Our VOC fume extractors are meant to last a lifetime and, if cared for properly, will last for decades. Our warranty lasts one year from the date of invoice. We will service units for the lifetime of the equipment, however labor charges will apply. However, filters do not last very long and need to be changed on a regular basis. Adsorption media should be changed regularly. Activated carbon can only trap so many gas vapors before gases start to seep back into the recirculated air. Generally, you should be changing the filter every 1 to 4 months if the filter is in heavy use Our VOC air purifiers have real-time filter monitoring which will allow you to figure out the perfect time to change your filter. This real-time monitoring makes it easy so that your filter is always performing at peak efficiency.