What a radon mitigation system costs in York, PA

The York County price band, what makes a system cost more, what the fan costs to run, and the six things a quote must include.

A radon mitigation system is priced by how hard it is to get a suction point under the slab, how far the pipe has to run to get above the roof, and how many suction points the house needs to pull the whole footprint. In York and York County a standard active sub-slab system on a house with a basement runs about $875 to $2,200 installed, and most quotes land between $1,200 and $1,800. National cost guides give a similar band. The firms listed on this site are a mix of regional companies and one- or two-crew local contractors, and the local ones are usually cheaper on a straightforward basement.

Typical jobs

• Basement with a sump pit. $900 to $1,500. The sump is the suction point: seal the lid, run the pipe from it, add the fan. The cheapest and most common York County job.
• Basement, no sump, poured slab. $1,200 to $1,800. A hole is cored through the slab, a pit dug beneath it, and the pipe sealed in.
• Crawl space. $1,500 to $3,000. A plastic membrane is laid over the dirt and sealed to the walls, and the fan pulls from under it (sub-membrane suction).
• Slab on grade or split-level with multiple foundation types. $1,800 to $3,500. Often two suction points and more pipe.
• Activating a builder's passive rough-in. $500 to $1,000 for the fan, manometer and sealing, more if the rough-in has no suction pit and one has to be added.
• Fan replacement on an existing system. $300 to $600.

What pushes the price up

• A second or third suction point when the soil under the slab is tight clay and one point will not depressurize the whole footprint.
• Interior pipe routing through finished space and closets to reach the attic, versus an exterior run up the side of the house.
• A roof penetration instead of an eave termination.
• Sealing large cracks, block-wall tops and an open sump before the fan can do its job.
• Block foundations that leak air through the walls, which sometimes need block-wall suction.
• Radon in well water, a separate system at $3,000 to $6,000 for aeration or $1,000 to $2,500 for carbon.

The running cost

The fan runs continuously and draws about 50 to 90 watts, which comes to roughly $5 to $10 a month at York County electricity rates. Fans last around ten years. That is the whole maintenance budget.

What a quote should contain

A quote from a competent DEP-certified mitigator states: (1) the number and location of suction points; (2) the pipe route and where it terminates, which must be above the roof eave and away from windows; (3) where the fan goes, which must be outside the living space, in an attic, garage or outdoors; (4) what sealing is included; (5) the guaranteed result, normally under 4.0 pCi/L and often under 2.0; and (6) who runs the post-mitigation test and when. If a quote is one line and a number, ask for the rest.

Who pays in a home sale

Usually the seller, by credit or by installing before closing. See buying or selling a house with radon.

Last updated 2026-09-28. General information for the York area, not professional advice; confirm specifics with a qualified contractor or your insurer.