Keep your system doing its job
A radon system only works while the fan runs. Fans run 24/7 and eventually wear out, often after 5 to 10+ years.
Signs your system needs service
- The manometer (U-tube) liquid levels are even, meaning no suction
- The fan is silent, rattling, or humming loudly
- Water is pooling in the pipe or the fan is leaking
- A retest shows radon has gone back up
- Ice blocking the exhaust in winter (rare but possible)
Typical service
- Verify power and check the fan
- Replace the fan with a properly sized model
- Inspect pipe, seals, and the exhaust location
- Re-seal cracks or sump lid if needed
- Recommend a follow-up test
Related Radon Mitigation Topics
Mitigation SystemsRadon TestingReal Estate RadonCrawl Space SystemsNew ConstructionHigh Test ResultsFan Not WorkingStill High After MitigationFinishing a BasementCost Guide
Frequently Asked Questions
How much does radon fan replacement cost?
Often around $300 to $700 installed, depending on the fan model and access.
Can I replace the fan myself?
It's possible but wiring, sizing, and sealing matter. A licensed pro can confirm the system still performs.
Ready for a straight answer? Tell us about your project and we'll connect you with a licensed, insured local pro for a written quote.
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