Design HVAC system for 2-story house including location of furnace, AC and ducting, intake, vents as well as chase required for ducting. And draw plan on existing floor plan in autocad -- source autocad files to be provided.
House is on a raised foundation. Furnace located in garage. Vents on the 1st (ground) level are to be on the ground. Vents on the second floor to be on the ceiling.
House located in United States. Must be familiar with US building codes. A link to the specific codes can be provided.