Harrisburg, PA
Radon Testing in Harrisburg & Dauphin County
Testing is the only way to know your home's actual radon level — you can't tell by looking, and levels vary significantly from one house to the next even on the same block, because local bedrock and soil permeability change quickly across the Susquehanna Valley. We offer short-term tests (48–96 hours, common for real estate transactions) and long-term tests (90+ days, the most accurate picture of year-round exposure) for homes across Dauphin County.
What's Included
- Short-term testing for real estate transactions and fast answers
- Long-term testing for the most accurate year-round reading
- Results measured against the EPA's 4.0 pCi/L action level
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.