affected states.
Many homeowners assume new homes are safe. They're not. Radon levels depend on soil, not construction age. Harrisburg and Tea homes built on Lincoln County soil are just as likely to test elevated as a 1970s Sioux Falls basement.
South Dakota law requires radon disclosure on all residential real estate transactions. Every home sale in the metro triggers a test — and elevated results require mitigation before or shortly after closing.
Levels above 4 picocuries per liter require mitigation. The average South Dakota home tests significantly above this threshold. A mitigation system consistently reduces levels to below 2 pCi/L.
A sub-slab depressurization system — the standard mitigation method — is installed in a single day. Post-installation testing typically confirms levels below the EPA action threshold within 24 hours.
The most effective and widely used radon mitigation method is sub-slab depressurization (SSD). It works by creating negative pressure beneath your basement slab — drawing radon gas out before it can enter your living space, and venting it safely outside.
A pipe is inserted through the basement slab and connected to a continuously running fan. The fan creates suction that pulls radon from the soil beneath the slab and routes it up and out through the roofline or exterior wall — away from any windows or entry points.
Sub-slab depressurization system
Fan draws radon from beneath the slab and vents it safely above the roofline
Most Sioux Falls installations are complete in a single day. Here's exactly what to expect.
We assess your home, review any existing test results, and recommend the right system configuration for your foundation type and radon levels.
One technician, one day. We core-drill the slab, route the piping, install the fan, and seal all penetrations. The home is fully accessible throughout.
We place a short-term test immediately after installation. Results are typically available within 48–72 hours and provided in writing.
You receive a written report documenting the system and results — accepted by lenders, real estate agents, and inspectors statewide.
We cover all of Minnehaha and Lincoln Counties. No extra charge for service calls within our coverage area.
From first-time radon concerns to real estate closings — here's what our customers experience.
"Our radon test came back at 11.2 pCi/L — nearly three times the action level. They installed the system in one day, and our follow-up test came back at 1.4. Couldn't have been easier or faster."
"We were under contract on a home sale with a tight closing deadline. They fit us in within two days, completed the install, and had written documentation ready for our lender the same week. Lifesaver."
"Very professional. They explained exactly how the system works, where the pipe would exit the house, and what to expect from the post-install test. No surprises — everything went exactly as they described."
We schedule quickly, install in one day, and provide the written documentation you need — for your family's peace of mind or your real estate closing.