The MRCOOL DIY 5th Generation 25 ft. Pre-Charged Line Set is purpose-built for use with 18,000 BTU indoor air handlers. With 1/4″ liquid and 1/2″ suction lines, this line set is factory pre-charged with R-454B refrigerant and features MRCOOL’s patented Quick Connect fittings, making installation simple, fast, and completely DIY-friendly — no vacuum pumps, gauges, or professional tools required.
This 25 ft. line set is the standard length included with most MRCOOL DIY mini split systems and is perfect for connecting your air handler to the condenser in typical residential setups. Compatible with both single-zone and multi-zone 5th Gen MRCOOL systems.
Key Features
Length: 25 feet – perfect for standard HVAC installations
Line Sizes: 1/4″ liquid x 1/2″ suction – compatible with 18K indoor air handler units
Pre-Charged with R-454B – Environmentally friendly refrigerant sealed and ready for use
Quick Connect Fittings – Patented tool-free connection system ideal for DIY installation
Durable Construction – UV-resistant white sleeve with insulated copper tubing
