This involves both the maintenance cleaning process mentioned above but also the sanitization process. Cleaning includes cleaning rotor brushes and other HVAC components that are compact with contaminants. This process improves the life of HVAC motors and makes your overall HVAC system run more efficiently.
In locations with normal levels of contaminants, we recommend you do this every 4 to 6 years. That said, Texas can be fairly dusty at times, with some homes and businesses more susceptible than others. As such, you may want to shorten the time between cleaning.