Air duct cleaning can help remove dust, pollen, pet dander, air pollutants, mold, microbes, and other allergens. It is recommended that you get your air ducts cleaned twice a year. Once in the springtime when the air conditioner is put back into use, and in the autumn as your furnace is turned back on. You should also change your air filter every 90 days.
Any company you hire to clean your air ducts should follow standardized cleaning processes approved by the National Air Duct Cleaning Association (NADCA).
These processes establish how to clean the ductwork in your home, as well as the registers, filters, air handlers, fans, housings, and evaporator coils.
According to the Environmental Protection Agency, improper duct cleaning by a HVAC technician that does not follow proper procedures may be detrimental to indoor air quality.
Routine air duct cleaning is important for preventative maintenance on your central heating and cooling system, as dirty coils can cause component failure if left untreated.
As far as the process of cleaning your air ducts, here’s the steps a professional HVAC company will take.
1. Inspecting the air ducts.
This is when the HVAC technician will look at your ducts and registers to see if there is buildup of dust or other contaminants. They should also inspect the ductwork visually or with a camera to see if there is any existing damage to the ductwork, and how much dust and dander is built up in the ducting.