Absolutely, especially for large enterprise-level facilities. In a large electronics production facility, maintaining ductwork can easily occupy a full maintenance department. Common maintenance problems when using central exhaust systems are: air-balancing problems; inadequate ventilation of remote process equipment; not enough HVAC capacity for make-up air when adding new lines; cleaning of clogged ducting from dross dust and rosin settlements to maintain adequate airflow; and repairing roof leaks at duct penetrations of the roof. But facility maintenance costs are not the only benefit of using SMT fume extractors. The ability to move an assembly line in a short period of time at a low cost is critical. At the time of a layout change, filter units move with the line. No additional cost is incurred due to the relocation of an assembly line. The alteration of fixed ducting can require days or weeks, and represents a substantial cost and delay each time a line is relocated. Not only that, but filtering and recirculating exhaust actually decreases the HVAC costs, despite what many might believe. This is because recirculated air only needs to be cooled, rather than cooled and dehumidified. As a result, air condition capacity goes down, allowing for lower HVAC operating costs.