Keep Your Radon System Working

Radon System Maintenance and Follow-Up Testing in Denver, Colorado

Your radon mitigation system in Denver runs continuously to keep radon levels low, but it still needs periodic checks to confirm it's operating correctly. Fans can wear out, airflow can change, and suction pressure can drop if the system develops leaks or blockages. Without maintenance, your system may stop reducing radon effectively, leaving your home at risk even though the equipment appears to be running. Master Mitigators provides performance checks, fan inspections, and retesting to make sure your system continues working as designed.

Maintenance includes checking the radon fan for proper operation, inspecting the vent pipe and sealing work, and reading the manometer to verify suction pressure. Follow-up testing measures radon levels inside the home to confirm that the system is still reducing concentrations to safe levels. Colorado's changing seasons can affect system performance, especially during periods of high snow load on roofs or extreme temperature swings, so periodic inspections help catch problems before they reduce effectiveness in Denver.

If your radon system has been running for a year or more without a check-up, reach out to schedule a maintenance visit in Denver.

What Happens During a System Check

A maintenance visit in Denver involves inspecting the radon fan to confirm it's running smoothly and checking for unusual noise, vibration, or wear. The technician reads the manometer, a small U-tube gauge installed near the fan, to verify that the system is pulling adequate suction from beneath the foundation. The vent pipe and sealing work are also inspected for cracks, leaks, or damage that could reduce system performance.

After the inspection, you'll receive a clear assessment of your system's condition. If the fan is nearing the end of its service life, replacement can be scheduled before it fails. If suction pressure is low, sealing work or pipe adjustments may be needed to restore full performance. Follow-up radon testing confirms that your indoor levels remain at or below acceptable thresholds.

Master Mitigators also offers retesting as a standalone service if you want to check your radon levels without a full system inspection. Retesting is especially useful after foundation repairs, home additions, or changes to your HVAC system, all of which can affect how radon moves through your home and whether your mitigation system is still performing as intended.

Keeping Your System Reliable

Homeowners often have questions about when maintenance is needed and what signs to look for between inspections.

How often should I have my radon system inspected?
Most systems benefit from an inspection every two to three years, or sooner if you notice changes in fan noise, suction pressure, or if your manometer shows no movement. Annual checks are recommended if your system is older or if you've had foundation work done.
What does it mean if the manometer isn't showing suction?
A flat or motionless manometer usually means the fan isn't running or there's a blockage in the system. You should contact Master Mitigators to inspect the fan and check for leaks or damage in the vent pipe.
Why would radon levels increase after the system was installed?
Radon levels can rise if the fan fails, if sealing work deteriorates, or if changes to the home create new entry points for radon. Retesting identifies whether the system is still working, and maintenance can restore performance if issues are found.
How long does a radon fan typically last?
Radon fans are designed to run continuously and typically last between 10 and 15 years. Fans exposed to extreme temperatures or moisture may wear out sooner, so periodic inspections help catch wear before the fan stops working entirely.
When should I retest my home for radon?
Retesting is recommended every two years, after major home renovations, or if you notice changes in your system's operation. Follow-up testing in Denver confirms that your mitigation system is still reducing radon effectively and that your indoor air remains safe.

If your Denver home has a radon system that hasn't been checked in a while, or if you want to confirm your radon levels are still low, contact Master Mitigators to schedule a system inspection or follow-up test.