PA DEP certificationMitigation #1725 · Testing #1725
Also offers: crawlspace sub-membrane depressurization, radon-resistant new construction and 2 moreRadon system repair in York County
Radon system repair means fixing a system that's already in place, such as one with a fan that has stopped. 2 PA DEP-certified mitigation companies listed here say they replace radon fans or work on existing systems.
Which Radon Companies Repair Systems in York County?
These PA DEP-certified companies say they replace fans or work on existing systems. Check where each is based and ask whether it serves your town.
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Sorted by number of Google reviews.
PA DEP certificationMitigation #0565
What Counts as Radon System Repair?
Work on a system that's already in place. DEP's consumer guide says radon systems need some occasional maintenance, and that fans may last five years or more.
Pennsylvania's rules cover changes to a system too. A certified company that alters an existing system must report it to DEP, and the building must be tested after the work (25 Pa. Code §§ 240.303 and 240.310). The rules don't define an alteration, so ask the company whether your repair counts.
When Do You Need a Radon System Repair?
When the warning device says the system isn't working. DEP's consumer guide says to call a company to have it checked.
The gauge reads even
On a U-tube gauge, even fluid levels mean the fan may not be working or may be off, DEP says. See is my radon system working?
Check your information packet
Pennsylvania's standards (25 Pa. Code § 240.308) say it must list what to do if the warning device shows a fault, and hold your contracts and warranties.
Before a home sale test
DEP's home buyer's and seller's guide says to make sure the fan works, and have it repaired before testing if it doesn't.
What Happens During a Radon System Repair?
The company inspects the building, follows DEP's standards, and tests and reports if the system is altered.
Inspect first
A certified individual must do a thorough visual inspection before any mitigation work.
Follow the standards
Anyone doing radon mitigation must follow DEP's standards. What they say about installing a system: sub-slab depressurization.
Test after
If the system is altered: at least 48 hours, 24 hours to 30 days after the work, with the system running throughout.
Report to DEP
Covering the type of work, the cost to you and the test result after (25 Pa. Code § 240.303).
What Should You Ask a Radon Repair Company?
Their certification number, whether your warranty covers it, and whether the repair counts as an alteration.
What's your PA DEP certification number?
Check it on PA DEP's Radon Services Directory, on the mitigation list.
Is my fan or system still under warranty?
Your information packet should hold the warranties. Check them before you pay for a repair.
Does this repair count as an alteration?
If it does, the company must report it to DEP and the home must be tested again.
Will you test after the repair, and when?
The rules give a 24-hour to 30-day window after an alteration.
What will it cost?
Ask for a written quote first. See what radon mitigation costs.
Common Questions About Radon System Repair
How much does a replacement radon fan cost?
PA DEP's 2014 consumer guide put it at about $250 to $350, including parts and labor. Ask for a current quote.
How do I know if my radon fan has stopped?
Check the warning device. On a U-tube gauge, even fluid levels mean the fan may not be working or may be off, PA DEP says.
Should I fix a radon system before a home sale test?
Yes. DEP's home buyer's and seller's guide says to make sure the fan works, have it repaired if it doesn't, then test. The system should run for the whole test.
When is the test after an alteration done?
No sooner than 24 hours and no later than 30 days after the work is finished and switched on, unless something unforeseen gets in the way. Pennsylvania's testing rules say the system must run for the whole test.
Keep Reading About Radon Systems
Sources
- PA DEP: Pennsylvania Consumer's Guide to Radon Reduction
- PA DEP: Radon in the Home
- PA DEP: Pennsylvania Home Buyer's and Seller's Guide to Radon
- 25 Pa. Code § 240.308, Radon mitigation standards for residential buildings
- 25 Pa. Code § 240.310, Testing protocols
- 25 Pa. Code § 240.303, Reporting of information
- PA DEP Radon Services Directory
Page last updated Oct 2026.