How Long Do Radon Mitigation Systems Last?
By Daniel SmokeDirector of Operations
A radon mitigation system is built to run continuously for the life of the home, but not every part wears at the same rate. The piping lasts for decades; the fan is the component that eventually needs replacing. Knowing what lasts, what to check, and how to spot a failure keeps your radon levels low long after installation.
How Long the System Lasts
The PVC piping and sealed penetrations of a radon mitigation system are essentially permanent. They can last as long as the house with no attention. The system as a whole does not 'expire.' What does wear out is the fan, because it runs 24 hours a day, every day. So the practical lifespan question is really about the fan, not the system.
How Long the Radon Fan Lasts
Most radon fans last about 5 to 10 years of continuous operation, and many manufacturers warranty them for around 5 years. Fans in harsher conditions (high moisture, very cold climates, or undersized for the system) may run on the shorter end. When a fan reaches end of life it is replaced on its own. The rest of the system stays in place.
Signs Your System Has Stopped Working
Every active system has a small clear U-tube gauge (a manometer) on the pipe. When the system is working, the liquid sits at different heights in the two columns. Because radon is invisible, the manometer and periodic retesting are how you know the system is still doing its job. Watch for these warning signs:
- The manometer columns are level instead of offset. The fan has lost suction.
- The fan has gone silent, or become unusually loud.
- New vibration or rattling from the fan or pipe.
- A rising radon level on a retest, even though the fan seems to run.
Maintaining Your System
Maintenance is minimal. A few simple habits keep the system reducing radon for the life of the home:
- Glance at the manometer every month or two to confirm the columns are still offset.
- Keep the fan and the exhaust point clear of obstructions.
- Retest your home for radon about every two years, and after any major foundation or HVAC change.
- Service the fan if the manometer shows no pressure difference or a retest comes back elevated.
When to Replace vs. Service
If the fan has simply failed at the end of its life, replacement is straightforward and far cheaper than a new system because the piping stays in place. If levels rise but the fan is running, the issue may be a new foundation opening or a system that needs an added suction point rather than a fan swap. A radon professional can diagnose which it is. Peerless Environmental supports radon mitigation and system service for homeowners across the Southeast, including the Upstate South Carolina communities where radon tends to run higher.
Common Questions
How long does a radon mitigation system last?
The system as a whole can last as long as the house. The PVC piping and sealed penetrations are essentially permanent. The fan is the part that wears out, typically after 5 to 10 years of continuous running, and it is replaced on its own without redoing the rest of the system.
How long does the radon fan itself last?
Most radon fans last about 5 to 10 years, with manufacturer warranties commonly around 5 years. Fans in high-moisture or very cold conditions, or ones undersized for the system, may run on the shorter end.
How do I maintain my radon system?
Check the manometer every month or two, keep the fan and exhaust clear, and retest the home about every two years and after any major foundation or HVAC change. That is essentially all the upkeep an active system needs.
Does a radon mitigation system need to be serviced regularly?
There is no routine servicing beyond checking the manometer and retesting periodically. You only call a professional when the manometer shows lost suction, the fan fails, or a retest comes back elevated.
What Backs Our Work
Every Peerless Environmental location follows the same safety-first standard, so you get clear answers no matter which local team you call.
AHERA & EPA RRP Certified
AHERA certification for school and public building asbestos inspections, and EPA RRP certification for lead-safe work practices.
Clear Reports & Documentation
Results you can understand and share with owners, buyers, managers, or regulators.
Compliant Work Methods
Procedures aligned with EPA and state environmental regulations, from site preparation through final documentation and clearance.
Local Teams, Shared Standards
Market-level response backed by the Peerless Environmental process.