MRCOOL MC25-3858 - Installation Kit - 25 Feet (3/8 X 5/8) Line Set For 24k & 36k Indoor (25Ft Kit 03)

Complete Mini-Split Installation Kit — 25-Foot Line Set Included

The MRCOOL MC25-3858 installation kit includes a 25-foot pre-insulated 3/8×5/8 inch copper line set, communication wire, and drain hose — everything needed to connect your indoor air handler to the outdoor condenser. The 25-foot length handles most residential installations where the outdoor unit is on a different wall or floor from the indoor unit.

Technical Specifications

Installation & Product Tips

• Measure the actual routing path before ordering — 25 feet covers most standard residential installations
• The 3/8×5/8 diameter is for 9K–18K BTU systems
• Include 10–15% extra length in your measurement for bends and routing
• Route the drain hose with a minimum 1/4-inch per foot slope for proper condensate drainage
• A licensed HVAC technician must braze connections and evacuate the system before charging

Frequently Asked Questions

Warranty Information

All MRCOOL products sold by HVACProSales come with the full MRCOOL manufacturer warranty. Register your product at the MRCOOL registration portal within 30 days of installation to activate full warranty coverage. Residential products typically include a 7-year parts warranty and 5-year compressor warranty when registered. Commercial products carry a 5-year parts warranty.