What is AC restriction?
What is AC restriction? Refrigerant circuit restrictions can be common things like a plugged filter drier or a restricted metering device. When an undesigned restriction occurs, refrigerant will “back up” against the restriction, resulting in more refrigerant being present before the restriction and less afterwards than designed. Does an AC system need a filter drier? When an air conditioner or refrigeration unit is installed a Filter Drier is needed. That Filter Drier stays in the system as long as the AC is in service. If a repair is needed to the refrigeration side, replacement of the drier should be considered....