Most facilities budgets treat duct cleaning as a line-item cost to be minimised. For an office manager, HR lead or finance head, there is a more useful lens: return on investment. What does clean office air actually give back in productivity and reduced absenteeism? At Mega Meter, we make the business case rather than the cost case. Here is the evidence, the Dubai-specific reason your ducts matter, and a simple way to think about the numbers.