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MRCOOL DIY 1/4" x 3/8" Pre-Charged Line Set for 6K, 9K & 12K BTU Units
The MRCOOL DIY 1/4" x 3/8" Pre-Charged Line Set makes DIY mini‑split installation quick and easy. This line set comes pre‑filled with R‑454B refrigerant and features simple QuickConnect fittings — no special HVAC tools or vacuum pump required.
Designed specifically for use with MRCOOL DIY 6K, 9K & 12K BTU indoor air handlers, this line set provides flexibility in placing your indoor and outdoor units, while ensuring reliable performance and efficient cooling and heating.
What's Included:
- 16‑ft/25-ft/35-ft/50-ft line set with 1/4" liquid line and 3/8" suction line
- QuickConnect fittings for tool‑free installation
- Pre‑charged with eco‑friendly R‑454B refrigerant
- This 16-ft/25-ft sets do NOT come with communication wire.
- The 35ft and 50ft line sets include a DIY Pro Cable communication wire in the box.
- The 66ft and 75ft line set include Couplers with 75ft DIY Pro Cable communication wire in the box.
Key Benefits:
✅ Pre-Charged & Ready – No vacuuming or refrigerant handling needed
✅ QuickConnect Fittings – Simple push‑to‑connect installation
✅ Perfect for 18K BTU Units – Designed for MRCOOL DIY 18K BTU indoor air handlers
✅ Durable Construction – White UV‑resistant jacket with copper tubing inside
Compatibility Note: Only compatible with MRCOOL DIY 6K, 9K & 12K BTU systems. Do not use with other brands or non‑DIY MRCOOL units.
Ideal for extending the distance between your indoor and outdoor units, or as a replacement line set for existing DIY systems.
Order yours today and finish your DIY installation faster!