Radon testing & inspection in York, PA
Short-term and long-term radon measurement by DEP-certified testers and home inspectors, using continuous monitors or charcoal kits, with a written report. A tester who does not install systems gives you an independent number.
One number for York County. Tell us your test result and get pointed to a DEP-certified mitigator.
Radon testing & inspection companies
Short-term and long-term radon measurement by DEP-certified testers and home inspectors, using continuous monitors or charcoal kits, with a written report. A tester who does not install systems gives you an independent number.
Showing 10 of 12 companies
Absolute Radon Mitigation LLC
Radon-only contractor in Springettsbury Township, York, founded in 1999. Installs radon mitigation systems, replaces radon fans, runs 48-hour continuous-monitor tests and seals sump pits. States on its site that it is a PA DEP-certified mitigation firm and serves York County including York, Dover, Dallastown, Red Lion, Shrewsbury, Hanover and New Freedom.
Allied Home Inspections, LLC
Lancaster home inspection company that also performs radon testing and installs radon mitigation systems. Its radon page says it serves York, Lebanon, Berks, Dauphin and Adams Counties as well as Lancaster, and names Harrisburg, York, Elizabethtown and Ephrata. States it is DEP certified for radon mitigation.
Enviroquest
Harrisburg home inspection and radon company that installs radon mitigation systems and performs residential and commercial radon testing, alongside mold, water and sewer-scope inspections. Its York service page names York, Hanover, Dover, Wrightsville, Manchester, Lancaster, Gettysburg, Carlisle and other towns within about an hour of Harrisburg. DEP certifications #1512 (testing) and #1725 (mitigation) are printed on the site.
HOMECHEK, Inc.
Veteran-owned home and commercial inspection company on Eastern Boulevard in York, in business since 1993. Offers radon testing with results in 48 hours, plus septic, mold, water and termite inspections and sewer scopes, across central Pennsylvania and northern Maryland. Appears on the DEP certified-tester list. Testing only; it does not install systems.
ID Home Inspections LLC
Home inspection company working in Pennsylvania and Maryland, listed by the DEP under Red Lion, York County. Offers home, new-construction, commercial and rental inspections plus radon testing, sewer camera, mold sampling, water testing and lead paint inspections. Inspector holds DEP radon tester certification #3674. Testing only.
Precise Inspecting
Lancaster home inspection firm offering radon testing, radon mitigation system inspection, water testing, wood-destroying insect inspections, mold sampling and thermal imaging. Serves the greater Lancaster, Lebanon, York, Dauphin and Chester County area including Harrisburg. DEP radon certification #3295 is printed on the site. Testing and inspection only; it does not install systems.
Radon Protection Services of Gettysburg, Inc.
Gettysburg company that has tested for and mitigated radon in south-central Pennsylvania since 1995, reporting more than 9,700 systems installed. Runs continuous-monitor tests for real-estate transactions and designs and installs mitigation systems. States its technicians are DEP certified for testing and mitigation.
SWAT Environmental
National radon company with a south-central Pennsylvania operation and a York service page with a local number. Offers radon testing, mitigation system design and installation, diagnostics and new-construction systems for homes, commercial buildings and real-estate transactions. Its York page says it serves all of York County. Cites NRPP certification and AARST membership; the DEP list shows SWAT of PA as a certified mitigation firm.
TEK Inspection Services
York home and commercial inspection company established in 2021. Offers residential and commercial inspections, radon testing, water testing and thermal imaging; the inspector is InterNACHI and CCPIA certified. States DEP radon certification #3493 and a service area of York and Lancaster Counties. Testing only.
Wertz Construction
Hanover home and commercial inspection and remodelling business run by a second-generation builder licensed in Pennsylvania and Maryland. Performs radon testing alongside pre-purchase, pre-listing and commercial inspections. Prints DEP radon certification DEP3526 and NRPP ID 112405-RMP. Testing only.
Radon in York County homes
York County is an EPA Zone 1 county, the highest-risk band, and the state numbers back that up: about 40% of Pennsylvania homes test above the EPA action level of 4.0 pCi/L, and in York County the share is close to a third. Average basement readings in the county run well above the action level. The geology is the reason. The Piedmont limestone and carbonate belt under York itself, the Peach Bottom slate in the southern townships and the shale and sandstone to the north all release radon from uranium in the rock, and the gas moves up through the soil and into any house with a slab, a basement or a crawl space.
Most calls are about one of four things:
- A high test result during a home sale, where the buyer's inspector ran a 48-hour test and the number came back over 4.0.
- A homeowner test kit result that came back high after a January test.
- A system that stopped working: the manometer reads level, the fan is silent or loud, or a follow-up test is high again.
- A new house with builder piping (a passive rough-in) that needs a fan added.
What "radon mitigation" means here
In Pennsylvania anyone who tests for or mitigates radon for pay must be certified by the Department of Environmental Protection under the Radon Certification Act (Act 43 of 1987). Testing and mitigation are separate certifications, and the companies listed here fall into three groups. Mitigation contractors design and install the system, usually active sub-slab depressurization: a suction point under the slab, PVC pipe up and out, a fan that runs continuously, and a manometer that shows it is pulling. Most also test before and after and service fans. Testing-only firms and home inspectors measure radon with a continuous monitor or charcoal kit and write the report, which is what you want for an independent number, especially in a real-estate deal. Water treatment firms handle radon in well water, a separate problem that is common in rural York County.
Whoever you call, the job should end with a post-mitigation test showing the house under 4.0 pCi/L, and ideally under 2.0. A quote that does not include the fan, the manometer and a follow-up test is not a complete quote. Radon reduction, radon removal and radon abatement all mean the same thing on this site: a mitigation system, installed by someone the DEP has certified.
Not sure who to call?
One number for York County. Tell us your test result and get pointed to a DEP-certified mitigator.
(223) 21-RADONRequest a quote onlineor email hello@radonmitigationinyork.com
Nearby areas
The same directory, filtered to companies that say they take jobs in each town.