These wonderful IQAir accessories were designed to make the commercial units more flexible in applications where the industrial/health environment is not conducive to a simple "turn-key" plug-in and turn on situation.  That being said, you may be in the same situation with your residential unit and may benefit from one or more of these accessories.  If you are not sure, please take the time to ask us and we'll do our best to help you choose the right accessory for your particular application.  Note: The PF-40 Coarse Dust Kit can't be used with some of these accesories.  Please check the particular accessory description for compatibility.