Specifications include, but are not limited to:A) Each room designed to be living space will have a minimum of one duct and vent except where the size of the room would require more than one. Ducting requirements will be calculated using industry standard duct calculations based on the heat and cooling load required by each room. The exception to this would be in bathrooms where there is electric heat and an electric ventilation fan. The return air grill and thermostat will be placed within the structure in a manner that will allow good air circulation and high performance of the heating and cooling cycle. Contractor will insure system balance by the practice of undercutting doors, installing door grills, or installing jumper ducts. The air conditioning will perform to maintain a 20 degree temperature drop, measured at the vent closest to the evaporator, from the outside temperature or a maximum of 85 degrees, whichever is warmer. There should not be an excess of 5 degrees in temperature variation measured at the vent furthest from the evaporator. Heating equipment should be able to maintain a minimum of 68 degrees in each room intended as living space
