SERVICE — MITIGATION
If your home tested at or above 4.0 pCi/L, mitigation is the fix. Here's exactly what that means, what it costs, and what to expect.
The standard fix is sub-slab depressurization: a suction point is cored through your basement floor or slab, connected to PVC piping and a continuously running fan that pulls radon-laden soil gas from beneath the foundation and vents it above the roofline — before it ever enters your living space.
It's the method the EPA recommends because it works: properly installed systems routinely bring homes from double-digit readings to well under the action level.
| Typical cost | $900–$2,500 depending on foundation and layout |
|---|---|
| Install time | Usually under one day |
| Foundations | Basements, slab-on-grade, crawl spaces, sump/drain-tile homes |
| Operating cost | Comparable to running a small light bulb continuously |
| Verification | Follow-up radon test after the system runs |
Start with a test. If your number comes back under the action level, that's the whole answer.
Radon testing options →The classic case for sub-slab depressurization. A single suction point handles most homes; larger footprints or slabs poured in sections sometimes need a second point to reach full coverage. If the home has a sump pit, the system can often draw from the pit itself with a sealed lid — an efficient, tidy install.
Exposed-soil crawl spaces use sub-membrane depressurization: heavy plastic sheeting is sealed over the soil, and the fan draws from beneath the membrane. It's the same principle — intercept the gas before it reaches your air — adapted to the construction.
Homes with perimeter drain tile can often use it as a ready-made collection network, giving one suction point reach around the entire foundation. These are frequently the best-performing systems of all.
Plenty of Fairfield County homes mix a basement with a slab addition or crawl space. The system is designed for the whole footprint, which is exactly what the on-site assessment works out before you get a price.
Four things, mainly: the foundation type and whether more than one suction point is needed; the pipe route (a straight run up an exterior wall costs less than snaking through finished living space); the fan size your soil conditions call for; and how much sealing the slab needs. What shouldn't move the price: surprises after the quote. The assessment exists so the number you approve is the number you pay.
Modern radon fans run at a low hum most homeowners stop noticing within days. Piping can often be routed through a garage, closet, or exterior wall to keep it discreet.
Yes — older foundations sometimes need an extra suction point or additional sealing, which is exactly what the on-site assessment determines before you get your quote.
The system gets adjusted — larger fan, added suction point, more sealing — until the number comes down. The retest is part of the job, not an extra.
NEXT STEP
Call now for a straight answer on testing and pricing — no pressure, no jargon.
Call (475) 473-9647