Overview
The Mini Split Line Set with Kits is a complete pre-insulated copper tubing assembly for mini-split AC and heat pump systems. Made from annealed copper tubing meeting ASTM standards, compatible with high-pressure refrigerants including R410A. Every set includes the copper line set, closed-cell XLPE (cross-linked polyethylene) foam insulation with an embossed outer jacket — fire resistant and UV stable — plus a full installation kit.
Key Features
- Annealed copper tubing, ASTM compliant, clean ends ready to flare
- Closed-cell XLPE foam insulation, embossed jacket — fire resistant & UV stable
- Complete kit: flare nuts, drain hose, PVC tape, electrical wire, sealant putty & wall sleeve
- 1/4″ liquid line; suction sizes: 3/8″ / 1/2″
- 3/8″ insulation; lengths: 16ft, 25ft
- For mini-split & ductless heat pump systems (9k–24k BTU)
Specifications
| Model (SKU) | Tube Size (Liquid x Suction) | Insulation | Length |
|---|---|---|---|
| B143838016F Kit | 1/4″ x 3/8″ | 3/8″ | 16ft |
| B141238016F Kit | 1/4″ x 1/2″ | 3/8″ | 16ft |
| B143838025F Kit | 1/4″ x 3/8″ | 3/8″ | 25ft |
| B141238025F Kit | 1/4″ x 1/2″ | 3/8″ | 25ft |
What’s in the Kit
- Copper line set (liquid + suction), pre-insulated
- Flare nuts on both ends
- Drain hose (condensate line)
- PVC tape & electrical wire
- Sealant putty & wall sleeve (line set pass-through)
Model Number Decoding
Example B143838016F Kit: B = Series · 14 = 1/4″ liquid · 38 = 3/8″ suction · 38 = 3/8″ insulation · 016 = 16ft · F = Type F · Kit = with installation kit.
Compatible With
Mini-split and ductless heat pump systems 9k–24k BTU, R410A compatible. Match tube size to your outdoor unit nameplate; field-flare and trim to length on site.
Installation Notes
- Field-flare ends on site with a proper flaring tool; follow torque specs.
- Trim to exact length after dry-fitting; measure total run before cutting.
- Custom-cut or opened line sets are non-returnable per our Terms.
FAQ
Q: What’s included in the kit?
A: Copper line set, XLPE insulation, flare nuts, drain hose, PVC tape, wire, sealant putty & wall sleeve.
Q: Which tube sizes are available?
A: 1/4″ x 3/8″ and 1/4″ x 1/2″; lengths 16ft and 25ft.

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