Sub-Slab Depressurization
The most common system for York basements and slab homes. A suction point below the slab creates a vacuum that draws radon away from the house.
Active sub-slab depressurization for York homes
Radon Mitigation System Installation York, PA
Radon Mitigation System · Sub-Slab Depressurization · Radon Vent Pipe Installation
Radon mitigation system installation in York, PA lowers radon by stopping it before it enters your living space. We core a suction point through the basement slab, create a pit in the soil below, and connect it to a sealed PVC pipe and an inline radon fan. The fan pulls radon from beneath the foundation and vents it above the roofline, and a post-mitigation radon test confirms the new level.
Free estimateStandards-based installationPost-mitigation test
4.0
pCi/L EPA action level
fix homes at or above this level1 Day
Typical installation
for most York homes14
Nearby communities
plus every York neighborhood
PA DEP certified radon mitigation
Who you are calling
Radon Mitigation Systems Designed for York Foundations
No two foundations move soil gas the same way. A 1920s York city rowhome with a fieldstone basement, a 1970s split-level with block walls in Springettsbury, and a new build with a poured basement in Dover all need different suction points, fan sizes and pipe routes. That is why every radon mitigation system starts with a design visit, not a price off a sheet.
We check the slab, sump pit, drain tile and wall construction, then run a sub-slab communication test to see how far suction will reach under the floor. The results decide where the suction point goes, how many are needed, which radon fan will do the job quietly, and whether the pipe runs through the garage, a closet or up the exterior wall.
- Communication testing We measure how suction travels under your slab before choosing the fan and suction points.
- Fan outside living space Radon fans go in the attic, garage or on the exterior, never inside the basement or living area.
- Exhaust above the roofline The vent discharges above the eave and away from windows, doors and neighboring openings.
- Labeled and monitored Every system gets a U-tube manometer, a system label and clear instructions for checking it.
When to call
Signs Your York Home Needs a Radon Mitigation System
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
Radon Test at or Above 4.0 pCi/L
The EPA recommends fixing any home that tests at or above 4.0 pCi/L. A reliable short-term or long-term result at that level is the clearest reason to install a system.
- 02
Results Between 2.0 and 4.0 pCi/L
The EPA suggests considering radon mitigation in this range, especially if family members spend a lot of time in the basement or lower level.
- 03
A Real Estate Inspection Found High Radon
A high radon result during a York County home sale is common. A system installed before closing, followed by a post-mitigation test, keeps the transaction moving.
- 04
A Passive Pipe With No Fan
If your home has a capped radon pipe in the basement or attic but no fan, the system is passive and may not lower radon enough on its own.
The right method for the home
Radon Mitigation Systems We Install
The EPA considers active soil depressurization the most effective way to reduce radon. We choose the version that fits your foundation.
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Sump Pit and Drain Tile Suction
Where a home has perimeter drain tile, sealing the sump pit and drawing suction through it can reach the entire foundation.
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Crawl Space Sub-Membrane Systems
Heavy plastic sheeting sealed over a dirt or gravel crawl space floor, with suction below the membrane, keeps radon out of the home above.
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Block Wall Suction
For hollow block foundations with high radon inside the wall cores, suction can be applied to the wall along with the slab.
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Multiple Suction Points
Large homes, additions and slabs with poor gravel below may need more than one suction point tied to the same fan.
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Passive System Activation
Many newer York homes were built with a passive radon pipe. Adding a radon fan often lowers radon dramatically.
What you get
What Our Radon Mitigation System Installation 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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Design Visit and Written Scope
Suction points, fan model, pipe route, fan location, discharge point and price are agreed in writing before installation.
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Suction Point and Radon Fan
We core the slab, excavate a suction pit, seal the pipe connection and install a correctly sized radon fan outside the living space.
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Sealing and Labeling
Accessible cracks, the sump lid and other openings are sealed, and the system is labeled with a U-tube manometer installed.
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Post-Mitigation Radon Test
After the system runs for at least 24 hours, a radon test confirms the reduction and gives you documentation for your records.
How the job runs
Our Radon Mitigation System Installation Process
Every Radon Mitigation System Installation York PA job follows a home-specific plan, from the first radon number to the verified result.
- 1 Step 1
Review the Radon Test
We confirm the radon result and test conditions so the system is designed around reliable numbers.
- 2 Step 2
Assess and Design
We inspect the foundation, run a sub-slab communication test and agree on the pipe route and price with you.
- 3 Step 3
Install the System
We core the suction point, run the PVC pipe, mount the radon fan, wire the disconnect, seal openings and label the system.
- 4 Step 4
Verify the Result
A post-mitigation radon test runs after at least 24 hours of operation, and we review the result with you.
RM York · Local radon specialists
High Radon in York? Get a Radon Mitigation System Estimate
Send us your radon test result and a few details about your foundation. We will schedule a design visit and give you a written price.
Upfront pricing
Radon Mitigation System Cost in York, PA
Typical ranges for complete, tested radon mitigation systems in York County homes.
Most popular
Standard Sub-Slab System
$1,150+ single basement or slab
- Communication test and system design
- One suction point, radon fan and exterior or garage route
- Manometer, label and accessible sealing
- Post-mitigation radon test included
Multi-Point System
$1,600+ larger or divided foundations
- Two or more suction points on one fan
- Higher-capacity radon fan when needed
- Sump and crack sealing
- Post-mitigation radon test included
Basement plus Crawl Space
$2,200+ combination foundations
- Sub-slab suction for the basement
- Sealed vapor membrane over the crawl space
- Sub-membrane suction tied into the system
- Post-mitigation radon test included
Final price depends on foundation type, sub-slab communication, pipe route and electrical access, and is confirmed in writing before installation.
Health and household safety
A Safer Home After Radon Mitigation
A properly installed radon mitigation system runs quietly around the clock and is designed to keep radon out of your breathing zone.
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Radon Vented Above the Roof
Exhaust is discharged above the roofline and away from windows, doors and air intakes so radon does not re-enter the home.
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Fan Outside Living Space
Positive-pressure pipe sections stay outside the living space, so a leak cannot push radon into rooms you use.
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Easy to Monitor
The U-tube manometer shows at a glance that the fan is creating suction. An optional alarm can alert you to a problem.
Before, during, after
Preparing for Your Radon System Installation
Before We Arrive
- Clear a path to the planned suction point, sump pit and any walls where the pipe will run.
- Move stored items at least three feet away from the basement slab work area.
- Make sure we can reach the garage, attic access or exterior wall on the planned pipe route.
- Share your radon test report and let us know about pets or anyone sensitive to dust or noise.
During the Visit
Most installations take one day. Coring the slab and cutting pipe makes some noise and dust for short periods, which we control with vacuums and drop cloths. We seal openings, wire the fan disconnect and clean up before we leave.
After the Work
The fan runs continuously from day one. After at least 24 hours of operation, a post-mitigation radon test confirms the new level. We show you how to read the manometer and recommend retesting at least every two years.
Keep radon levels low
Keep Your New Radon Mitigation System Working
Radon systems need very little attention, but a few checks go a long way.
- 01
Look at the U-tube manometer monthly. Uneven liquid levels mean the fan is creating suction.
- 02
Never turn the radon fan off, and keep the electrical disconnect switch on at all times.
- 03
Reseal the sump lid after any sump pump service so the system keeps pulling from below the slab.
- 04
Retest your home every two years, and after renovations, additions or finishing the basement.
York, PA local insight
Radon Mitigation Systems for York County Homes
York County sits on Piedmont bedrock and soils that naturally release radon, and the county is in EPA Zone 1, the highest radon potential category. That does not mean every home is high, but it does mean high results are common enough that radon mitigation system installation is one of the most requested home safety upgrades in the area.
The foundation decides the system. Many York homes have poured or block basements with a sump pit and perimeter drain tile, which often lets one suction point reach the entire slab. Older city homes with fieldstone walls and uneven floors may need more sealing and careful fan sizing. Split-levels and homes with additions frequently combine a basement, a slab and a crawl space, and each area may need its own suction point or membrane.
Before we recommend a system, make sure your radon number is reliable. A professional radon testing visit gives you hourly data and documented conditions. If your home has a sump pit or a finished lower level, our basement radon mitigation page explains sump sealing and interior pipe options.
Already have a system that is not keeping radon low? A radon system repair visit or a radon fan replacement is often faster and less expensive than a new install. To see how the suction below your slab actually works, read how sub-slab radon mitigation works, or return to the RM York home page.
Independent guidance: review the EPA guide to the health risk of radon (opens in a new tab) and the Pennsylvania DEP Radon Division (opens in a new tab) . These resources complement your radon test results and the written scope for your home.
Local radon standards
Why Choose Us for Radon Mitigation System Installation in York
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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Standards-Based Installation
Fan placement, discharge height, labeling and sealing follow Pennsylvania DEP requirements and ANSI/AARST mitigation standards.
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Clean, Considered Pipe Routes
We plan interior and exterior routes that work well, look tidy and respect finished spaces and curb appeal.
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Proven by Testing
Every system is verified with a post-mitigation radon test, and guarantee terms are written into your agreement.
Where we work
Radon Mitigation System Installation Service Area Across York County
RM York serves every York neighborhood plus Hanover, Red Lion, Dallastown, Dover, Shrewsbury, Spring Grove, Glen Rock, Manchester, New Freedom, Seven Valleys, Stewartstown, Windsor, Wrightsville, York Haven. Call with your address to confirm the next available appointment.
- Hanover 17331
- Red Lion 17356
- Dallastown 17313
- Dover 17315
- Shrewsbury 17361
- Spring Grove 17362
- Glen Rock 17327
- Manchester 17345
- New Freedom 17349
- Seven Valleys 17360
- Stewartstown 17363
- Windsor 17366
- Wrightsville 17368
- York Haven 17370
York ZIP codes served
- 17401
- 17402
- 17403
- 17404
RM York · Radon Mitigation System Installation
54 W Market St, York, PA 17401
Monday to Friday: 8:00 AM to 6:00 PM
Straight answers
Radon Mitigation System Installation FAQs
Need help with a detail not covered here? Call (717) 275-0074.
(717) 275-0074 Most single-foundation York homes cost about $1,150 to $2,000 for a complete sub-slab radon mitigation system with a post-mitigation test. Multiple suction points, crawl space membranes and interior routes can raise the price.
The EPA reports that active soil depressurization systems can reduce radon levels by up to 99 percent. Most properly designed systems bring homes well below the 4.0 pCi/L action level, and a post-mitigation test confirms your result.
The radon fan is installed outside the living space, usually on the exterior wall, in the garage or in the attic. The pipe route is chosen during the design visit and agreed with you before installation.
A correctly sized and mounted radon fan produces a low hum that most homeowners rarely notice. Exterior and attic installations are typically the quietest inside the home.
Most residential radon fans draw roughly 20 to 150 watts depending on the model, which is similar to a light bulb or two running continuously.
A documented, tested radon mitigation system answers a common buyer question during inspections. Keep the post-mitigation test and system details with your home records.
Free estimate · Written quote
Install a Radon Mitigation System in York, PA
Lower your radon level with a custom sub-slab radon mitigation system, a quiet radon fan and a post-mitigation test that proves the result. Call now for a free estimate.