–Typical Radon System- Sub slab depressurization (SSD) – Most homes will be fixed with a “Sub slab depressurization” system, which uses a fan and PVC pipe to draw air from below the basement floor and exhausts it above the roof. The radon fan creates a vacuum under the basement floor. With the fan running, if you puff smoke by a crack or opening in the basement floor, you will see the smoke slowly pulled down through the crack or opening. Turn the fan off, and the smoke will blow back in your face. As long as the fan is running, there is literally no underground air entering the home. Typically, the pipe will run through the garage, and the fan will be in the garage attic. Other methods consist of the pipe in a closet and the fan in the attic, or both the pipe and fan outside. Prices start at $750.
–Sump Pumps– A sump pump is a pump used to remove water that has accumulated in a water collecting sump basin, commonly found in the basement of homes. The water may enter via the perimeter drains of a basement waterproofing system, funneling into the basin or because of rain or natural ground water, if the basement is below the water table level. These pumps start at $325 installed!
–Crawlspaces– These systems are similar to sub-slab systems, but they are applied to buildings with crawlspaces, where there is either no slab or a partial slab. A vapor barrier (i.e., membrane) that is impermeable to gases is placed under the floor or directly on the soil, and one or more suction pits are placed beneath the membrane. Like sub-slab systems, they create a negative pressure under the building so vapors do not get sucked up into the building with lower pressure than the sub-surface.