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The MUELLER STREAMLINE LS-583850P-12 is a pre-insulated copper refrigerant line set designed for residential and light commercial HVAC installations. It consists of two copper tubes — a 5/8 inch OD suction line and a 3/8 inch OD liquid line — both factory-wrapped with 3/4 inch thick insulation. The 50 foot length suits runs requiring extended reach, such as attic routes or installations where indoor and outdoor equipment are separated by greater distances. Licensed HVAC technicians install this line set as part of split-system air conditioning and heat pump installations to carry refrigerant between the indoor coil and the outdoor condensing unit.
This line set is suited for residential split-system air conditioners and heat pumps where the suction line requires heavier 3/4 inch insulation to limit heat gain and prevent condensation in exposed, attic, or high-ambient-temperature routing conditions. The 50 foot length accommodates longer-than-average line runs without requiring field splicing. The copper construction is compatible with common refrigerants used in residential split systems.
Designed as an OEM-style replacement and new-installation line set for residential split-system air conditioners and heat pumps requiring a 5/8 inch suction line and 3/8 inch liquid line configuration.
Installation should be performed by a licensed HVAC technician in accordance with applicable mechanical codes and the equipment manufacturer's instructions. Recover and recover all refrigerant before disconnecting an existing line set on a service call; never release refrigerant to atmosphere. Protect insulation from UV exposure using appropriate jacketing or paint when the line set is routed outdoors. Ensure all flare or braze connections are leak-tested before system startup.
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