DEP-Certified Radon Mitigation Contractors Serving York County
Pennsylvania law requires DEP certification for anyone who installs a radon system in your home. We checked every company below against the DEP Radon Services Directory lists dated September 1, 2026. Listing is not an endorsement, no one pays to be here, and you can call any of them directly.
Verify it yourself: DEP posts mitigators by county and by name each month at the Radon Services Directory (pa.gov, Radon Division). Ask the crew for their DEP ID card on install day. The finished system must carry a label with the installer's DEP number.
Certified as of September 1, 2026
| Company | Based in | DEP certification | Phone | Notes |
|---|---|---|---|---|
| Absolute Radon Mitigation LLC | 800 Locust Grove Rd, York 17402 | Firm #1966 (Jeffrey Schlaline #1965, Troy Richard #7244) | (717) 755-5398 | The only York-County-based certified mitigation firm. Est. 1999. BBB A+, zero complaints in 3 years. Google 4.1 (23). York Builders Association member. |
| SWAT Environmental (SWAT of PA) | Allentown (York phone line) | Firm #3567 (Dominic Romagnoli Jr. #3272, Justin Clark-Bailey #3586) | York (717) 755-7110 ยท West York (717) 252-0781 | National company; no York street address published. BBB A+. |
| Central Penn Radon, Inc. | 247 Mine Bank Rd, Wellsville 17365 (York County) | Robert Meyer Jr. #1800 | (717) 432-9575 | Installing since 1997; specializes in real-estate-transaction installs. Online reviews are mixed; ask for recent references. |
| The Mitigator, Inc. | 198 Rose Hill Dr, New Cumberland 17070 (York County) | Seymour Levine #2735 | (717) 576-9589 | Radon, mold, and restoration. Est. 2009. |
| Precision Inspections & Radon Solutions | Mechanicsburg (Cumberland County) | Firm #3355 (Jeremy Ling #2404, Connor Pealer #7544) | (717) 763-1373 | States service to Lancaster, Dauphin, Cumberland, York, and Adams. |
| Enviroquest Inc | 1738 N 3rd St, Harrisburg | Firm #1725 (mitigation); John Staz III #1512 (testing) | (717) 233-6144 | Over 20,000 systems since the early 1990s. Seven-year guarantee; works until post-test is under 4.0 at no charge. Has a dedicated York page. |
| American Radon Solutions, Inc. | Camp Hill | Firm #1418 (Tuan Nguyen #1419, Cuong Nguyen #7058) | (717) 795-9367 | Since 1991; serves a 60-mile radius of Harrisburg. Confirm York coverage when you call. |
| Radon Protection Services of Gettysburg | Gettysburg (Adams County) | Firm #0275 (Robert Anderson #1688, Matthew Giuffreda #7624) | (717) 334-3435 | Since 1995; 9,700+ systems. Closest certified firm to Hanover. Confirm York County coverage. |
Check before you hire
| Company | Status in the Sept. 1, 2026 DEP lists |
|---|---|
| Allied Home Inspections (Lancaster) | Markets a York County mitigation page and a third-party listing cites DEP #2163, but we could not find the firm by name in the current mitigation or testing lists. Ask for the ID card. |
| Yokum Mitigation Services (York) | Not in the current DEP list. A David Yokum of York appeared in the 2015 list. |
| "Radon Reduction Inc" (appears on BBB's York category page) | We could not verify any York-area firm by this name. |
Certified testers in York County (testing only)
If you want an independent test before or after mitigation, DEP's tester list for York County includes HomeChek Inc (#1631, 2575 Eastern Blvd, York, 717-764-1920), TEK Inspection Services (Dan Hoffman #3493, 118 N Manheim St, York, 717-978-0191), Isaiah Unger (#3674, York), Lewis Wertz (#3526, Hanover), and Shawn Haney (#3093, Wrightsville).
Not sure who to call? Use the vetting checklist, check the cost guide, or request a callback below and we will connect you with an independent DEP-certified pro.
Compiled September 15, 2026 from PA DEP CountyMitigation.pdf, WebMitigationAlpha.pdf, and CountyTest.pdf (all dated 09/01/2026), BBB, and company websites. Certification status changes monthly; re-check the DEP directory. Corrections: contact us.
Need a radon mitigation quote in York?
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