A liquid line filter-drier should be placed where?

The correct placement of a liquid line filter-drier is indeed between the condenser and the metering device. This position is critical for the system's efficiency and longevity.

The primary function of a filter-drier is to remove moisture and contaminants from the refrigerant. When refrigerant leaves the condenser, it is in a liquid state and can contain impurities or moisture that could harm the components that follow, such as the metering device. The metering device regulates the flow of refrigerant into the evaporator, and if it is subjected to contaminants or moisture, it could become clogged or not function properly, leading to inefficiencies, system failures, or damage.

By placing the filter-drier in this location, it ensures that the refrigerant is clean and dry before it enters the metering device, thus protecting the entire cooling system. This proactive measure enhances the overall reliability and performance of the air conditioning system.