Can UFAD systems be installed in existing buildings, during retrofit projects for example?
Due to the tremendous size of the existing building stock, retrofit construction will play a dominant role in the future for the building industry. Projects requiring the addition of an HVAC system often encounter the problem of having limited space for accommodating ducts and other components. By eliminating large overhead ceiling ducts, the total plenum height required in UFAD installations is less than that for ceiling based systems. Therefore, UFAD is feasible for existing buildings where, due to restricted floor-to-floor/floor-to-ceiling heights, it is necessary to minimize the vertical space occupied by ductwork. In addition, the intervention of a raised floor system is less disruptive than that of ducting for overhead systems as the floor can be easily installed, and removed, as an independent platform leaving relatively few structural scars. This issue is important in buildings where maintaining the integrity of the existing building structure is important for heritage/cultural
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