To tell if your Radon fan is working, check the u-tube manometer. The u-tube manometer warns you if the system has failed and is not working properly. To check this, look at the liquid in the tube. If the liquid in the tube is uneven, the system is working properly. If the liquid in the tube is equal on both sides, then there is no pressure in the pipe. This means the radon is not working. Call a radon specialist if the radon fan is not working properly.
How long a Radon fan will last depends on the usage of the fan. With proper installation and usage, Radon fans can last as long as 20 years. However, most Radon fans last between 5 to 10 years. How long these fans last is mostly up to how it is used and the installation.