The Lennox 28J79 MAXIPRO 1/2" Straight Coupler (5 Pack) is a professional-grade press fitting designed for fast, secure, and flame-free connections in HVAC and refrigeration piping systems. Manufactured under the trusted MAXIPRO line, this straight coupler allows technicians to join two sections of 1/2 inch ACR copper tubing with confidence, reducing installation time while maintaining long-term system reliability. Ideal for residential and light commercial air conditioning, heat pump, and refrigeration applications, this coupler supports modern press-tool installation methods that eliminate the need for brazing or soldering.

Engineered for durability and performance, the MAXIPRO straight coupler features a precision-formed copper body and an integrated HNBR sealing element to ensure a leak-free connection when properly pressed. This fitting is optimized for use with approved MAXIPRO press tools and jaws, making it a preferred solution for contractors looking to improve jobsite safety and efficiency. Supplied as a convenient 5-pack, the Lennox 28J79 coupler is well-suited for repairs, line extensions, and new system installations.

 

Product Overview:

 

The Lennox 28J79 MAXIPRO 1/2 inch straight coupler is designed to connect two equal-size copper tubes in a straight-line configuration using press technology. It provides a reliable, permanent joint without open flames, making it ideal for use in occupied buildings, retrofit jobs, and locations with fire restrictions.

 

Specifications:

 

Brand: Lennox

Part Number: 28J79

Product Type: Straight Press Coupler

Connection Size: 1/2 inch

Tubing Type: ACR Copper

Connection Method: Press-fit (MAXIPRO compatible press tools required)

Material: Copper body with HNBR sealing element

Pack Quantity: 5 couplers

Application: Air conditioning, heat pumps, refrigeration, residential and light commercial HVAC systems

This Lennox MAXIPRO 1/2 inch straight coupler 5-pack is a dependable choice for HVAC professionals seeking fast installation, consistent performance, and OEM-quality fittings for copper refrigerant lines.