EPA does not recommend that the air ducts be cleaned routinely, but only as needed. EPA does, however, recommend that if you have a fuel burning furnace, stove or fireplace, they be inspected for proper functioning and serviced before each heating season to protect against carbon monoxide poisoning.

Air ducts, like any other HVAC system, require regular cleaning to ensure maximum efficiency. The National Air Duct Cleaners Association (NADCA) recommends air duct cleaning every three to five years. In some settings, however, the need for commercial air duct cleaning is more immediate.

Understanding the Scam: Scammers behind duct cleaning phone calls and Facebook ads typically employ similar tactics to reel in their targets. They often pretend to represent a reputable duct cleaning company and use persuasive techniques to create a sense of urgency and convince you to take immediate action.