Accumulator HVAC: Description and Operation

ACCUMULATOR DESCRIPTION

The sealed accumulator is connected to the evaporator outlet pipe. The accumulator stores the following items:
^ The refrigerant vapor
^ The refrigerant liquid
^ The refrigerant oil from the evaporator

A desiccant at the accumulator bottom dries any moisture in the system. An oil bleed hole near the bottom of the accumulator outlet pipe provides the oil a return path to the compressor. The accumulator is serviced only as a replacement.