Your test came back high. The good news is that radon is one of the most fixable problems a house can have. A properly designed mitigation system usually brings levels down within a day of being switched on and keeps them there for years.

What a high result means, and what it doesn't

The EPA's action level is 4.0 pCi/L (picocuries per liter, the unit radon is measured in). A reading at or above that means the home should be fixed. It does not mean the house is unsafe to be in tonight, and it does not mean something is wrong with the house. It means the soil under it releases radon and the foundation lets some of it in, which is true of a large share of homes in York County. The fix is mechanical and well understood.

Between 2.0 and 3.9 pCi/L the EPA suggests considering mitigation. We are honest about this range. If someone sleeps on the lowest level or you spend real time in a finished basement, a system is worth it. If not, a long-term test can help you decide. We will not sell a system to a house that does not need one.

How radon mitigation works

Nearly every system we install is a form of sub-slab depressurization. We core a hole through the basement slab, excavate a small pit beneath it, and connect a PVC pipe that runs up and out of the house, usually to a fan mounted outside or in the attic. The fan creates gentle suction under the slab, so radon in the soil is pulled into the pipe and vented above the roofline before it can enter the house. The soil gas is diluted harmlessly in the outside air.

Sealing matters as much as suction. We seal the joint where the pipe enters the slab, cap the sump pit (the hole in the basement floor where a pump removes groundwater) with an airtight lid, and close large cracks and openings so the fan pulls from the soil rather than from your basement air. The result is a system that works quietly in the background and costs about as much to run as a light bulb.

A system designed for your foundation

Basement slab

The most common York County foundation and the most straightforward to mitigate. One suction point (the hole where the pipe draws from the soil) is usually enough, but larger or sectioned slabs may need two connected to the same fan.

Crawlspace

Exposed soil in a crawlspace is sealed with a heavy membrane, and the fan draws from underneath it. This is called sub-membrane depressurization, and it also cuts moisture and musty air.

Slab-on-grade

Homes without a basement are mitigated through the slab from a closet, garage, or utility area, with the pipe routed up through the house or along an exterior wall.

Mixed foundations

Many older York homes, twins, and additions have a basement under one part and a crawlspace or slab under another. We connect each area to the system so the whole footprint is covered by one fan.

What's included

Suction point and pit

Cored through the slab with a clean, sealed collar. Two points where the slab needs it.

Sealed penetrations

Slab joint, sump lid, major cracks, and crawlspace membrane, all sealed so the fan pulls from the soil.

Quiet inline fan

Sized to your slab and soil, mounted outside or in the attic, never in living space.

Vent above the roofline

Thick-walled Schedule 40 PVC routed straight and plumb, terminating where the exhaust can't re-enter the home.

System gauge

A U-tube manometer, a simple fluid gauge on the pipe, shows at a glance that the fan is running and pulling.

Post-mitigation test

A 48-hour continuous monitor test after installation, included, to confirm the new level in writing.

What affects the price

We give one fixed price in writing after a short site visit, and the estimate is free. The number is driven by a handful of things.

Factor	Why it matters
Foundation type	A single basement slab is the simplest. Crawlspaces need membrane, and mixed foundations need more than one connection.
Slab size and soil	Large slabs or tight, clay-heavy soil may need a second suction point or a stronger fan.
Pipe route	A short exterior run costs less than an interior route through closets and the attic, which some homeowners prefer for looks.
Sump and drainage	An open sump pit or French drain (a gravel drain channel along the inside of the foundation) needs a sealed lid and sometimes its own connection.
Electrical	The fan needs a nearby outlet or a new circuit run by a licensed electrician.

Installation day, start to finish

Most systems take one working day. We confirm the route with you, protect floors and finishes, core the slab, set the pipe and fan, seal everything, and run the system before we leave. You get a walk-through of the gauge and the paperwork. A few days later we come back to place the post-mitigation monitor, and you receive the new result in writing. See what a clean installation looks like.

After the install

Our goal on every job is a result under 4.0 pCi/L, and most homes land well under 2.0. If the post-mitigation test does not confirm it, we adjust the system at no charge until it does. The fan runs continuously and costs a few dollars a month in electricity. We recommend a retest every two years and any time you notice the gauge has changed.

One honest recommendation, one fixed price, one follow-up test. That is how every mitigation job with us works.

Request your free estimate or call 717-555-0123.

Common questions about mitigation

Will the system be noisy?

The fan is about as loud as a refrigerator, and it lives outside or in the attic. Inside the house you will not hear it.

How long does the fan last?

Radon fans commonly run ten years or more. When one wears out it is a straightforward swap, and the gauge will tell you.

Where we work