Example of a Complex, High Quality Radon System Installation
Post-Mitigation Radon Reading: 1.9 picoCuries/liter
The vacuum fan is enclosed in the white shroud (soon to be painted brick red). The pvc exhaust stack was painted prior to installation. Exhaust meets all EPA guidelines, being 10 feet above ground, above the eave and at least 2 feet above the nearby window. A 90 degree elbow is mounted at the top to keep the moist exhaust from blowing on the structure.
In this grand old home, load bearing walls divide the basement and subslab areas into four major zones, each of which required a separate radon collection point. Here we see the riser from one of the four points, with tees going off to other points. Toward the right end of the horizontal run is a valve used for balancing the gas flows within the system.
Our system is threaded through this morass of piping. One of those horizontal runs is ours. Subtle point: no u-trap sections allowed; these would collect condensate, create burbling noises, and compromise the system’s effectiveness.
Here is the point where the system exits the basement. Note the pressure gauge on the riser, telling that the fan is working. This system also includes a plug-in digital monitor/alarm that displays the radon reading and beeps if the system fails and the radon level climbs above the EPA guideline.
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Super quick and efficient service of installing a radon mitigation system in the house we were selling. The installers were very knowledgeable and explained the system and the information to pass on to the buyer's. Definitely would recommend.
(a) at least ten feet off the ground,
(b) above the eave (not necessarily the edge) of the roof, and
(c) either ten feet away from, or two feet above, windows.