Radon Testing
Accurate 48-hour radon tests for York homes, real estate transactions and post-mitigation checks.

Local radon specialists in York County
RM York helps York County homeowners, buyers and sellers understand their radon levels and lower them with well-designed, tested radon systems. Every job starts with the numbers and ends with a post-mitigation test you can keep.
Why we focus on radon
RM York was established in 2026, with an office at 54 W Market St in downtown York, to provide focused radon services for the city and surrounding York County communities. The idea was simple: a radon system should be designed around the house it goes in, installed cleanly, and proven with a test.
York County radon varies from street to street. A fieldstone basement in a city rowhome may need careful sealing and a stronger fan. A block-wall basement in Springettsbury or Red Lion often has a sump pit that can become the suction point once it is sealed. Newer homes in Dover and Shrewsbury may have a passive pipe that only needs a fan. That is why we start with radon testing and a foundation assessment before recommending a radon mitigation system installation.
Many York homes already have radon systems, and those systems age. Fans wear out, sump lids get left open, and pipes get bumped during renovations. We handle radon fan replacement and radon system repair for systems installed by anyone. Our guide to radon levels in York County explains why testing every home matters.
Clear communication matters. Your written scope explains the suction points, fan, pipe route, discharge location, price, post-mitigation test and any guarantee before we begin.
The work we do
RM York is a local radon team serving York County homes and businesses with radon testing, system installation, fan replacement, repair and basement radon work.
Five focused radon services
We measure radon, design the right system for your foundation, install it to standards, keep existing systems running and prove the result with a test.
Accurate 48-hour radon tests for York homes, real estate transactions and post-mitigation checks.
Custom sub-slab depressurization systems that lower radon and vent it safely above the roofline.
Replace a silent, noisy or worn-out radon fan and get your radon mitigation system pulling again.
Diagnose and repair radon mitigation systems with alarms, leaks, cracked pipes or high retest results.
Lower basement radon with sub-slab suction, sealed sump pits and systems built for finished lower levels.
How we work
These standards keep every system accurate, safe, understandable and matched to the real conditions under your home.
Every recommendation starts with a reliable radon number. If your test is questionable, we retest before we design a system.
Slabs, sump pits, block walls, stone foundations and crawl spaces each need the right suction method and fan size.
Fans stay outside living space, exhaust goes above the roofline, and every system is sealed, labeled and fitted with a manometer.
A post-mitigation radon test shows the new level, and retest reminders help you keep it low for years.
How information is checked
Our pages combine local York County experience with independent public guidance. External sources do not imply a partnership, sponsorship or endorsement.
Trusted source statement: radon health, testing, action level and mitigation claims are checked against federal and Pennsylvania state guidance before publication.
Federal guidance on radon health risk, testing, the 4.0 pCi/L action level and radon reduction methods.
Visit the EPA radon resource (opens in a new tab)State guidance on radon in Pennsylvania homes and certification of radon testers, mitigators and laboratories.
Visit the PA DEP radon resource (opens in a new tab)Claims must be verifiable
We publish third-party proof only after it can be checked. This prevents placeholder reviews, invented ratings and unsupported badges from misleading visitors.
No customer review or star rating is published until the customer statement and permission to display it have been verified.
Certification numbers, association memberships and partner badges are displayed only when the issuing organization and current status can be confirmed.
The business name, phone, email, coverage area and service process are shown so visitors can check who they are contacting.
Contact and coverage
We cover every York neighborhood plus Hanover, Red Lion, Dallastown, Dover, Shrewsbury, Spring Grove, Glen Rock, Manchester, New Freedom, Seven Valleys, Stewartstown, Windsor, Wrightsville, York Haven.
Phone: (717) 275-0074
Our team is often out on appointments. Call ahead before planning an in-person visit.
York ZIP codes: 17401, 17402, 17403, 17404
RM York · Local radon specialists
Start with your radon test result. We explain your options, design the right system for your foundation, and give you a written price before work begins.