A HVAC package unit is a self-contained heating and cooling system that is installed outside of a building. It is a complete system that includes the condenser, evaporator, compressor, and other components, all in one package. This type of unit is usually used in commercial and industrial buildings, but can also be used in residential applications. HVAC package units are designed to provide efficient heating and cooling to a large area, and they are often used in places where there is limited space or where the installation of multiple units would be difficult. HVAC package units are easy to install and maintain, and they are often more cost-effective than other types of HVAC systems. They are also quieter than traditional systems, making them ideal for buildings that require quiet operation. HVAC package units are an excellent choice for businesses and homeowners who want to save money on energy costs while still providing comfortable temperatures throughout the year.