When does refrigerant release heat during its cycle?

During the refrigeration cycle, refrigerant releases heat when it condenses. This process occurs in the condenser unit, where the refrigerant, in its gaseous form, changes back to a liquid state. As the refrigerant gas enters the condenser, it comes into contact with coils or fins that dissipate heat to the surrounding environment, typically through a fan that blows air across the coils.

As the refrigerant loses energy in the form of heat, its temperature decreases, allowing it to condense back into a liquid. This phase change is essential for the efficient functioning of HVAC systems, as it facilitates the transport of heat from inside a space to the outside. Thus, understanding the role of heat release during condensation is crucial for anyone learning about HVAC principles and systems.