6 Maintenance Tips to Keep Your Radon System Running Smoothly

Installing a radon mitigation system is one of the best ways to protect your home from long-term radon exposure. However, many homeowners assume the job is finished once the system is installed. While radon systems are designed to operate continuously with very little attention, a small amount of routine maintenance can help ensure they continue working efficiently for years.
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If your home has a radon mitigation system, here are a few simple maintenance tips to keep it performing at its best.

1. Check the System's Warning Device Regularly

Most active radon mitigation systems include a U-tube manometer or another pressure indicator mounted on the vent pipe. This small device lets you know whether the fan is creating the proper suction beneath your home's foundation.

Take a quick look at it every month. If the liquid levels appear equal when they normally are not, or if the warning indicator shows a problem, your system may not be operating correctly. It's a simple check that takes only a few seconds but can alert you to issues before radon levels begin to rise. The EPA recommends checking this warning device regularly.

2. Listen for Unusual Fan Noise

The radon fan is the heart of your mitigation system. It runs 24 hours a day, every day, to safely vent radon gas above your roofline.
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Most fans operate quietly. If you suddenly notice grinding, rattling, humming louder than usual, or complete silence, it may indicate the fan is wearing out or has stopped working. While many radon fans last five years or longer, they will eventually need replacement as part of normal system maintenance.

3. Never Turn Off the Radon Fan

Some homeowners are tempted to switch off the fan to save electricity or while working around the house. This should never be done unless instructed by a qualified radon professional during service.
The fan must run continuously to prevent radon gas from entering your living space. Even a short interruption can reduce the system's effectiveness.

4. Keep the Vent Pipe Clear

Your system's vent pipe carries radon gas safely above the roof. Periodically inspect any visible portions of the pipe to make sure they haven't been damaged or blocked by debris.
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If your system includes additional ventilation equipment or an HRV (Heat Recovery Ventilator), be sure to clean or replace filters according to the manufacturer's recommendations and have the unit serviced as needed.

5. Retest Your Home Every Two Years

Even if your mitigation system appears to be working properly, testing remains important. Radon levels can change over time due to soil conditions, weather patterns, foundation settling, or home renovations.
The EPA recommends retesting your home at least every two years after a mitigation system has been installed. It's also a good idea to test after replacing the fan, finishing a basement, or making structural changes to your home. Regular testing provides peace of mind that your system continues to reduce radon to safe levels.

6. Changes Around Your Foundation

While sealing cracks alone will not eliminate radon, changes in your home's foundation can affect how your mitigation system performs.
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Inspect your basement or crawl space occasionally for new cracks, gaps around plumbing penetrations, or signs of water intrusion. If you've recently completed foundation repairs or remodeling projects, consider scheduling another radon test to verify the system is still performing as expected.

Schedule Professional Inspections When Needed

Although radon systems require very little maintenance, it's wise to have them inspected if you notice unusual readings, suspect the fan has failed, or experience consistently elevated radon levels during testing.
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A qualified radon mitigation contractor can inspect the fan, suction points, piping, and system performance to identify problems before they become more serious.

Protect Your Home for the Long Term

A radon mitigation system is designed to work quietly in the background, but like any home system, it benefits from occasional attention. Simple habits like checking the manometer, listening to the fan, keeping the vent unobstructed, and retesting every couple of years can help ensure your system continues protecting your family.
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If it's been a while since your last radon test or you have concerns about your mitigation system, the experienced team at Indianapolis Radon Mitigation can inspect your system, answer your questions, and help make sure your home remains protected from elevated radon levels for years to come.