Our plans do not include details for HVAC, Plumbing and Electrical systems. HVAC system details such as location of units, type and brand of units used, and duct layout are regulated and determined by your local building codes and your choice of heating and cooling system. Regarding Plumbing and Electrical systems, you must determine the direction the water flow will enter your house and where the electrical feed will enter. Your builder, HVAC contractor, Plumber, and Electrician will detrmine the location, type of system, and calculate the necessary load requirements for your house based on your local building codes. Our Electrical Plan is strictly for suggesting the locations for fixtures, outlets, switches, etc.