A mitigation system isn’t something you install and forget entirely — but it also doesn’t demand much. Here’s what actually needs attention over the life of a system.
Typical fan lifespan
Most inline radon fans last somewhere in the 5 to 10+ year range, depending on the model and how hard it’s running. A fan sized correctly for the house tends to last longer than one running harder than it needs to.
The pressure gauge, explained
Most systems have a small U-tube manometer or gauge mounted on the pipe, showing the pressure the fan is generating. A steady reading means the fan is doing its job. A gauge that’s flat, or a liquid column that’s dropped to the bottom, is the simplest sign something’s wrong — usually a fan that’s stopped running.
Warning signs it needs attention
- The gauge reads flat or noticeably different than it used to
- The fan gets noticeably louder, or you can’t hear it running at all
- A retest comes back higher than your last one
- Visible damage to exterior piping (common after storms or ice)
When to call for service
Any of the signs above are worth a call — and that’s true even if we didn’t install your original system. A fan swap on an existing system is usually a quick, contained job.
Frequently asked questions
Should I retest periodically even if nothing seems wrong?
It’s reasonable to retest every couple of years, since radon levels can shift with changes to the house or surrounding soil.
Can I replace the fan myself?
The part itself isn’t complicated, but matching the right fan strength to your system is easy to get wrong — an undersized replacement can leave you with a system that runs but doesn’t actually lower your number.
Noticed a warning sign, or just want a system checked? Get in touch — we service existing systems, including ones we didn’t originally install.