An extra reference for examining ductwork needs is Manual D. The calculations develop an in depth, room-by-place Assessment of cooling requires. Ask for a printout of all calculations and assumptions, including ductwork style and design. Be wary of the contractor who bases estimates merely on dwelling measurement or imprecise rules. https://seth8qckr.blogdiloz.com/30324549/best-air-conditioning-maintenance-companies-in-jeddah-an-overview