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Second Tap Attic Sub-Slab Radon System

Finding unsafe levels of radon on your property can be worrying. High radon levels of 4.0 pCi/L or higher increase lung cancer risk. Fortunately, attic radon mitigation provides a smart, effective and aesthetically pleasing way to protect your property and health.

Second Tap Attic Sub Slab System
Diagram of a second tap sub-slab attic system for radon mitigation.

What Is an Attic Radon Mitigation System?

Attic radon mitigation systems use a fan in the attic to create suction and pull radon from beneath your property’s slab or foundation. PVC pipes carry the radon from the foundation collection chambers through the attic and vent it above your roof.

Single-tap systems use one suction point, while two-tap systems use two for stronger radon removal.

Why Install a Radon Fan in the Attic?

Key benefits of installing an attic radon fan include:

  • Curb appeal preservation: Keep system components hidden in the attic instead of on exterior walls. 
  • Quieter operation: Attic installation reduces noise compared to outdoor units.
  • Protection from the elements: While radon fans are rated for exterior use, protecting them from freeze-thaw cycles may help extend their service life.

The Radon Fan Attic Installation Process

If you’re unsure whether you need to install a radon fan in the attic, order a free radon testing kit from SWAT Environmental. It’s best to install a mitigation system if levels are 4.0 pCi/L or higher.

When you call us for a free quote, our certified technicians will ask you more about your home and needs. This allows us to give you the best radon mitigation system option. This might be an attic sub-slab radon system, or you may be able to use passive radon systems.

We’ll treat your home with care and respect. After installation, we’ll give you another test kit to confirm your radon levels have been reduced. 

Frequently Asked Questions About Attic Radon Fans

We’ve answered some questions you may have about attic radon remediation systems.

Can You Vent Radon Into the Attic?

Venting radon into the attic would be ineffective since it can easily flow into living spaces. For that reason, attic radon mitigation systems do not release radon into the attic. The gas is fully contained in sealed pipes and vented outside, high above the roof.

Is a Radon Fan in the Basement or Attic Better?

For safety and effectiveness, radon vent fans should not be installed in basements or other conditioned indoor spaces. This risks reintroducing radon into your home. Instead, installing radon fans in the attic or other unconditioned areas, like garages or the home’s exterior, means any potential leaks vent outside.

Why Trust SWAT Environmental?

Radon gas exposure is a silent killer. Finding a company you can trust to install an effective radon mitigation system is crucial. Here’s why you can trust us: 

  • Unmatched experience: As the nation’s largest radon mitigator, we’ve installed hundreds of thousands of radon mitigation systems. We’re equipped to find the best ways to minimize radon in your property. 
  • Respect for your property: Our certified technicians are trained to be polite, clean and minimally disruptive.
  • Solutions for every need: We can deliver fast, compliant results for real estate transactions and scalable solutions for large commercial properties.

Get a Free Quote for Your Attic Mitigation System

For a discreet, effective and worry-free radon solution, trust SWAT Environmental. Get your free custom quote today or speak directly to our team by calling 1-800-NO-RADON.


1-800-NO-RADON