Expand Your Services… And Improve Indoor Air Quality for Your Customers by Pat Hyland, Rotobrush® International LLC
Next, clean the entire duct system using professional air duct cleaning equipment. Start by cleaning the supply runs, beginning with the furthest air duct away from the air handler. Work your way back towards the air handler, cleaning the remaining air ducts. This will allow you to overlap air ducts to ensure complete cleaning. After you clean the supply duct runs, you are ready to clean the cold air return. Typically, because the return draws air to circulate through the system, it has more dirt and debris than the supply (depending on the location of the filter, if a filter was used at all). An active video inspection system is handy for viewing the cleaning of all of this dirt and debris.
Video inspection is an important tool in air duct cleaning because it lets the customer know the job was done right, increasing referrals and customer loyalty.