ducted system heat-load calculation 3

https://ace-wiki.win/index.php/Why_Ducting_in_Roof_Cavity_Matters_for_Canberra%27s_Climate

Working out the heat load for a ducted system means figuring out how much cooling or heating power you need by accounting for the heat that gets absorbed or lost as air travels through the ducts. It's not just about the room itself—you also have to factor in things like duct insulation, length, and placement in unconditioned spaces, which can all sneak extra heat into the airstream before it reaches the vents. Get this calculation right, and you’ll avoid undersized units that can't keep up or o…