Radon Testing in York, PA
Testing is the only way to know your home's radon level -- the gas has no smell, no color, and no symptom you would notice before the levels are already a genuine health concern. We test York County homes for homeowners who have never tested, for real-estate transactions on a deadline, and for confirmation testing after a system has been installed or a fan replaced.
Where and when to test
Per PA DEP guidance, the basement is generally the right place to test, since radon levels are usually highest there -- or the lowest lived-in level of the house if there is no basement. DEP also recommends testing during the heating season, when windows and doors stay closed and the house is sealed up against outside air; a summer test with windows open tends to read lower than a realistic winter baseline.
Short-term vs. long-term testing
A short-term test runs anywhere from 2 to 90 days and gives a fast result -- the standard choice for real-estate transactions working against a closing date. A long-term test runs longer than 90 days and gives a more representative picture of your home's actual year-round exposure, since radon levels shift with the seasons. DEP's own guidance favors the long-term test as the more reliable option whenever the timeline allows for it, with the short-term test reserved for situations where a fast answer matters more than a perfectly averaged one.
Reading your result
The EPA's action level is 4 picocuries per liter (pCi/L): at or above that number, the EPA recommends fixing the home, and DEP recommends a second confirmation test before moving to mitigation. Between 2 and 4 pCi/L, the EPA says fixing is worth considering, not required. Below 2 pCi/L, no action is typically recommended -- though the EPA is clear that elevated levels have turned up in every radon zone, so a low first result is not a reason to skip testing altogether if you have never tested.
What to ask for
If you're hiring a certified tester rather than using a retail kit, ask for documentation your real-estate transaction or insurance will actually accept, and ask to see current DEP certification -- Pennsylvania requires it under Chapter 240 of the state code.
Frequently asked questions
Should I test in the basement or on the main floor?
The PA Department of Environmental Protection recommends testing where radon levels are typically highest -- generally the basement, or the lowest lived-in level of the house if there is no basement. If you are testing for a real-estate transaction, the buyer's inspector will usually specify the level based on the contract.
Short-term or long-term test -- which do I need?
A short-term test (2 to 90 days, usually a charcoal canister or electronic monitor) gives a fast answer and is standard for real-estate transactions with a deadline. A long-term test (more than 90 days, usually an alpha track detector) gives a more representative annual average, since radon levels shift with season and weather. DEP recommends a long-term test as the more reliable option when timing allows for it.
How much does a radon test cost?
A basic home test kit runs about $20 to $30 at hardware and home improvement stores, per DEP. Testing done by a certified radon professional, with documentation suitable for a real-estate transaction, typically costs more than a self-administered kit -- ask for the price up front.
My test came back above 4 pCi/L. What now?
DEP recommends a second test to confirm the result before deciding on mitigation, since a single reading can be affected by weather, ventilation, or test placement. If a second test also comes back at or above 4 pCi/L, DEP's guidance is to take corrective action -- typically a sub-slab depressurization system.
How often should I retest after the first time?
DEP recommends retesting roughly every two years, ideally in the basement and during the heating season when the house is sealed up tightest and radon readings run most representative.
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