Signs Your Radon Fan Needs Replacement
Your radon mitigation system's fan is the engine that keeps your home protected from dangerous radon gas. When it fails or degrades, radon levels can quickly rise back to dangerous concentrations, putting your family at risk. Knowing the warning signs of a failing radon fan can help you act quickly to restore your home's protection.
The most obvious sign is silence — if you no longer hear the fan running, it has likely stopped working. Check your U-tube manometer on the radon piping: if the liquid levels are equal on both sides, the fan is not creating suction. Other warning signs include unusual noises such as grinding, rattling, or humming that were not present before, which can indicate worn bearings or motor problems. If you have a radon alarm and it triggers, or if a follow-up radon test shows elevated readings above 4 pCi/L, a failed or degraded fan is often the cause.
Typical Radon Fan Lifespan
Most radon fans are designed to run continuously 24 hours a day, 7 days a week, 365 days a year. High-quality fans from trusted manufacturers typically last between 5 and 10 years, with many lasting even longer under favorable conditions. However, several factors can shorten a fan's lifespan in the Billings area.
Montana's extreme temperature swings, ranging from well below zero in winter to over 100 degrees in summer, create significant thermal stress on exterior-mounted fans. Moisture from the soil that passes through the system can contribute to bearing wear and corrosion over time. The soil conditions beneath your home, including the amount of moisture and particulate matter drawn through the system, also affect fan longevity. We recommend checking your manometer monthly and conducting a professional radon test every two years to ensure your system continues to protect your home effectively.
Our Fan Replacement Process
When you call Rim Rock Radon for a fan replacement, our licensed and insured technician arrives with common fan models already on the truck, enabling same-day service in most cases. We begin by inspecting the entire radon system, checking the piping, connections, seals, and electrical wiring to ensure everything is in good working order beyond just the fan itself.
We then remove the failed fan and install a new, appropriately sized replacement. We match the fan to your system's specific requirements, considering factors like the number of suction points, pipe diameter, and the resistance characteristics of the soil beneath your slab. After installation, we verify proper system operation using a digital manometer and confirm airflow through the exhaust point. The entire process typically takes about one to two hours, and your home is protected again before we leave.
Upgraded Fan Options for Better Performance
If your original system was installed with a lower-capacity fan, or if your radon levels have not been reduced as much as you expected, a fan upgrade may be the solution. Higher-capacity fans can generate greater suction, extending the depressurization field further beneath your slab and pulling more radon from the soil. Our team can assess your current system's performance and recommend an upgrade if it would improve your results.
We carry a range of fan models from leading manufacturers, including energy-efficient options that deliver strong performance while keeping operating costs low. Whether you need a direct replacement or want to explore an upgrade, we have the right fan for every home in the Billings area.
Benefits of Our Fan Replacement Service
- Same-day service available
- High-quality replacement fans
- System performance verification
- Extended warranty options