Air-cooled condensers are devices used in refrigeration and air conditioning systems to remove heat from refrigerants. They work by passing air over coils containing the refrigerant, allowing the heat to dissipate into the atmosphere. This process helps cool the refrigerant, enabling it to return to a liquid state and continue the cooling cycle. These condensers are often preferred for their simplicity and lower maintenance requirements compared to water-cooled systems. They are commonly found in commercial and industrial applications, as well as in residential units, making them a versatile choice for various cooling needs.