Radon is a potentially dangerous radioactive gas, which can lead to lung cancer (if inhaled). As the air pressure in almost every house is relatively lower than the pressure of its surrounding soil, these houses end up developing a vacuum effect that sucks in this lethal gas right within their foundation. Over time, this gas intermingles with the air in these houses thereby standing as a massive threat to the inhabitants’ health and wellbeing. And this is exactly where radon fans come to play.
Radon fans are an integral part of almost every radon mitigation system which is specifically designed for preventing this gas from entering your households. These systems use a sub-slab depressurization technique for reducing the amount of radon entering your homes. Radon fans are ideally categorized into four different types. In the next few sections, you will find a detailed insight into these four different types of radon fans.
SSD Radon Fans (High Flow)
SSD High Flow Radon Fans are generally used in houses that are partially or entirely revamped for reducing the amount of radon entering the building. These fans provide ample protection against air leakage and they are particularly ideal for the foundations that don’t come with the necessary gravel, right under the first few layers of soil. The lack of gravel affects the porosity of their sub-slab layer which is why the radon fans are used in this case. While you’d usually find these fans in giant structures like offices and schools, a couple of them are also used for homes. However, unlike the industrial sized ones these fans come with a six or four-inch piping band and require multiple slab penetration for the job. Alternatively, the bigger industrial fans (as used in schools and offices) require around six to ten inches of piping along with multiple exhaust ports.
Medium to Low Powered SSD Radon Fans
Unlike the high flow SSD radon fans, the low and medium powered ones are ideal for houses that come with a decent layer of gravel right under their slab. Since the gravels under the foundation of these houses are pretty porous, these fans are usually installed right after new constructions when the foundation and the layer of gravel have already been laid. Unlike the room pressurization or the high powered SSD fans, the medium to low powered variants are relatively quieter. Additionally, they’ll also last you for a pretty long time. Most of these fans also draw low power which automatically reduces your energy bills. If you own a medium to low powered SSD fan, you can always connect them to a three to four inch piping for their consistent flow and exhaust. Unlike the high powered fans, they only require single slab penetration.
Room Pressurization Radon Fans
Room pressurization radon fans are installed right above the ground for drawing air from the outdoor spaces or from the upper sections of your house. The working mechanism of these fans is pretty simple. Since they are installed in the basement, they do not draw the levels of radon up, and rather bring it down. As they are entirely focused on working above the ground, these fans are pretty easy to install.
However, despite their innumerable benefits, these fans are perhaps the least effective when compared to the other variants. This is primarily because the weather, the construction of your house, open windows/doors and other factors collectively impact the performance of these systems. That being said, they are still the best radon fans to be used in smaller spaces. So if you have a small house, these room pressurization radon fans can be a great bid.
Suction SSD Fans
Ideal for houses with the dense sub-slab material, suction SSD fans are a pretty decent variant of SSD fans. In most cases, these fans need three inches of piping along with multi-slab penetration. It is only under these conditions that the fan is able to draw ample air. The larger variants of suction SSD fans are used in high-altitude zones where the air is relatively thin.