Radon Detection and Treatment: Top Benefits of an Active Sub-Slab Depressurization

July 18, 2025      

Radon is an invisible, odorless gas that can pose serious health risks if left unchecked. If a radon test in your home revealed elevated levels, you're likely searching for the most reliable way to protect your family. That’s where an Active Sub-Slab Depressurization (ASSD) system comes in—a trusted solution and the most effective radon mitigation method available today.

An ASSD system works by actively drawing radon gas from beneath your home’s foundation before it has a chance to seep into your living space. A fan-powered ventilation pipe creates negative pressure under the slab, redirecting radon safely above your roofline and into the outside air. This method consistently achieves dramatic results, often reducing radon levels by 80 to 99 percent. In many cases, homes that once tested well above the EPA action level of 4.0 pCi/L see levels drop below 1.0 pCi/L within days of system activation.

One of the biggest advantages of this system is its versatility. ASSD can be installed in a wide range of home types, from basements and slab-on-grade foundations to crawl spaces. It works well in both older homes and new construction, offering a long-term solution without significantly altering the appearance or function of your living space.

Another key benefit is the system’s reliability. Once installed, it runs continuously with minimal maintenance. Modern radon fans are energy-efficient and quiet, operating 24/7 to ensure that radon doesn't accumulate. With a simple manometer or digital monitor, you can quickly confirm that your system is functioning correctly.

Beyond just lowering radon levels, installing an ASSD system adds value to your home. More buyers are becoming aware of radon risks, and a professionally installed mitigation system offers peace of mind and a selling advantage in today’s real estate market. Plus, it shows that you’ve taken proactive steps to care for your property and the people in it.

At Radon Guys, we specialize in custom radon solutions designed for your home’s unique layout and soil conditions. Our team is fully certified, highly experienced, and focused on delivering safe, effective, and affordable mitigation that lasts. If you're looking for a long-term answer to radon, an active sub-slab depressurization system is your best option—and we're here to help every step of the way.

Contact Radon Guys today to schedule your free consultation. Breathe easy, knowing your home is protected.

< Go Back to Blog