Abstract: An installation system that embodies a method for installing HVAC equipment inlaid in suspended ceilings so that the cutting and trimming of pre-existing ceiling tiles is not required for a uniformed, presentable look to the room below is provided. The installation system may include at least one novel panel forming a cutout for slidably receiving inlaid HVAC equipment. Each novel panel may be dimensioned and adapted to replace at least one ceiling panel from a suspended ceiling so that each novel panel is supported along its edges by the pre-existing support grid of said suspended ceiling, presenting a uniform and clean look to the room below.