A heat pump rooftop unit is a type of air conditioning system that uses the natural process of heat transfer to provide cooling and heating. It works by transferring heat from the outside air to the inside of a building or vice versa. Heat pumps are highly efficient, cost-effective, and environmentally friendly. They are often used in commercial and industrial buildings, as well as in residential homes. Heat pumps are typically installed on the roof of a building, and they use the outside air to provide heating and cooling. The heat pump works by using a compressor to move refrigerant between the indoor and outdoor coils. This process allows the heat pump to absorb heat from the outside air and transfer it to the inside of the building. Heat pumps are also able to reverse the process and transfer heat from the inside of the building to the outside air. This allows the heat pump to provide both heating and cooling, making it a great choice for energy efficiency. Heat pumps are an excellent choice for providing energy-efficient cooling and heating in any building.