25FT Air Conditioning Tubing Hose Extension 1/4 and 3/8 Inch Insulated Copper Hoses FIT for Mini Split Air Conditioner

Key Features

• High-Ductility Copper Core: Crafted from premium refrigeration-grade copper tubing, known for its optimal toughness, structural hardness, and excellent ductility. This ensures a long operational life and reliable performance under high-pressure conditions.

• Enhanced Protection Insulation: Sheathed in extra-thick heat preservation cotton insulation. This advanced thermal barrier minimizes energy loss, prevents external condensation drippings, and actively cushions the internal copper tubes from physical damage.

• Leak-Free Precision Engineering: Features heavy-duty, thickened brass connection nuts with high structural hardness to prevent thread stripping or slipping. Each end undergoes precise mechanical reaming to eliminate burrs, guaranteeing a flush, leak-proof joint.

• Direct Ready-to-Install Design: Arrives completely finished and pre-fabricated for immediate mechanical connection. It eliminates the need for manual on-site welding or flaring, saving valuable time during deployment.

Fitment & Compatibility Guide

Pre-Purchase Notice: Please cross-reference your specific mini-split air conditioner or heat pump service manual to confirm that the system’s suction and liquid line ports require 1/4-inch and 3/8-inch sizing.

Official Kit Component Specifications

Product Specifications

• Part Type: Insulated Refrigerant Line Set / Extension Hose

• Tubing Material: High-Grade Ductile Copper & Structural Brass

• Insulation Material: Thickened High-Density Thermal Cotton

• Condition: 100% Brand New

Package Includes

• 1 × 25FT Insulated Copper Tubing Assembly (1/4" & 3/8" Connected Hoses)

Important Mechanical & Installation Notes

• Professional HVAC Certification Advised: Connecting refrigerant lines, executing proper pressure hold checks, and conducting system evacuations involve specialized equipment and adherence to regional environmental standards. Installation by a licensed HVAC professional is highly recommended.

• Manage Line Bends Carefully: While copper offers excellent flexibility, always uncoil and bend the line set gradually. Avoid sharp kinks or crisp folds, which can constrict refrigerant flow, limit system efficiency, or strain the compressor.

• System Evacuation: Ensure all lines are thoroughly tested for leaks and properly evacuated using a vacuum pump to eliminate moisture and air before releasing the system's refrigerant.