HVAC specs, or heating, ventilation, and air conditioning specifications, are a set of standards that outline the design, installation, and operation of a heating and cooling system. HVAC specs are important because they provide a framework for proper system design and operation, ensuring that the system is energy efficient and meets the needs of the occupants. HVAC specs include information on the type of equipment, the size of the equipment, the airflow requirements, the ventilation requirements, the insulation requirements, and the safety requirements. Additionally, HVAC specs may include information on the system’s control systems, such as thermostats, zoning systems, and humidity control systems. HVAC specs are typically provided by the manufacturer, and must be followed in order to ensure the system is installed and operated correctly. By following HVAC specs, homeowners can ensure their heating and cooling system is efficient and reliable.