The short answer
- Median cost
- $1,150
- Average cost
- $1,203
- Typical range
- $700 to $1,600
- Based on
- 986 systems
Those four figures cover York County installations recorded between 2024 and 2026. The typical range holds about 86 percent of jobs: 5 percent came in under 700 dollars and 8 percent above 1,600, with 2 percent above 2,000 where a crawl space, a stone foundation or multiple suction points was involved.
National cost guides usually quote something like 800 to 2,500 dollars with an average near 1,200. The midpoint is close to the York County figure, but the range is much wider because it blends metropolitan markets with rural ones. Pennsylvania is one of the few states where you do not have to accept a national range, because the actual prices are a matter of public record.
What people actually paid
Prices cluster tightly. More than two thirds of York County installations landed between 700 and 1,300 dollars, and the middle of the market sits at 1,150. The long tail above 1,600 exists, but it is thin.
Use that shape rather than a single number. If your quote is 1,250 dollars you are in the busiest part of the market. At 1,900 you are in the top two percent, which can be entirely justified by your house, but it is a fair thing to ask about.
Get free quotesFree and without obligation. Your details go only to firms serving your ZIP code.
Your radon reading barely changes the price
Most people assume a frightening number on the test report means a frightening quote. The record says otherwise. Sorting York County installations by the pre-mitigation reading gives almost a flat line.
| Reading before mitigation | Installations | Average cost |
|---|---|---|
| Under 4 pCi/L | 33 | $1,169 |
| 4 to 8 | 216 | $1,180 |
| 8 to 15 | 331 | $1,221 |
| 15 to 30 | 209 | $1,193 |
| Above 30 | 148 | $1,269 |
A house that tested above 30 pCi/L paid about nine percent more than one that tested under 4. That is the difference between a standard fan and a higher capacity one, not a different project. The reason is structural: the crew digs the same suction point, runs the same pipe and seals the same slab whether your reading is 5 or 55.
What this means practically is that a high reading is a health argument for acting quickly, not a financial one for delaying. The bill does not scale with the fear.
What does change the price
The single largest factor is whether anything is already in the ground. Houses built with a passive pipe under the slab need only a fan and the wiring to run it, and that job costs roughly 40 percent less than building the system from nothing.
| Type of work | Installations | Average cost |
|---|---|---|
| Sub-slab ventilation, built from scratch | 834 | $1,279 |
| Activating an existing passive pipe | 143 | $770 |
If you are weighing doing the work yourself, the saving is smaller than the headline price suggests, and the page on DIY radon mitigation sets out what the materials cost against what a contractor charges.
Before you accept a quote for a full system, go and look at your basement ceiling and the outside wall for a capped pipe running up from the slab. Houses built in York County under radon resistant construction often have one, and the owners frequently do not know it is there. Finding it turns a 1,279 dollar job into a 770 dollar one.
Beyond that, the factors that move a York County price are the ones that change how much pipe and labour the job needs: a stone foundation rather than a poured slab, an addition or split level that needs a second suction point, pipe routed internally to the roofline for appearance rather than straight out the rim joist, and exposed soil in a crawl space that has to be membraned and sealed.
Prices climbed, steadily
York County averages have risen by about 43 percent since 2019, and the increase came gradually rather than in one jump. Any cost article written before roughly 2023 now understates what you will be quoted.
The 2026 figure covers 178 installations recorded so far this year and will move as the rest of the year is reported. Treat it as the current direction rather than a settled annual average.
Get free quotesFree and without obligation. Your details go only to firms serving your ZIP code.
Is York County expensive?
York County is the cheaper end of Pennsylvania. Across the same three years the statewide average came to 1,390 dollars against 1,203 here, so a York homeowner pays roughly 13 percent below the state figure.
York County 986 installations, average $1,203, median $1,150
Pennsylvania 22,552 installations, average $1,390
That gap is worth knowing when you read national cost guides, which tend to quote ranges drawn from metropolitan markets where labour runs higher. A number produced for Philadelphia or the Denver suburbs is not a useful benchmark for a quote in Dover or Red Lion.
What the system costs to run each month
A mitigation fan runs continuously, so the install price is not the whole cost. The running cost is small but permanent, and it is the number quotes almost never mention.
The arithmetic is simple enough to do for your own house. Take the fan's wattage from its rating plate or ask the installer, then multiply by 24 hours and 365 days and divide by 1,000 to get kilowatt hours per year. Multiply that by the rate on your own electricity bill.
| Fan rating | Per year | At 12.51 cents per kWh | Per month |
|---|---|---|---|
| 50 watts | 438 kWh | $54.79 | $4.57 |
| 70 watts | 613 kWh | $76.70 | $6.39 |
| 90 watts | 788 kWh | $98.63 | $8.22 |
The rate used here is 12.51 cents per kilowatt hour, the Pennsylvania average retail price across all sectors in the EIA state electricity profile for 2024. Residential rates usually run above the all sector average, so treat these figures as a floor and substitute the rate printed on your own bill for a real number.
One more running cost that belongs in the same calculation: the fan is a wearing part. Ask what the unit is rated for and what a replacement costs, because that is a expense you will meet once rather than never.
Does the money actually fix the problem?
The same register records a reading before the work and after it, which makes the outcome measurable rather than promised. Across 630 York County installations with both readings on file:
- Average before
- 21.1
- Average after
- 1.7
- Reduction
- 92%
- Ended below 4
- 97%
Ninety seven percent of mitigated York County houses came in under the action level afterwards, and three quarters came in under 2 pCi/L, which is close to what you would measure outdoors. Roughly 1,200 dollars buys a documented reduction of about 92 percent, and that is the honest case for spending it.
It also tells you what to insist on. The post-mitigation test is what turns a promise into a result, and it is the reason these figures exist at all. A system is not finished until a fresh reading proves it worked.
What to ask before you sign
- Is the post-mitigation test included, and who pays for it? This is where otherwise similar quotes diverge most. A cheaper quote without a confirming test is not cheaper.
- Is there already a passive pipe? Worth 500 dollars on the price if there is, and the contractor will know in one look.
- How many suction points does the house need, and why? A second point is a legitimate reason for a higher price, and a legitimate contractor will explain which part of the footprint needs it.
- What is the fan rated at, and what is the warranty? This sets your running cost and the replacement interval.
- What is the DEP certification number? Pennsylvania requires certification to test or mitigate. Check it against the DEP Radon Services Directory before work starts.
For the certification question in particular, see the list of radon contractors working in York County, which sets out which firms mitigate and which only test.
Common questions about radon mitigation cost
Will homeowners insurance cover radon mitigation?
Almost never. Standard policies treat radon as a gradual natural condition rather than a sudden accidental event, and most carry a pollutant exclusion covering radon gas, so testing and mitigation fall to the owner. Read your own policy rather than assuming.
How much does a radon mitigation system cost in York, PA?
The median across 986 York County installations since 2024 is 1,150 dollars, with roughly seven in ten under 1,300 and nine in ten under 1,600. Building a system from scratch averaged 1,279 and activating an existing passive pipe averaged 770.
Does a higher radon level make mitigation more expensive?
Hardly at all. Houses testing above 30 pCi/L averaged 1,269 dollars against 1,169 for those under 4, a difference of about nine percent. The crew builds the same system either way, so the reading affects urgency rather than price.
What is the monthly cost of running a radon mitigation system?
A fan running continuously at 50 watts uses about 438 kilowatt hours a year, which is roughly 4.57 dollars a month at the Pennsylvania average retail rate. A 90 watt unit runs closer to 8.22. Check your own bill for an exact figure.
Why are national radon mitigation cost estimates higher?
National ranges pull from metropolitan markets where labour costs more. Pennsylvania averaged 1,390 dollars over the last three years and York County 1,203, so a figure quoted for a big city market overstates what you should expect here.
Does radon mitigation actually lower the level?
Across 630 York County installations with a before and after reading in the state register, levels fell from an average of 21.1 pCi/L to 1.7, a reduction of 92 percent. Ninety seven percent finished below the 4 pCi/L action level.
Will insurance or a grant cover radon mitigation?
Standard homeowners policies treat radon as maintenance rather than sudden damage, so it is usually paid out of pocket. During a sale the cost is more often settled as a negotiated credit between buyer and seller.