Red Brick Ranch Radon Fix: Custom System for Stubborn Levels in a Geothermal Home

After putting off mitigation for some time, this homeowner in a brick walk-out ranch was ready to take action. With radon levels at 14 pCi/L, it was clear that a more effective and permanent solution was needed. There was no sump pit, only exterior drain tile and pea gravel beneath the slab, plus a hidden passive pipe that proved unreliable. To deliver reliable radon abatement, we designed a 2-point sub-slab extraction system along the north wall, spaced 15 feet apart (disregarding the outdated job drawing). The system will exit through the block wall and brick, with a fan and muffler installed on the side of the home, carefully routed around the soffit for a clean finish.

They currently operate an ERV system with geothermal HVAC, which we encouraged them to run more consistently. A custom Breathe EZ (29x25) unit with L brackets is part of the plan, replacing the awkward filter stack they currently use (16x25x2 + 14x25x2). Sealed 25 feet of visible slab cracks near the HVAC system and finish with duct cleaning and standard fogging; creating cleaner air and real radon reduction.