Commercial duct cleaning is easy to get wrong, not because the work is complex, but because it is rarely run as a repeatable process. One building gets a thorough clean, another gets a quick pass, and the paperwork is inconsistent. For a facility manager, that inconsistency is a risk at audit time. At Mega Meter, we work with facility teams that want commercial AC duct cleaning to be predictable, documented, and defensible. This checklist gives you a structure you can apply to every property and every cycle.