Condensers, also known as the heart of the system, are commercial-grade outdoor units of air conditioners or heat pumps that either release or collect heat, depending on the time of the year. They are made of condenser coils, a compressor, a fan, and various controls.
These units are responsible for compressing the refrigerant and pumping it to a coil in the form of hot gas. In the case of air conditioners, the refrigerant is cooled at the condenser into a warm liquid and passed through a pipe into the evaporator coil, where it expands and cools. Whereas the hot gas is pumped directly to the evaporator coil for heat pumps to provide heat.