Passive Radon Systems

🏡 What is a Passive Radon System?

A passive radon system is a radon mitigation setup that relies on natural air movement (instead of a fan) to draw radon gas from beneath the home and vent it safely above the roofline.

It usually includes:

• A vertical PVC pipe running from below the foundation up through the attic and roof
  
  

• Properly sealed penetrations and sump covers
  
  

• No fan or powered component
  
  

These systems are typically installed during construction to give radon gas a pathway to escape — but they don’t always move enough air to lower radon to safe levels.

⚠️ When Passive Isn’t Enough

Here’s the issue: without a fan, passive systems can’t create enough suction to remove radon in many homes, especially in areas like Colorado where radon levels are naturally high.

Over 60% of passive systems we test are not effectively reducing radon — meaning many homeowners think they’re protected when they’re not.

🚨 Have a Passive System? Here’s What to Do:

1. Test Your Home – Even with a system in place, radon levels may be above EPA action level (4.0 pCi/L). Testing is the only way to know.
   
   

2. Upgrade to Active – If your levels are elevated, we can easily convert your passive system to an active one by adding a custom-sized radon fan and performing a quick inspection.
   
   

3. Get Peace of Mind – Our upgraded systems come with a 10-Year Warranty, are fully DORA- and NRPP-compliant, and can significantly reduce radon levels — often below 2.0 pCi/L.