HVAC floor plans are drawings created by specialized engineers that include all the details required to develop, install, and maintain a building's heating and cooling system. The HVAC floor plan is critical and is created after the building's floor plans have been completed. The engineers apply their knowledge to make the most effective and efficient system possible. This system requires minimal wiring and costs while still meeting the needs of the building's occupants. HVAC plans can be used in various ways because they provide the overall floor plan for heating, cooling, and ventilation.