York County's Local Radon Specialists
Radon Mitigation in York, PA
- Work done by PA DEP-certified radon pros
- Re-test after every system we install
- Home sale deadlines welcome: we fit your closing date
Radon Is Common in York County. Fixing It Is Routine.
Radon mitigation in York, PA is not a rare job. It is one of the most common home repairs in the county. York sits in EPA Radon Zone 1, the highest risk group in the country. PA DEP test records put the average York basement close to 10 pCi/L. The EPA says to fix a home at 4 pCi/L or higher.
Radon is a gas you can't see or smell. It comes up from the soil and rock under your house and builds up inside. The Surgeon General calls it the second leading cause of lung cancer in the United States, after smoking. The good news is that a radon system can cut the level in most homes to 2 pCi/L or below.
Keystone Radon Mitigation tests your home, explains your number, and installs a system that brings it down. Then we re-test, so you have the result in writing. Call (717) 714-3616 to book a test or a free estimate.
A York County Company, Not a Call Center
Keystone started in a Spring Garden Township basement. Our founder, Mark Stambaugh, grew up in York. When he bought his first home, the inspection found radon at more than three times the EPA action level. He had never heard of radon before that day.
He learned fast. He saw how often York families got a scary number during a home sale, then got rushed into a system with no clear price.
Keystone was built to do it the other way. We test first and give you a written price. Then we re-test after the install so you know it worked.
We are a small local team from York, Red Lion, Dover and Hellam. We answer our own phones, and we know the roads, the old stone foundations and the new builds across the county.
Our Radon Services
Most jobs follow the same path: test the air, fix the problem, then keep the system running. We handle all three.
Radon Testing
Short-term, long-term and real estate radon tests for York homes. We place the test, read the result and tell you what it means in plain words.
Learn about Radon TestingRadon Mitigation System Installation
A sub-slab system with a sealed pipe and a quiet fan that pulls radon from under your home and vents it above the roof. Most installs take one day.
Learn about Radon Mitigation System InstallationRadon Fan Replacement & System Repair
Dead fan, loud fan or a flat manometer? We find the cause, replace the fan if needed and re-test to confirm your levels are back down.
Learn about Radon Fan ReplacementHow Radon Mitigation in York, PA Works: Test, Fix, Re-Test
- Test. A short-term test runs at least 48 hours. A long-term test runs 90 days or more and gives a better yearly average. If you already have a result from a home inspection or a kit, send it to us.
- Design and install. We check your foundation, test how air moves under the slab, and pick the best spot for the pipe. Most York homes get a single-suction sub-slab system. Crawl spaces get a sealed plastic sheet with a suction point under it.
- Re-test. The post-install test starts at least 24 hours after the fan turns on. You get the before and after numbers in writing.
- Keep it running. Every system gets a U-tube manometer, a small gauge on the pipe that shows the fan is pulling air. Glance at it once a month. The EPA also says to re-test every two years.
Radon Mitigation Across York County
Radon levels vary from house to house, even on the same street. York County sits on limestone, dolomite and slate, and cracks in that rock let radon rise into basements and crawl spaces. That is why your neighbor's low test does not tell you anything about your home.
We test and install across York County. That includes York Township, Springettsbury, Spring Garden, Dover, West Manchester, Manchester and Windsor. We also cover Red Lion, Dallastown, Shrewsbury, Hanover, Spring Grove, Wrightsville, Columbia, Dillsburg and the towns in between.
Why York Homeowners Choose Keystone Radon
Local People, Local Homes
We live here, and we know York houses. A 1920s row home in York city, a split-level in Dover and a new build in Windsor Township each need a slightly different plan.
Certified Work You Can Check
Pennsylvania law says anyone who tests for or fixes radon for the public must be certified by the PA Department of Environmental Protection. Every job is done by a PA DEP-certified radon pro, and you can check any contractor on the DEP list or by calling the Radon Hotline at 800-237-2366.
A Number in Writing
We don't stop at "the fan is on." We re-test after every install and give you the before and after results. If a system misses the target, we adjust it.
Clear Prices Up Front
Most York radon systems cost between $875 and $2,200. We give you a written price after we see the home. No surprise add-ons on install day.
Radon Help for Our York Neighbors
About 40% of Pennsylvania homes tested by the DEP come in above 4 pCi/L. That means most streets in York County have a few homes that need a fix, and many owners don't know it yet.
We talk with home buyers and sellers every week, plus the agents who work with them. Many of them only learn about radon during a sale. We would rather you hear about it early. January is National Radon Action Month, and it is a good time to test.
FAQ: Radon Mitigation in York, PA
How much does radon mitigation cost in York, PA?
Most York homes pay between $875 and $2,200 for a radon mitigation system. A basic single-suction system on a basement or slab sits at the low end. Large homes, crawl spaces and homes with more than one foundation type cost more. We give a written price after we look at your home.
Is radon really high in York County?
Yes. York County is in EPA Radon Zone 1, the highest risk group. PA DEP test records put the average York basement near 10 pCi/L, well above the EPA action level of 4 pCi/L. Levels vary a lot from house to house, so every home should be tested.
How long does it take to install a radon system?
Most radon systems in York homes go in within one day. Crawl spaces and homes with more than one foundation can take a bit longer. The follow-up test starts at least 24 hours after the fan turns on, and results come back within a few days.
Will my house pass the radon test for a home sale?
A working system brings most homes below 4 pCi/L, and often to 2 pCi/L or below. We re-test after the install and give you the results in writing, which you can share with the buyer, seller or lender. Tell us your closing date when you call.
Do radon contractors need to be certified in Pennsylvania?
Yes. Pennsylvania's Radon Certification Act requires anyone who offers radon testing or mitigation to the public to be certified by the PA DEP. You have the right to see proof of that certification. Call the PA DEP Radon Hotline at 800-237-2366 to check any contractor.
Get in Touch
High radon test or a home sale on a deadline: talk to a local York County crew today. Free estimates and straight answers.