Accurate Radon Control Inc.
(215) 541-1557✓ Verified October 4, 2026 on the official state list dated October 1, 2026, double-checked against a second state list.
Radon in ZIP code 18074
Last updated
ZIP 18074 lies entirely in Montgomery County, Pennsylvania. EPA’s radon zone for this area: Zone 1, highest potential.
Zone 1 Montgomery County, PA · 100% of the ZIP’s land area
Predicted average indoor screening level above 4 pCi/L.
What this means for homes in 18074
EPA built its zone map county by county in 1993, so every address in 18074 shares Montgomery County’s prediction. The zone is a starting point, not a measurement of your house. Zone 1 areas like this one have a high share of homes above 4 pCi/L, so testing is a priority.
Next: read how to test your home, then check the number with the level calculator.
Radon professionals for 18074
These professionals are listed for Montgomery County that 18074 falls in. Featured listings are paid placements and are labelled.
Airotox
(215) 247-6869✓ Verified October 4, 2026 on the official state list dated October 1, 2026, double-checked against a second state list.
David Yorgey
(215) 510-6762✓ Verified October 4, 2026 on the official state list dated October 1, 2026, double-checked against a second state list.
Radon Technology & Enviromental Inc.
(610) 495-2810✓ Verified October 4, 2026 on the official state list dated October 1, 2026, double-checked against a second state list.
Radon-Rid LLC
(610) 222-2273✓ Verified October 4, 2026 on the official state list dated October 1, 2026, double-checked against a second state list.
Thomas Hollingsworth
(484) 460-9697✓ Verified October 4, 2026 on the official state list dated October 1, 2026, double-checked against a second state list.
Timothy J. Gentry
(215) 672-8529✓ Verified October 4, 2026 on the official state list dated October 1, 2026, double-checked against a second state list.
Armored Home Inspections, LLC
(610) 352-2212✓ Verified October 4, 2026 on the official state list dated October 1, 2026, double-checked against a second state list.
Brody Mcguinness
(610) 471-5958✓ Verified October 4, 2026 on the official state list dated October 1, 2026, double-checked against a second state list.
Christopher D'arcy
(215) 968-1933✓ Verified October 4, 2026 on the official state list dated October 1, 2026, double-checked against a second state list.
Christopher Eslinger
(267) 902-6421✓ Verified October 4, 2026 on the official state list dated October 1, 2026, double-checked against a second state list.
Craig Lennox
(610) 277-4953✓ Verified October 4, 2026 on the official state list dated October 1, 2026, double-checked against a second state list.
See all 27 on the Montgomery County page →
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Nearby ZIP codes in Montgomery County
Pennsylvania radon help
PA Dept. of Environmental Protection, Bureau of Radiation Protection (717-783-3594) can help with test kits, local data and credentialed professionals: www.dep.pa.gov/Business/RadiationProtection/RadonDivision/Pages/Radon-in-the-home.aspx.
Frequently asked questions
What is the radon zone for ZIP code 18074?
ZIP 18074 lies in Montgomery County, which EPA places in Zone 1 (highest potential).
Should I test for radon in 18074?
Yes. EPA recommends testing every home regardless of zone, because radon varies from house to house. Fix the home if a confirmed result is 4 pCi/L or higher, and consider fixing between 2 and 4 pCi/L.
Are there certified radon professionals near 18074?
This page lists 27 professionals for the county that 18074 falls in, each checked against the state's official certification or licence list.
Free checklist · PDF
Radon Test Checklist
A one-page, step-by-step checklist for running a home radon test right the first time, and what to do with the number.
- Short-term vs. long-term test: which to use
- Closed-house conditions and where to place the kit
- What 2, 4 and 8 pCi/L mean and when to fix
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