Harrisburg, PA
Post-Mitigation Testing & Retesting
A mitigation system is only as good as the results it actually produces. We test after installation to confirm levels have dropped below the EPA action level, and we also test existing systems — including ones installed by other contractors — that haven't been checked in a while. The EPA recommends retesting every two years even with a working system in place.
What's Included
- Confirms your system is actually working, in writing
- Covers systems installed by other contractors
- Follows EPA-recommended retesting intervals
Common Questions
How much does radon mitigation cost in Harrisburg, PA?
Most Dauphin County radon mitigation systems cost $900–$2,300, with a standard single-family home with a basement typically running $1,000–$1,500 for a sub-slab depressurization system. More complex foundations, multiple systems, or difficult access can increase cost.
Does Dauphin County actually have a radon problem?
Dauphin County is rated EPA Zone 1 — the highest radon potential rating on the EPA's official Map of Radon Zones — driven by limestone, dolomite, and shale bedrock beneath the Susquehanna Valley. That doesn't mean every home has high levels — it means testing is genuinely worthwhile here rather than a formality, since results vary significantly from house to house even nearby.
What EPA radon zone is Dauphin County in?
Dauphin County is rated EPA Zone 1 on the agency's official Map of Radon Zones — the highest of the EPA's three radon potential zones, meaning the county's predicted average indoor screening level is above 4 pCi/L, the same level the EPA recommends fixing a home at. A Zone 1 rating reflects a county-wide prediction based on geology, soil, and existing test data, not a guarantee about any specific house — testing your own home is still the only way to know its actual radon level.
Get a free radon testing quote for your Dauphin County home
Fast scheduling, clear pricing, and results measured against the EPA action level.