see this trying to keep People ducts squeaky clean.Although many these products could be made use of lawfully inside unlined ducts if all label Instructions are followed, many of the directions about the label may be inappropriate for use in ducts. Such as, In case the Instructions show "rinse with drinking water", the included moisture could promote mildew advancement.EPA isn't going to recommend the air ducts be cleaned routinely, but only as required. EPA does, on the other hand, suggest that When you've got a fuel burning furnace, stove or fireplace, they be inspected for right functioning and serviced before Every single heating season to safeguard versus carbon monoxide Avoiding common HVAC repair issues poisoning.