Interior & Exterior Vent Routing for Radon Mitigation

When it comes to radon mitigation, one of the most important design choices is how the vent piping is routed. Proper vent routing allows radon gas to move safely from beneath your home’s foundation to the outdoors, where it can disperse harmlessly into the air. At BreatheWell Radon Solutions, we specialize in designing and installing both interior and exterior vent routes that maximize performance while keeping your home’s look and function in mind.

Why Vent Routing Matters

Think of a radon mitigation system like a chimney for invisible gas. The fan creates suction under your foundation, pulling radon gas out before it can enter your living space. But where and how that vent piping travels is just as important as the fan itself.



If venting is done incorrectly, radon can re-enter the home, reduce system efficiency, or create an eyesore on the outside of your house. That’s why the U.S. EPA and state guidelines have clear requirements for safe vent pipe placement. Our team knows these rules inside and out and installs every system with precision.

Interior Vent Routing

Interior vent routing means the vent piping is run inside your home, usually through closets, utility spaces, or wall cavities, before exiting through the roof. Many homeowners choose this option because:


  • It protects curb appeal – No visible pipes running up the side of your house.

  • Added protection – Piping is shielded from weather and UV damage.

  • Quiet operation – With the fan tucked away in the attic, sound is minimized.

Interior routing does require more planning. Our technicians carefully design pathways that won’t interfere with your living space while ensuring full compliance with building codes.

Exterior Vent Routing

Exterior vent routing means the piping is installed along the outside of your home, often running from the foundation up past the roofline. This option is popular because:

  • It’s cost-effective – Typically faster and less invasive to install.

  • Easier access – Fans and piping can be serviced without entering the home.

  • Ideal for certain layouts – Especially when interior routes aren’t practical.

BreatheWell takes extra care with exterior systems to blend them into your home’s design. We use durable materials and thoughtful placement so the system performs reliably while keeping your home looking its best.

Long-Term Peace of Mind

A radon mitigation system isn’t something you want to second-guess. When vent routing is done right the first time, your system will operate quietly, effectively, and safely for years.


With BreatheWell Radon Solutions, you get a partner who makes the process easy, handles every detail, and ensures your family can breathe clean air at home.

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Vent Routing FAQ

  • Which is better—interior or exterior vent routing?

    Neither is “better” in all cases. Interior routing is more discreet and protects the system from weather, while exterior routing is faster and often more affordable. The best option depends on your home’s layout and your preferences.

  • Will the vent pipes hurt the look of my home?

    No. We take care to place exterior piping where it’s least noticeable and use high-quality materials that blend in. Interior systems are hidden almost entirely within walls and attics.


  • How do I know if my system is working?

    We install a monitoring gauge on every system and recommend annual checks. You’ll be able to see at a glance if the fan is running properly.

  • Can you switch from exterior to interior later?

    It’s possible but can be more costly once a system is installed. That’s why we spend time upfront designing the best route from the start.