How to Maintain Your Radon Mitigation System for Long-Term Safety

Installing a radon mitigation system is one of the most important steps you can take to protect your home and family. But like any home system, it requires occasional monitoring and maintenance to ensure it continues working properly for years to come.

At Radon Mitigation Spokane, we often tell homeowners that installation is just the first step — long-term safety comes from proper upkeep.

Here’s what you need to know.

Why Maintenance Matters

A properly installed radon mitigation system can reduce radon levels by up to 99%. However, system components like fans, seals, and vent pipes can wear down over time. If the system stops functioning correctly, radon levels can rise again without you realizing it.
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Since radon is invisible and odorless, the only way to stay protected is to monitor your system regularly.

1. Check the Manometer Regularly

Most radon mitigation systems include a U-tube manometer, a small gauge mounted on the vent pipe. This device shows whether the system fan is creating proper suction.

• The liquid levels in the tube should be uneven.
• If both sides are equal, your fan may not be working.
• If you’re unsure what the reading means, contact a professional.
  
  

This simple visual check only takes a few seconds and can prevent long-term exposure.

2. Listen for the Fan

Radon mitigation systems run continuously. While the fan is usually quiet, you should occasionally:

• Listen for unusual noises
  
• Watch for vibration changes
  
• Check for warning indicators if installed
  
  

Most radon fans last about 5–10 years. If the fan fails, radon levels can increase quickly, so prompt replacement is important.

3. Inspect the Vent Pipe

The PVC vent pipe carries radon gas safely above your roofline. Make sure:

• It remains securely attached
  
• No cracks or damage are visible
  
• The exhaust point is unobstructed
  
  

Spokane’s seasonal weather changes can sometimes impact exterior components, so a yearly visual inspection is wise.

4. Seal Foundation Cracks

Even with a mitigation system installed, sealing visible cracks in your foundation improves system efficiency. Over time, new settling cracks may appear.
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Use appropriate sealants or consult a professional if larger gaps develop.

5. Retest Your Home Every Two Years

Even if your system appears to be working properly, experts recommend radon retesting at least every two years. You should also retest:

• After major renovations
  
• After replacing a fan
  
• If you notice structural changes
  
• Before selling your home
  
  

Testing confirms your system continues to maintain safe radon levels.

6. Schedule Professional Inspections

While many checks are simple, a professional inspection ensures:

• The fan is operating within proper pressure range
• Seals remain airtight
• The system meets current safety standards
• No hidden issues are developing
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For homeowners in Spokane and surrounding areas, working with a local radon specialist ensures your system is optimized for regional soil and climate conditions.

READ: Guide to Radon Reduction: Protecting Your Home and Health

Signs Your Radon System May Need Service

Contact a professional if you notice:

• Manometer readings are equal
• The fan is unusually loud or silent
• Increased indoor radon levels
• Physical damage to piping

A system older than 10 years without service
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Protect Your Home for the Long Term

A radon mitigation system is a long-term investment in your family’s health. With routine checks, periodic testing, and occasional professional service, your system can provide reliable protection for many years.

If you’re unsure whether your radon system is functioning properly, Radon Mitigation Spokane WA  can inspect, repair, or upgrade your system to ensure your home remains safe year-round.
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Don’t wait for elevated levels to become a problem — proactive maintenance keeps your indoor air clean and your family protected.