What is the difference between HVAC and heat pump?

HVAC (Heating, Ventilation, and Air Conditioning) systems are designed to provide heating, cooling, and ventilation for a space. They typically consist of a furnace, air conditioner, and air handler, which are connected to a duct system. Heat pumps, on the other hand, are a type of HVAC system that use a refrigerant to transfer heat from one area to another. Heat pumps are more efficient than traditional HVAC systems, as they can both heat and cool a space, and can be used in both warm and cold climates. Heat pumps also require less energy to operate than traditional HVAC systems, making them a more cost-effective option.