A Carrier rooftop unit is a type of HVAC system that is installed on the roof of a building. It is designed to provide efficient and effective heating, cooling, and ventilation to the building’s interior. The unit is composed of several components, including a condenser, evaporator, compressor, and fan. The condenser is responsible for releasing heat from the refrigerant, while the evaporator absorbs heat from the air inside the building. The compressor then compresses the refrigerant, which helps to cool the air. Finally, the fan circulates the air throughout the building. Carrier rooftop units are designed to be energy efficient and cost-effective, and they can help to reduce energy costs and improve indoor air quality. They are also easy to install and maintain, making them a great choice for commercial and residential buildings.