The MRCOOL DIY25-1412-O is a 25-foot, pre-charged mini-split line set designed for MRCOOL DIY ductless mini-split systems using R-454B refrigerant. Featuring 1/4-inch and 1/2-inch copper lines, it connects the indoor air handler to the outdoor condenser, allowing refrigerant to circulate efficiently for heating and cooling. The pre-charged design simplifies installation by reducing preparation time and eliminating the need for field charging. Ideal for DIY and professional HVAC installations, this line set provides reliable performance, convenient installation, and compatibility with 9,000, 12,000, and 18,000 BTU MRCOOL DIY mini-split equipment.
