Leaks and Cracked Pipe
Split polyvinyl chloride (PVC) pipe, pulled joints and loose couplings let the fan draw from the wrong place, which starves suction under the slab.
Radon mitigation system service and repair
Radon System Repair York, PA
Radon Mitigation System Repair · Radon Alarm Going Off · High Radon After Mitigation
An existing system can look perfectly fine and still be failing you. Alarms chirp. Manometers sag. Pipe cracks behind a wall, or a plumber leaves the sump lid loose. Then the next test comes back higher than the one before it. A proper repair starts with diagnosing the whole run, from the suction point under the slab to the discharge above your roof, then fixing what is actually broken and confirming both the suction and the radon level. Radon Mitigation York is a PA DEP-certified firm, and our own crew does that work.
Free estimatePA DEP-certified mitigation firmPost-mitigation test
4.0
pCi/L EPA action level
fix homes at or above this level1 Day
Typical installation
for most York homes
PA DEP certified radon mitigation
Who you are calling
Radon System Repair for Any York System
These systems are simple machines, and that is exactly why small faults slip by. One loose coupling. A hairline crack in an attic pipe. A sump lid nobody resealed. Any of them lets the fan pull easy basement air instead of hard-won soil gas. The manometer may still show something. Your radon level climbs anyway.
So a good repair call is a diagnosis first. We check the fan, the gauge, the alarm and the power feed, walk the pipe looking for leaks and damage, and inspect the seals at the slab, sump and walls. Then all of it gets held up against your test history. You get a written list of what we found and what each fix costs before anyone picks up a tool.
- Whole-system diagnosis Fan, pipe, seals, gauge, alarm and discharge all get checked, not just the part making noise.
- Any installer, any age Our certified crew repairs systems other companies built, including old ones with no paperwork left.
- Brought up to standard Missing labels, low discharge points and fans sitting inside living space get corrected.
- Verified at the end Suction gets confirmed on the spot, followed by a follow-up radon test.
PA DEP data
What a Working York County System Achieves
- Median radon before → after
- 12.0 → 1.0 pCi/L
- Systems below 4.0 afterward
- 97.5%
- Systems reported to PA DEP, 2024 to 2026
- 749
- Median new system cost, 2024 to 2026
- $1,150
Radon fans typically last 5 to 10 years, so a system that has run that long is due for a check. If a retest comes back at 4.0 pCi/L or higher, or the manometer reads level, the system needs attention.
Source: Pennsylvania DEP, data.pa.gov. Retrieved October 21, 2026.
When to call
Signs Your System Needs Repair
Radon cannot be seen or smelled, so the clues are in your test results, your system and your foundation. Note your latest radon number and when the test was taken.
(717) 275-0074 - 01
The Alarm Is Sounding
A system alarm almost always means the pressure switch has stopped sensing suction. The fan may be dead, a pipe may be open, or the switch itself may have failed.
- 02
A Retest Came Back Above 4.0 pCi/L
When a house with a working system still tests at or above 4.0 picocuries per liter (pCi/L), or 148 becquerels per cubic meter (Bq/m³), something is wrong with the suction, the sealing, or the original design.
- 03
You Can See Damage to the Pipe
Cracks, pulled joints, sagging runs, missing straps or a pipe knocked sideways during a remodel all cut performance.
- 04
The Sump Lid Is Loose or Gone
Plumbers and pump swaps often leave the radon seal off. An open sump hands the fan easy basement air instead of soil gas.
The right method for the home
Radon System Problems We Repair
Nearly every failure falls into one of a few buckets. Each has a clear fix once somebody finds it.
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Broken or Missing Seals
An unsealed sump lid, new slab cracks and gaps along the floor-wall joint all bleed off suction and let radon back in.
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Alarms and Manometers
False alarms, dead pressure switches, cracked gauge tubing and gauges that went missing years ago get repaired or replaced.
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Discharge and Code Problems
Exhaust that stops below the eave or sits too close to a window gets extended above the roofline to meet current standards.
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Water Sitting in the Pipe
Condensation or rain pooling in a low spot chokes airflow and shortens fan life. Correcting the slope and drainage fixes it.
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Systems That Never Worked
When radon stayed high from day one, we measure how far suction actually reaches and add points or a stronger fan.
What you get
What Our Radon System Repair Includes
Every job includes all of the following. Nothing here is an extra added on once we are already at your home.
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Complete System Inspection
Fan, pipe, seals, sump, gauge, alarm, disconnect and discharge point, inspected from the slab to the roof.
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Suction and Leak Testing
Suction in the pipe gets measured, and leaks get tracked down at the joints, couplings, slab penetration and sump lid.
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Repairs Built to Standard
Approved work should use radon-rated materials and follow Pennsylvania Department of Environmental Protection (DEP) and ANSI/AARST requirements.
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Written Findings and a Retest Plan
You should get a summary of what was found, what was fixed, and when to run a follow-up radon test.
How the job runs
Our Radon System Repair Process
Every repair visit follows a home-specific plan, from the first radon number to the verified result.
- 1 Step 1
Tell Us What Changed
Send your ZIP, test results and what you are seeing. Our PA DEP-certified team reviews it and calls you.
- 2 Step 2
Diagnosis
We test suction, chase leaks, inspect the seals and the discharge, and confirm the fan and alarm both work.
- 3 Step 3
Fix What Is Broken
Once you approve their written price, pipe, seals, alarms, discharge or fan faults get repaired to current standards.
- 4 Step 4
Confirm and Retest
Suction gets verified on the manometer, and a follow-up radon test documents the level.
Free estimates · PA DEP-certified radon mitigation firm
System Acting Up? Book a Repair Visit
Tell us what you are seeing: an alarm, a flat gauge, visible damage, or a test result that went the wrong way. Our certified crew will call to set up a diagnostic visit.
Upfront pricing
Radon System Repair Cost in York, PA
Typical costs York homeowners see to diagnose and repair an existing radon system. We confirm your price in writing.
System Diagnostic
$150 typical inspection visit
- Fan, pipe, seal and alarm inspection
- Suction and leak check
- Written findings with repair pricing
Most popular
Seal and Pipe Repair
$250+ the most common repairs
- Sump lid resealed or replaced
- Cracked pipe, joints or couplings repaired
- Reachable slab cracks sealed
- Manometer checked or replaced
System Upgrade
$600+ discharge, alarm or suction work
- Discharge extended above the roofline
- Extra suction point or a stronger fan
- Alarm added or replaced
- Follow-up radon test recommended
Ask us whether the diagnostic fee can be credited toward a repair done on the same visit when you get your quote. Fan replacement is usually priced on its own.
Health and household safety
Why Repairs Should Not Wait
A leaking or damaged system can look like it is working perfectly while your radon level quietly climbs.
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Increases You Cannot See
A system with leaks may still move the gauge without pulling nearly enough from under the slab to hold you below the action level.
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Leaks on the Pressure Side
Cracks past the fan on an older, badly placed system can blow radon-rich air straight into an attic, a garage or a room.
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Discharge Points Too Low
Exhaust ending near a window, a door or a deck can pull radon back inside or dump it where your family sits outdoors.
Before, during, after
Getting Ready for the Visit
Before the Visit
- Pull together your most recent radon results and any paperwork from whoever installed the system.
- Open access to the sump, the suction point, the manometer and the full pipe route, attic hatch included.
- Note when the alarm started or when the gauge changed, plus any recent plumbing or remodeling.
- Make sure our crew can get to the disconnect switch or the breaker feeding the fan.
During the Visit
A diagnostic visit usually runs about an hour. Plenty of seal and pipe repairs get finished the same day once you approve the written price. The fan goes off briefly while the line is being worked on.
After the Work
Suction gets confirmed on the manometer and we walk you through what was repaired. Then book a follow-up radon test so you hold a documented result showing the system is doing its job again.
Keep radon levels low
Avoiding the Next Repair
Most radon system repairs could have been caught with a thirty-second monthly look.
- 01
Read the manometer once a month and jot the number down, so a slow drift stands out.
- 02
Ask plumbers and sump pump installers to reseal the radon cover before they leave the house.
- 03
Protect exposed pipe in the garage and basement from getting hit during storage or a remodel.
- 04
Retest every two years, and after any foundation, plumbing or basement finishing work.
York, PA local insight
Radon System Repair Across York, PA
Radon mitigation has been routine in York County for decades, which means a lot of houses here came with a system already attached. Some were installed by previous owners, some by companies that closed years ago, some by the builder. A fair number were never fully sealed, or discharge lower than today’s standards allow. Others got bumped, cut or disconnected during a basement renovation somewhere along the way.
The county sits in Environmental Protection Agency (EPA) Zone 1, the highest radon potential category on the EPA map of radon zones (opens in a new tab), which is what makes a working system matter so much. A system that has quietly lost its pull lets the level climb back toward the original number. There is no obvious sign at all until somebody runs a test. That is precisely why the EPA Consumer’s Guide to Radon Reduction (opens in a new tab) recommends retesting a mitigated home at least every two years.
If the diagnosis lands on the fan itself, radon fan replacement is usually a quick and inexpensive fix. Houses with open sump pits, new floor cracks or finished lower levels tend to need the sealing methods covered on the basement radon mitigation page. And when the original design was never built to reach your whole foundation, we may recommend an upgrade modeled on a fresh radon system installation.
Once the repairs are finished, book radon testing to document where you ended up. Curious why two houses on the same street can test so differently? Read the guide to radon levels in York County. Or head back to radon mitigation in York to book a free estimate with our certified crew.
Local radon standards
Why Choose Our Certified Crew for Radon System Repair
We combine accurate radon data, a system designed for your foundation, clean installation and a follow-up test that proves the result.
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PA DEP-Certified Crew
Repairing a radon system is mitigation work under 25 Pa. Code § 240. We are a PA DEP-certified mitigation firm, and our own crew does the repair.
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Every System Type
Sub-slab, sump-based, crawl space membrane and block wall systems, built by all kinds of installers over the years, can be repaired.
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Straight Repair or Replace Advice
We price both options on paper when an upgrade might be the better spend than a repair.
Where we work
Where We Repair Radon Systems
We cover York and its bordering neighborhoods: West York, North York, East York, Valley View, Grantley. Call with your address to confirm the next available appointment.
- West York 17404
- North York 17404
- East York 17402
- Valley View 17402
- Grantley 17403
York ZIP codes served
- 17401
- 17402
- 17403
- 17404
Radon Mitigation York
805 E Prospect St, York, PA 17403
Mon to Fri: 8:00 AM to 6:00 PM · Saturday: 9:00 AM to 2:00 PM
Straight answers
Radon System Repair York PA FAQs
Need help with a detail not covered here? Call (717) 275-0074.
(717) 275-0074 Most alarms sound when the pressure switch stops sensing suction. The usual causes are a failed fan, a tripped breaker or switched-off disconnect, a pipe that came apart, or an alarm that has simply worn out. A diagnostic visit from our certified crew sorts out which.
Leaks in the pipe, an unsealed sump lid, fresh slab cracks, a fan that is too weak, or suction that never reached far enough under the slab can all leave you above 4.0 pCi/L. Every one of those can be found and corrected.
Every system settles at its own number, so there is no single right answer. What matters is that the liquid stays uneven and the reading holds steady. Write it down after installation, and get the system checked if it goes flat or shifts noticeably.
Yes. Our certified crew diagnoses and repairs radon systems in York regardless of who installed them or how many owners ago that was.
Most systems only need targeted repairs and run fine for years afterward. When the original design simply cannot reach enough of your foundation, we give you a written comparison of repairing versus upgrading.
Free estimate · Written quote
Get Your Radon Mitigation System Fixed in York, PA
Alarms, leaks, damaged pipe and disappointing retests all have clear fixes. Send us your ZIP and what you are seeing, and our PA DEP-certified crew will call with a free quote.
Sources
- Pennsylvania DEP, Radon Test Results, September 1986 to Current (data.pa.gov)
- Pennsylvania DEP, Radon Mitigation System Year, 1987 to Current (data.pa.gov)
- U.S. EPA, Consumer's Guide to Radon Reduction
- U.S. EPA, Radon publications (A Citizen's Guide to Radon, Home Buyer's and Seller's Guide)
- AARST, ANSI/AARST radon standards
- Pennsylvania Code, 25 Pa. Code Chapter 240, Radon Certification
Data retrieved October 21, 2026. Links, dates and methods for every source are on our sources and resources page.