The MRCOOL DIY 5th Generation 25 ft. Pre-Charged Quick Connect Line Set is the standard-length refrigerant line set for MRCOOL’s 24K and 36K indoor units. Built for homeowners and HVAC professionals alike, this line set features 3/8″ liquid and 5/8″ suction lines, factory pre-charged with R-454B refrigerant, and sealed for leak-free performance.
Designed for easy installation with MRCOOL DIY 5th Gen single-zone and multi-zone systems, this 25 ft. line set comes equipped with Quick Connect fittings, making it possible to install without vacuum pumps, gauges, or licensed technicians.
Key Features
Length: 25 feet – standard for most DIY mini split installations
Line Sizes: 3/8″ liquid x 5/8″ suction – perfectly sized for 24K & 36K units
Refrigerant: Pre-charged with eco-friendly R-454B
Connection: Quick Connect fittings – no vacuuming, brazing, or special tools needed
Durability: White UV-resistant insulation with robust copper line construction
