What are the two types of HVAC system design?

The two main types of HVAC system design are centralized and decentralized. Centralized systems are typically used in larger buildings and involve a single, centralized unit that distributes air throughout the building. Decentralized systems are typically used in smaller buildings and involve multiple, smaller units that are located throughout the building. Both types of systems are designed to provide efficient and effective heating, ventilation, and air conditioning.