If you have a radon mitigation system in your home, you’ve probably noticed a small U-shaped gauge attached to a pipe—this is your radon system manometer. While it may look simple, this device is an important tool that helps you know whether your radon mitigation system is working properly.

At BreatheWell Radon Solutions in Madison, WI, we often hear from homeowners who aren’t sure how to read their manometer or when to call for help. This guide will walk you through the basics so you can feel confident checking your system.

How to Read Your Manometer

Reading a manometer is easier than it looks. Here’s what you need to check:

1. Look at the Two Fluid Levels

The U-shaped tube contains colored liquid. Each side of the tube will show a different level when the fan is running. Uneven levels mean the fan is on and creating suction.

2. Identify the “Normal” Range

When your system was installed, the installer likely marked the manometer with a piece of tape or a small line showing the normal operating range. If the liquid levels are close to that mark, your system is working properly.

3. Watch for Warning Signs

• Both sides equal at zero – This means your fan is not running.
  
  
• Levels dramatically higher or lower than normal – Could signal a problem with suction or airflow.
  
  
• Sudden changes from your baseline – Even if the fan is running, a big difference from your normal range may need attention.

When to Call a Radon Professional

Your manometer is a quick visual tool, but it doesn’t tell you everything. Here are times you should call BreatheWell Radon Solutions in Madison for service:

• The liquid levels are even, showing no fan pressure.
  
  
• The system is making unusual noises or vibrations.
  
  
• You notice condensation or leaks around the pipe or gauge.
  
  
• Your radon test results are higher than expected despite the system running.
  
  

Even if the manometer looks “normal,” it’s smart to schedule periodic radon retesting every two years to confirm your home’s levels are safe.



Why It Matters

Radon is the second leading cause of lung cancer in the United States, and homes in Wisconsin are at higher risk due to the region’s geology. A properly functioning radon mitigation system is the only way to consistently keep levels below the EPA-recommended threshold. Checking your manometer regularly is a simple step that helps protect your family’s long-term health.

Ready to Protect Your Home?

Your radon system manometer is your first line of defense, but professional monitoring and maintenance are key to lasting safety. If you’ve noticed unusual readings—or if it’s been more than two years since your last radon test—now is the time to act.

ContactBreatheWell Radon Solutions in Madison, WI today for expert service, testing, and peace of mind knowing your system is working the way it should.