Radon Services in Johnson County, Kansas

Radon work gets sold as a single product, and it is not. A basement house with an open sump needs a different job from a dirt-floor crawl space, and a house with a capped passive stack already installed needs little more than a fan. The five pages below describe what each job actually involves and what changes the price.

Radon Testing in Johnson County, Kansas

Certified short-term, long-term and continuous monitor testing — plus honest advice about when a $10 DIY kit is the better buy.

How long does a radon test take? A short-term test runs 2 to 7 days with the house kept closed. A long-term test runs more than 90 days and gives a better picture of your yearly average. A continuous monitor used for real estate work typically runs 48 hours and produces an hour-by-hour record.

Radon Mitigation in Johnson County, Kansas

Sub-slab depressurization done properly — sealed entry points, correctly sized fan, discharge above the roofline, and a verification test that proves it worked.

How does radon mitigation work? A suction point is cut through the basement slab and connected to sealed pipe running outside, where an inline fan pulls air from the gravel beneath the foundation. That creates lower pressure under the slab than inside the house, so soil gas is drawn out and discharged above the roofline instead of entering.

Radon Fan Replacement & System Repair

Radon fans fail silently after 5 to 10 years. We test the existing system, replace the fan, and verify the level actually came back down.

How do I know if my radon fan has failed? Look at the manometer, the small clear U-shaped tube on the radon pipe. If the liquid sits level in both columns, the system is not pulling suction and the fan has likely failed. A working system shows the two columns at clearly different heights.

Crawl Space Radon Mitigation

Sub-membrane depressurization for dirt-floor crawl spaces — sealed polyethylene barrier, suction beneath it, and a verification test.

Can you mitigate radon in a crawl space? Yes, but the method differs from a basement. Because there is no slab to cut into, a heavy polyethylene membrane is sealed across the crawl space floor and up the walls, and suction is drawn from beneath that membrane. This is called sub-membrane depressurization.

Radon Testing for Real Estate Transactions

48-hour continuous monitor testing with an hour-by-hour report, scheduled around inspection deadlines, plus straight answers on who usually pays.

Is a radon test required to sell a house in Kansas? Kansas does not require a radon test to sell a home. Testing is negotiated between buyer and seller and is commonly requested during the inspection period. Kansas does require that radon testing performed for hire be done by a KDHE-certified professional.

What every job here includes

• A diagnostic visit before any number is quoted
• One fixed written quote, itemised by suction point
• Sealing of the sump pit, slab cracks and slab-to-wall joint
• A manometer so you can confirm suction at a glance
• A post-mitigation verification test proving the level dropped below 4.0 pCi/L

That last item is the deliverable. A system with no verification measurement is a pipe and a fan of unproven effect.