Fuses are present in some older model Biozone Air Purifiers. To check if your Biozone has a fuse, follow the instructions below. Turn off the Air Purifier and unplug the unit from the electrical outlet. On the back of the air purifier, unscrew the four small screws at each corner of the back panel. (Underneath the area that stores the UV Lamp). The entire back panel will come off. Once this panel is off, you should see a circuit board at the bottom with the fuse on it.

Biozone 1.25amp Fuse - B071F81TRB