JMF 1/4" x 3/8"x 25 Ductless Refrigeration Copper Line Set

Line sets are copper tubing lines used to connect split system air conditioners and heat pumps. The two copper lines (liquid line and suction line) in the set are refrigerant lines that connect the condensing unit (air conditioner-outside) to the evaporator coil (e-coil) in the furnace unit.