Quick checks before you call
If the liquid in your radon system's U-tube manometer is level, the fan isn't creating suction and your radon levels may be climbing.
Quick checks
- Is the fan plugged in or the switch on? Check the outlet and breaker.
- Can you hear or feel the fan running (outside or in the attic)?
- Is the exhaust blocked by ice, debris, or a bird nest?
- Is water pooling in a pipe section?
When to call
- Fan is silent or rattling with power on
- Manometer stays at zero after checking power
- Fan is leaking water
- Retest shows radon back above 4 pCi/L
Related Radon Mitigation Topics
Mitigation SystemsRadon TestingReal Estate RadonCrawl Space SystemsFan Replacement & RepairNew ConstructionHigh Test ResultsStill High After MitigationFinishing a BasementCost Guide
Frequently Asked Questions
How long do radon fans last?
Often about 5 to 10+ years, depending on model and conditions.
Is a loud fan normal?
A steady hum is normal; rattling, grinding, or a sudden change in noise usually signals bearing wear.
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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