Aervan 25 Ft Mini Split Line Set – 1/4 in & 1/2 in O.D. Insulated Copper Pipes, Triple-Layer Insulation, Flame-Retardant, for Ductless AC & Heat Pumps

A clean, professional mini split install starts with the right line set. The Aervan 25 Ft Mini Split Line Set pairs a 1/4 in high-pressure line with a 1/2 in low-pressure line in pure copper for excellent thermal conductivity and a reliable refrigerant connection.

Each pipe is wrapped in triple-layer insulation (polyethylene film, heat-resistant foam and cotton) to prevent condensation and energy loss, with an M1 flame-retardant rating and ASTM-compliant copper. It stays flexible down to -40 °F, so it's easy to route through walls and around corners.

Why you'll love it

• Pure copper pipes – 1/4 in and 1/2 in O.D. for efficient, consistent heat transfer.
• Triple-layer insulation – polyethylene film, foam and cotton reduce condensation and energy loss.
• Flame-retardant – M1 flame-retardant rating; ASTM-compliant copper.
• All-weather flexible – performs in extreme temperatures down to -40 °F.
• Easy install – unroll, cut to length and solder. 2 protective caps keep the lines clean until connection.
• Universal fit – compatible with most split AC and heat pump systems that use 1/4 × 1/2 in lines.

Perfect for: new mini split installs, replacing old line sets, and extending the distance between indoor and outdoor units.

FAQ

Do I need flare nuts or soldering?
This line set is designed to be cut and soldered (brazed). Check your unit's connection type before buying.

Which units is it compatible with?
Any split AC or heat pump that needs a 1/4 in liquid line and a 1/2 in suction line. Check your unit's manual for the correct pipe sizes.

• 2 insulated copper tubes (1/4 in and 1/2 in O.D., 25 ft)
• 2 protective caps