When Does Your Radon Fan Need Replacement?
The inline radon fan is the heart of your mitigation system. It runs continuously, 24 hours a day, 365 days a year, pulling radon gas from beneath your foundation and venting it safely above your roof. Over time, the fan motor bearings wear down, and performance gradually declines. Most radon fans have a lifespan of seven to twelve years, depending on the manufacturer, operating conditions, and the amount of moisture passing through the system. When your fan starts to fail, your radon levels can climb back to dangerous concentrations quickly, sometimes within days. If you notice any signs that your fan is struggling, calling for a prompt replacement is one of the most important things you can do to protect your family's health.
Signs Your Radon Fan Is Failing
There are several clear indicators that your radon fan may need replacement. The most obvious is unusual noise. A healthy radon fan produces a low, steady hum. If you hear grinding, rattling, buzzing, or intermittent cycling, the motor bearings are likely worn and the fan is nearing the end of its life. Another key sign is a change in your U-tube manometer reading. If the liquid levels in the manometer are equal or nearly equal, it means the fan is no longer generating adequate suction. You may also notice that your radon levels have increased during routine testing, which is a strong signal that the fan has lost performance. In some cases, the fan may stop running entirely, either due to motor failure or a tripped circuit breaker caused by the fan drawing excessive current as it struggles to operate.
Our Radon Fan Replacement Process
When you contact Five Seasons Radon for a fan replacement, we schedule a service visit at your earliest convenience, with same-day and next-day appointments available for most calls. Our technician will inspect your existing system, verify the fan has failed or is underperforming, and confirm the correct replacement size and model for your pipe diameter and system requirements. We carry the most common fan sizes on our trucks, so in most cases the replacement is completed during the initial visit. The old fan is disconnected, the new fan is installed and sealed into the existing pipe run, and the system is tested to confirm proper airflow and suction. The entire replacement typically takes less than an hour.
We service and replace fans from all major manufacturers, including RadonAway, Festa, Fantech, and Suncourt. If your existing fan was undersized for your system, we can upgrade to a higher-capacity model to improve performance. Every replacement fan we install comes with a full manufacturer warranty, and we stand behind our workmanship with our own service guarantee. After the replacement, we recommend scheduling a follow-up radon test to confirm that your system is once again reducing levels below the EPA action level of 4.0 pCi/L.
What's Included with Our Fan Replacement Service
- On-site system inspection and fan diagnostic
- Replacement of failed fan with professional-grade inline radon fan
- All major brands serviced: RadonAway, Festa, Fantech, Suncourt, and more
- Option to upgrade fan capacity for improved system performance
- Sealed connections with proper couplings and caulk
- System airflow and suction verification after installation
- U-tube manometer check and recalibration
- Full manufacturer warranty on replacement fan
- Same-day and next-day appointments available
- Follow-up radon test recommended to verify system performance
- Licensed and insured service technicians