What Are the Types of Radon Mitigation Systems—and How Do They Work?

Radon Mitigation Isn’t One-Size-Fits-All

Just like medicine, the right treatment depends on the diagnosis.

At RadonRX, we prescribe mitigation systems based on:

  • Home foundation type
  • Radon levels
  • Airflow patterns
  • Basement or crawlspace design

Active Sub-Slab Depressurization (ASD)

Most common and most effective

Active Sub-Slab Depressurization (ASD) System

How it works:

  • A small suction point is created beneath the slab
  • A fan pulls radon gas from under the home
  • Gas is vented safely above the roofline

Ideal for:

  • Homes with basements
  • Slab-on-grade homes

Effectiveness: 90–99% reduction

Sub-Membrane Depressurization System (SMD)

For homes with crawlspaces

Sub-Membrane Depressurization System (SMD)
  • A vapor barrier seals exposed soil
  • A venting system pulls radon from beneath the barrier
  • Soil exposure is significant

This approach treats the entire crawlspace like a sealed system.

Why Professional Design Matters

Poorly designed systems:

  • Reduce effectiveness
  • Increase noise
  • Look sloppy
  • Can even draw radon into the home

Our approach is clean, quiet, and code-compliant—because your home deserves a proper prescription.

📅 Book your radon consultation today.

Frequently Asked Questions

Are new homes safe from radon?

No. In fact, newer homes can sometimes have higher radon levels because modern construction is more airtight. Radon comes from the soil beneath your home — not from the age of the house.

Does a radon system increase home value?

Yes. A mitigation system is often seen as a proactive improvement and can simplify future real estate transactions by eliminating radon concerns during inspections.

How do I know if my home has radon?

Radon is invisible and odorless — there’s no way to detect it without testing. Even homes next door to each other can have completely different radon levels. The only way to know is to test.

How long does a radon test take?

Most professional tests run for 48 hours to ensure accurate results. After testing, we review the findings with you and explain exactly what they mean for your home.

How long does installation take?

Most mitigation systems are installed in a single day. You can remain in your home during installation.

Is radon mitigation loud or noticeable?

No. Modern mitigation systems are quiet and discreet. The vent stack is typically placed along the exterior of the home, and the fan operates with minimal noise.

Is radon really that dangerous?

Radon is the second leading cause of lung cancer in the United States and the #1 cause among non-smokers. Long-term exposure increases risk — which is why early detection matters.

What does a radon mitigation system cost?

Costs vary depending on your home’s layout and foundation type. After testing and evaluation, we provide transparent pricing before any work begins.

What happens if my levels are high?

If radon levels exceed EPA recommendations (4.0 pCi/L), we design a mitigation system tailored to your home’s structure. Most systems reduce radon levels by up to 99%.

© RadonRX Radon Mitigation 2026