How do I select the location for HVAC duct work in a new house?
Man, this is a science. Good advice from others so far, but you need to size your duct work, calculate number of runs, distance aprt, etc. That is done by taking into account things like room dimensions, volume, CFMs, total area of glass versus insulated wall or ceiling. Many good installers have calculators for these things. If all this has been done for you, and you just want to choose the routes for the ductwork, pick the shortest runs to the exterior walls for the supply, and use the innermost walls for the returns. Make sure you put returns both high and low. Choose the shortest path for the return trunks back to the furnace. If you are doing a small (less than 1000 sq/ft) home in a temperate area, go for it. If this is a 3500 square foot home in Montana or Chicago – get help.
