Radon mitigation contractors in Pennsylvania
Pennsylvania has some of the highest indoor radon readings in the country. The Reading Prong — a band of uranium-bearing granite running across the eastern and central parts of the state — pushes radon into homes at rates well above the national average, and the state has required radon professionals to be certified since 1988.
Because so many Pennsylvania homes test high, a radon result showing up during a home inspection is a routine part of buying and selling here. The good news is that the fix is well-established and local certified mitigation contractors are used to turning these around quickly. Below, find certified radon mitigation contractors by region and city across Pennsylvania.
What radon work costs
Most homes are fixed with an active sub-slab depressurization system: a sealed PVC pipe and a continuously running fan that pull radon-laden soil gas from beneath the foundation and vent it safely above the roofline. Price depends on foundation type (slab, crawl space, basement), the number of suction points needed, and how the pipe is routed. Larger homes, multiple foundations, or crawl-space encapsulation push toward the high end.
A short-term test during a real-estate transaction typically runs about $150. This tells you whether you have a problem; it does not fix one. Testing pros are home inspectors — useful, but not who you hire to install a system.
These are planning ranges, not quotes. A contractor confirms price after seeing your foundation and your radon level.
Radon questions, answered
My home sale is stuck because of a high radon test. What now?
A radon result above the EPA action level of 4.0 pCi/L commonly triggers a repair request in the inspection contingency. The fix is fast: a certified mitigation contractor can usually install a system in a single day, and a post-mitigation retest confirms the level has dropped. Most deals that pause for radon close once a system is installed and documented — buyers are reassured by a certified system plus a passing retest.
What's the difference between radon testing and radon mitigation?
Testing measures the radon level in your home (a ~$150 job done by a certified measurement pro or home inspector). Mitigation is the physical fix — installing a system that removes radon — done by a certified mitigation contractor and typically costing $800–$2,500. This directory leads with mitigation contractors because that's who you hire once a test comes back high.
How much does radon mitigation cost?
Most single-family homes fall between $800 and $2,500, with a typical cost around $1,200. Foundation type, home size, and the number of suction points drive the price. Testing is separate and much cheaper (~$150).
How does a radon mitigation system actually work?
The most common approach is active sub-slab depressurization. A contractor cores a hole through the slab, runs a sealed PVC pipe from beneath the foundation up and out above the roofline, and adds an inline fan that runs continuously. The fan creates suction under the slab so radon gas is drawn out and vented before it can enter your living space. A manometer (U-tube gauge) shows the system is working.