A Carrier Packaged Rooftop Unit (RTU) is a self-contained system designed to provide heating, cooling, and ventilation for commercial buildings. It is typically installed on the roof of a building and is made up of several components, including an outdoor condenser, an indoor evaporator, a blower, and a compressor. The RTU works by taking in outside air, cooling or heating it, and then distributing it throughout the building. The system is highly efficient and can help reduce energy costs. Additionally, it is relatively easy to install and maintain, making it a popular choice for many commercial buildings. RTUs are also known for their quiet operation, making them a great choice for businesses that need to maintain a quiet environment. All in all, Carrier Packaged Rooftop Units are an ideal choice for commercial buildings that need efficient and reliable heating, cooling, and ventilation.