How much does radon mitigation cost?
Most homes are fixed with a sub-slab depressurization system: a pipe and fan that pull radon from under the foundation and vent it above the roof. Pennsylvania's DEP has put typical system costs at roughly $800 to $1,200, though prices vary with foundation type, crawl spaces, and how the pipe has to be routed.
How to do it
- Confirm a high result with a second test before paying for a system, unless you're on a home-sale deadline.
- Get two or three quotes from state-certified mitigators. Ask what's included: fan, sealing, permits, and a post-install test.
- Ask where the pipe and fan will run (inside the house, garage, or exterior wall) since it affects cost and looks.
- Make sure the price includes a follow-up radon test after installation to prove the system works.
- Ask about the fan warranty. Fans typically run continuously and eventually need replacement.
What to avoid
- Don't hire anyone who isn't certified if your state requires certification.
- Don't assume sealing cracks alone will fix a high level. It rarely does by itself.
Certified mitigation contractors
Get free quotes from up to 3 certified radon pros near your area
Tell us what you need and where. We send your request to up to 3 state-certified pros near you who offer that service, and they contact you directly.
What happens next
- We match your ZIP to certified pros nearby who offer the service you picked.
- Each pro gets your request and contacts you directly, usually within a business day.
- Compare quotes and pick one, or none. There's no fee and no obligation.
Free, no obligation. We don't sell your details to anyone else.
Prefer to choose yourself? Every certified pro is listed above with their phone number.
Common questions
Is radon mitigation worth it?
If your test shows 4 pCi/L or higher, the US EPA recommends fixing your home. It also recommends considering a fix between 2 and 4 pCi/L, since there's no known safe level of radon.
How long does installation take?
Most residential systems are installed in a day.
Does a radon system raise my electric bill?
Slightly. The fan runs continuously, so it adds a modest amount of electricity use.