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MRCOOL DIY 1/4" x 1/2" Pre-Charged Line Set for 18K BTU Units
The MRCOOL DIY 1/4" x 1/2" 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 18K 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:
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16‑ft/25-ft/35-ft/50-ft line set with 1/4" liquid line and 1/2" suction line
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QuickConnect fittings for tool‑free installation
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Pre‑charged with eco‑friendly R‑454B refrigerant
- this 16-ft/25-ft sets do NOT come with communication wire. However, if you are purchasing a MRCOOL DIY system with an Air Handler, a 25 feet communication wire is included in the Air Handler box.
- The 35ft and 50ft line sets include a DIY Pro Cable communication wire in the box.
- The 66ft and 75ft line set include Couplers and 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 18K 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!