The only firm on this list with a York city address rather than a service radius reaching into York. Listed by Google under home inspector and carries the name of the service itself, which suggests mitigation rather than testing is the core of the business.
How high is radon in York County homes?
Radon in York County homes runs well above the rest of Pennsylvania: 52.5 percent of the 98,845 tests on record read at or above the 4 pCi/L action level, against 33.7 percent statewide. The typical York County result is 4.30 pCi/L and the average is 10.75 pCi/L. The state keeps every certified test result on its open data portal, which is where these figures come from.
| Measured | York County | Pennsylvania |
|---|---|---|
| Tests on record | 98,845 | 3,334,286 |
| Typical reading (median) | 4.30 pCi/L | 2.50 pCi/L |
| Average reading | 10.75 pCi/L | 6.00 pCi/L |
| At or above 4 pCi/L | 52.5% | 33.7% |
| At or above 10 pCi/L | 26.8% | |
| At or above 20 pCi/L | 13.1% |
One note on the statewide comparison: the DEP information page puts the statewide figure at around 40 percent, while their own published dataset computes to 33.7 percent. We use the dataset, because that is the number you can check yourself.
Why two rows for the reading. Radon results are not spread evenly. Most houses cluster low and a small number run extremely high, including one York County reading of 1,259.7 pCi/L, and those few drag every average upward. The median says what a normal house here measures, the average says how heavy the tail is. Both are in the table because quoting only one of them misleads in a different direction.
A county average still hides a great deal. Radon levels inside York County vary by a factor of more than three between municipalities, which is why a county map is a screening tool rather than a diagnosis.
| Municipality | Tests | Median | Average | At or above 4 |
|---|---|---|---|---|
| Brogue | 215 | 9.60 | 22.33 | 74.9% |
| Windsor | 862 | 8.50 | 17.72 | 66.6% |
| Dallastown | 2,298 | 7.80 | 15.74 | 66.0% |
| Felton | 941 | 7.60 | 21.28 | 65.1% |
| Seven Valleys | 1,539 | 7.50 | 17.59 | 63.1% |
| Fawn Grove | 458 | 7.00 | 15.04 | 64.6% |
| Stewartstown | 2,820 | 6.90 | 14.25 | 63.6% |
| Glenville | 600 | 6.90 | 21.30 | 60.8% |
| Airville | 414 | 6.90 | 24.55 | 67.4% |
| Jacobus | 544 | 6.60 | 16.37 | 62.5% |
| Red Lion | 5,330 | 6.10 | 13.84 | 61.0% |
| Glen Rock | 1,774 | 5.90 | 15.62 | 60.8% |
| Spring Grove | 2,999 | 5.80 | 17.51 | 58.7% |
| Wrightsville | 1,350 | 5.20 | 17.53 | 56.7% |
| Delta | 964 | 5.10 | 15.85 | 57.1% |
| Camp Hill | 689 | 5.10 | 8.83 | 57.8% |
| Mount Wolf | 1,179 | 5.00 | 13.66 | 57.4% |
| York | 35,329 | 4.30 | 9.76 | 52.7% |
| Shrewsbury | 2,126 | 4.30 | 8.71 | 52.1% |
| New Freedom | 2,723 | 4.20 | 9.27 | 51.9% |
| Thomasville | 431 | 4.10 | 8.03 | 52.0% |
| Dillsburg | 5,853 | 3.67 | 7.19 | 47.4% |
| Hanover | 11,814 | 3.60 | 10.03 | 46.9% |
| Lewisberry | 2,150 | 3.40 | 7.08 | 45.0% |
| Dover | 3,967 | 3.30 | 6.33 | 44.2% |
| Etters | 2,908 | 3.20 | 6.71 | 42.3% |
| New Cumberland | 2,066 | 3.20 | 7.80 | 43.6% |
| Manchester | 976 | 3.20 | 6.78 | 41.3% |
| Hellam | 430 | 3.10 | 10.84 | 43.3% |
| York Haven | 1,035 | 3.00 | 6.19 | 40.6% |
| Wellsville | 444 | 2.70 | 5.04 | 33.6% |
Felton averages 21.28 pCi/L and York Haven 6.19, and both sit inside the same county on the same fractured limestone and shale. Your neighbor's result tells you the geology can produce radon here. It does not tell you what is under your own slab, which is why the reading that counts is the one from your own house.
Radon exposure accumulates over years of breathing the air in the rooms you use most, so the basement you finished into an office matters more than the crawl space you never enter. Levels for all 31 York County municipalities with a meaningful sample are listed on the page covering radon levels by York County municipality.
Before a sale: a radon test is a common contingency in York County real estate contracts. If the reading comes back elevated, mitigation is usually negotiated between buyer and seller rather than blocking the sale. Get the quote in hand before the negotiation, not after.
Which certified radon contractors serve York, PA?
Five firms below work in York County and hold Pennsylvania DEP certification to mitigate radon: Absolute Radon Mitigation, SWAT Radon Mitigation, Precision Inspections & Radon Solutions, American Radon Solutions and Enviroquest. Homechek is certified to test only, and two firms do not appear in the DEP register. Ratings are Google review scores retrieved on 21 September 2026 and will drift over time. We list what each firm actually does, because radon specialists and home inspectors are not the same trade, and that distinction decides who you should call.
The largest operator in this list by review volume, describing itself as Pennsylvania's largest radon mitigation company and active since 1988. Runs sub-slab and crawl space systems, water radon testing for well users, and mitigation built into new construction. The scale cuts both ways: more installations behind them, less likelihood that the person quoting is the person installing.
Camp Hill base, roughly 35 minutes from York, and every one of its 97 Google reviews is a five star rating. Reviewers mention radon fan installation and scheduling speed most often. Combines inspection and mitigation under one roof, which is convenient but worth a question: ask who signs off on the post-mitigation test.
Mitigation specialist rather than an inspection firm that also mitigates, serving central Pennsylvania since 1991 within about a 60 mile radius of Harrisburg, which covers York. Reviewers mention sump pit sealing and radon level reduction. If your situation involves a sump pump, this is the kind of firm that deals with it routinely.
Names York explicitly in its service area alongside Hanover, Gettysburg and Dover. Offers online estimates, which is unusual in this trade and useful if you want a number before anyone visits. Broad inspection practice, so radon is one service among many rather than the whole business.
States on its own site that it is certified by the Pennsylvania Department of Environmental Protection for both testing and mitigation. Small review count compared to the others here, which means less to go on rather than anything negative.
York based inspection firm operating since 1993, listing radon testing among its services but not mitigation. Call them for the measurement that tells you whether you have a problem, then one of the mitigation firms above for the system that fixes it.
Red Lion base, ten miles southeast of York. Handles radon and mold surveys for both residential and commercial property, with infrared thermography alongside. Useful if the building is commercial, where the inspection requirements differ from a house.
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Does a radon contractor need DEP certification in Pennsylvania?
Yes. Pennsylvania requires DEP certification for anyone who tests for radon or mitigates it in a building in the state, unless they work for a certified firm. The rule sits in 25 Pa. Code Chapter 240, and it also covers the laboratories that analyze radon test devices. A Google rating tells you customers were happy. It does not tell you the installer is certified.
Ask for the certification number before you sign anything and check it against the DEP Radon Services Directory, or call the DEP Radon Division on 800-237-2366. How to verify a certification, and what each type covers, is set out on the page about PA DEP radon certification.
How does a radon mitigation system work?
A radon mitigation system uses a fan and a sealed pipe to pull soil gas from under the floor slab and vent it above the roofline, so radon never gets into the house. It does not filter the air, which is why an air purifier is not a substitute: EPA notes that air cleaners without special media do not remove radon gas. The standard approach in York County housing is sub-slab depressurization, and the crews who install radon mitigation systems here finish most jobs in under a day.
- A suction point is cut through the slab. Usually in the basement, often near an existing sump pit, chosen so the pipe run stays short and the fan ends up somewhere you do not sit.
- The radon vent pipe is routed up and out. Through the rim joist and up the exterior wall, or internally through the house to the roofline, which costs more but looks better. The vent has to discharge above the roofline, not at head height beside a window.
- The fan is mounted outside the living space. Attic or exterior wall, never inside a room you occupy, so a leak in the pipe cannot discharge back indoors.
- Openings are sealed. The sump lid, slab cracks and any exposed soil in a crawl space, because the system can only pull from below if the floor above it is reasonably tight.
- A post-mitigation test confirms it worked. This is the step to insist on. The basement radon system is not finished until a fresh measurement shows the level actually dropped.
A crawl space needs a different treatment. Instead of drilling a slab there is no slab, so the crew lays a sealed membrane over the soil and draws from underneath it. Homes with both a basement and a crawl space sometimes need two suction points, which is one of the biggest single drivers of what the job costs.
The parts of the system, which types actually get installed in York County, and how far each one cuts radon are set out on the page about how a radon mitigation system works.
How much does radon mitigation cost in York, PA?
Radon mitigation in York County costs a median of $1,150 per system, based on 986 installations recorded by the Pennsylvania DEP between 2024 and 2026. Seven in ten systems cost under $1,300 and nine in ten under $1,600. These are prices actually paid in York County, not a national estimate and not a quote for your house.
| Recorded cost, 2024 to 2026 | Price | Based on |
|---|---|---|
| York County, median | $1,150 | 986 systems |
| York County, full sub-slab system (average) | $1,279 | 834 jobs |
| York County, fan added to an existing passive pipe (average) | $770 | 143 jobs |
| Pennsylvania, all systems (average) | $1,390 | 22,552 systems |
Source: PA DEP radon mitigation dataset on the PA Open Data Portal, retrieved 21 September 2026.
Pennsylvania records the cost of every mitigation system its certified contractors install, which means York County has a public price record rather than a guess. The spread across the 986 York County systems looks like this.
| Price paid | Share of systems | Running total |
|---|---|---|
| Under $700 | 5.2% | 5.2% |
| $700 to $900 | 15.6% | 20.8% |
| $900 to $1,100 | 19.4% | 40.2% |
| $1,100 to $1,300 | 28.2% | 68.4% |
| $1,300 to $1,600 | 23.2% | 91.6% |
| Above $1,600 | 8.4% | 100% |
A quote outside that range is not automatically wrong, but it is worth asking what about your house puts it there. Your reading is rarely the reason: houses that tested under 4 pCi/L averaged $1,169 and houses above 30 averaged $1,269, so a frightening number on your report does not translate into a frightening quote.
What makes one York County house cost more than another?
The building, not the severity of your reading. Quotes for the same house vary more than people expect, and the variation is rarely about the contractor being greedy. These are the factors that genuinely move a York County price.
| Factor | Cheaper end | More expensive end |
|---|---|---|
| Foundation | Poured slab with a sump pit already in place | Stone foundation, common in older downtown York homes |
| Suction points | One point serves the whole footprint | Additions or a split level need two or more |
| Pipe routing | Straight out the rim joist and up the exterior | Routed internally to the roofline for appearance |
| Crawl space | None, or already sealed | Exposed soil needing a membrane laid and sealed |
| Existing pipe | A passive pipe is already in place and only needs a fan | Nothing in place, the full system has to be built |
Prices climbed steadily rather than in one jump. York County averaged $935 in 2019, $1,098 in 2023, $1,207 in 2025 and $1,340 across 2026 so far, so treat any figure older than about 2023 as a low estimate. The full breakdown sits on the page about what radon mitigation costs in York County.
Two or three quotes on the same scope remains the way to get a number for your own house, which is what the form on this page is for. Ask each firm to price the post-mitigation test and the fan warranty as separate lines, because that is where otherwise similar quotes tend to diverge.
One running cost that quotes often leave out: the fan runs continuously, so a professional radon installation adds a small permanent amount to your electricity bill, plus the fan itself is a wearing part that eventually needs replacing. Ask what the fan is rated for, and see the page on replacing a radon fan for the signs that one is failing.
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Where in York County can you request radon mitigation?
Anywhere in York County, Pennsylvania: quote requests are accepted from every ZIP code in the county, and the form passes yours to the firms serving that ZIP code. The firms listed on this page all work in the county, from the city of York and its suburbs to Hanover and Dover in the west, Wrightsville on the Susquehanna and the boroughs near the Maryland line.
- York
- West York
- North York
- York Township
- Spring Garden Township
- Springettsbury Township
- Manchester
- Mount Wolf
- York Haven
- Dover
- Hanover
- Spring Grove
- Seven Valleys
- Jacobus
- Red Lion
- Dallastown
- Windsor
- Wrightsville
- Shrewsbury
- Glen Rock
- New Freedom
- Stewartstown
- Delta
- Fawn Grove
- Felton
- Dillsburg
- Lewisberry
- Wellsville
Seven towns have their own page with local radon levels and recorded costs: Hanover, Dover, Wrightsville, Red Lion, Dallastown, Spring Grove and Stewartstown. Every town we cover is listed on the service area page.
Should a new York County home have radon-resistant construction?
Yes, if you are building: the passive half of a radon system costs far less to put in during construction than to retrofit later. Radon-resistant new construction means a gas permeable layer under the slab, a sheet of polyethylene over it, sealed joints, and a vent pipe running from below the slab to the roof. There is no fan. The pipe works by natural stack effect.
A house built this way is not guaranteed to be below the action level, and that is the part builders sometimes skim over. Passive systems reduce radon, they do not eliminate it. Test the finished house anyway, and if the number is still elevated, the retrofit is cheap: an electrician adds a fan to the pipe that is already there, and the passive system becomes an active mitigation system, as described on the page about activating a passive radon system.
Common questions about radon in York, PA
How much does radon mitigation cost in Pennsylvania?
Pennsylvania averaged $1,390 per system across 22,552 installations recorded from 2024 to 2026. York County runs lower, with a median of $1,150 and seven in ten systems under $1,300. A full sub-slab system averaged $1,279 here, and activating an existing passive pipe $770.
Will insurance pay for radon mitigation?
Insurance usually does not pay for radon mitigation. Standard homeowners policies treat radon as a maintenance matter rather than sudden damage, so mitigation is normally an out of pocket cost. In a sale it is more often a negotiated credit between buyer and seller.
What time of year is worse for radon?
Winter readings tend to run higher. Closed windows and a heated house create a stack effect that pulls harder on the soil underneath. A short term test taken in January can read above one taken in July in the same house, which is why long term tests give the more representative picture.
Do air purifiers clear out radon?
Air purifiers do not clear out radon. Mitigation works by changing the pressure beneath the slab so the gas never enters, while a purifier only treats air already in the room, and EPA notes that air cleaners without special media do not remove radon gas at all.
Do I need a certified radon contractor in Pennsylvania?
You need a certified radon contractor in Pennsylvania, which requires DEP certification for anyone who tests for or mitigates radon in a building, unless they work for a certified firm. Ask for the number and check it in the DEP Radon Services Directory before work starts.
How long does a radon mitigation installation take?
Most single family installations are finished within a day. The longer part is what comes after: the system needs time to draw down before a post-mitigation test can confirm the level actually dropped, so allow a few days before the result is final.