Commercial buildings and offices usually have HVAC units installed to keep the customers and employees comfortable. The HVAC unit cools or warms the air, which then flows through the air ducts to reach different places of the building or office. After some time, the efficiency of the heating and cooling system may go down. One of the most common causes of this are dirty air ducts. If the air ducts are dirty, it will take a longer time for the heating and cooling system to cool or warm the place. This can make the energy bill of the company higher. This can also cause unlikely odors and diseases that can make employees and customers sick. This can be avoided by getting professional air duct Westminster service twice a year or when necessary. Certified air duct cleaners will clean and sanitize the air ducts leaving them 100% germ free. This will keep the efficiency of the cooling and heating system, as well as prevent diseases from spreading in the building or office.