DIY Couplers & Control Wire Only - FOR 6k - 9k - 12k - 18k Air Handlers

MRCOOL DIY Couplers and Control Wire Kit (DIYCOUPLER-1412K75C) – Extend Your Line Set with Ease
Seamless, Tool-Free Extension for Your MRCOOL DIY® QUICK CONNECT® Line Set

The MRCOOL DIY Couplers and Control Wire Kit (DIYCOUPLER-1412K75C) is the perfect solution for extending your MRCOOL DIY® QUICK CONNECT® line set in longer installations. Whether your setup requires more reach or you need to maximize flexibility, this kit provides everything you need to extend your refrigerant lines and electrical connections—without the need for specialized tools or professional installation.

🌟 Key Features & Benefits
✔ Quick & Easy Line Set Extension
Designed to connect two MRCOOL DIY® line sets together, allowing for a total length of up to 75 feet per zone.
Tool-free installation with DIYCOUPLER-14 and DIYCOUPLER-12 couplers, ensuring a secure, leak-proof connection.

✔ Compatible with Standard MRCOOL DIY Line Sets
Works with 16', 25', 35', and 50' line sets, allowing for custom installations.
Supports a maximum combined line set length (up to 75 feet per zone).

✔ 75' MC5 Pro Cable for Extended Electrical Connection
Replaces the standard 25' cable with a longer 75' Pro Cable, ensuring an uninterrupted electrical link between the indoor unit and outdoor condenser.
No need to splice or modify cables—simply install and connect!

✔ DIY-Friendly Installation – No HVAC Experience Needed
Pre-charged Quick-Connect fittings mean no vacuuming, cutting, or brazing is required.
Clear, step-by-step installation instructions make it easy for homeowners to extend their system.

🔄 Compatible with Both R-410A and R-454B Systems
Whether you have an older MRCOOL DIY system using R-410A refrigerant or the latest 5th Generation MRCOOL DIY model with R-454B refrigerant, this adapter kit is fully compatible.
The refrigerant type is irrelevant—the Quick Connect fittings are designed to work seamlessly with either refrigerant, ensuring a leak-proof and trouble-free connection every time.
Extend your system with confidence, no matter which generation you own!

🔧 Installation Instructions

1️⃣ Disconnect the Existing Cable – Remove the pre-attached 25-foot control wire from your indoor unit.
2️⃣ Install the 75' MC5 Pro Cable – Replace the shorter cable with the provided 75' Pro Cable to maintain a strong and reliable connection.
3️⃣ Connect the Line Sets – Use the DIYCOUPLER-14 and DIYCOUPLER-12 to securely link two MRCOOL line sets together, extending the total length up to 75 feet.
4️⃣ Manage Excess Cable – If there’s extra cable, coil it neatly instead of cutting it to preserve system integrity.

⚠️ Important Considerations
Maximum Line Set Length: MRCOOL multi-zone systems allow a total line set length of 75 feet per zone.
Excess Cable Handling: Do not cut the MC5 Pro Cable—coil it carefully if extra length remains.

📦 Kit Contents

✅ DIYCOUPLER-14 and DIYCOUPLER-12 – Securely connects two line sets.
✅ 75' MC5 Pro Cable – Ensures a continuous, unbroken electrical connection between indoor and outdoor units.

🛠️ Compatibility

The MRCOOL DIY Couplers & Control Wire Kit (DIYCOUPLER-1412K75C) is compatible with:

• ✔ 6,000 BTU MRCOOL DIY Wall Unit / Ceiling Cassette

• ✔ 9,000 BTU MRCOOL DIY Wall Unit / Ceiling Cassette

• ✔ 12,000 BTU MRCOOL DIY Wall Unit / Ceiling Cassette

• ✔ 18,000 BTU MRCOOL DIY Wall Unit / Ceiling Cassette

🔹 Why Buy from MRCOOL DIY Direct?

At MRCOOL DIY Direct, we offer authentic MRCOOL parts with fast shipping, expert guidance, and customer satisfaction.

✅ 100% Genuine MRCOOL Accessories – Factory-approved for perfect compatibility.
✅ Expert Support – Our team is available to help with installation and troubleshooting.
✅ Fast & Reliable Shipping – Get your order quickly and hassle-free.
✅ Trusted by Thousands – Homeowners and HVAC professionals rely on us for MRCOOL products.

🛒 Order Your MRCOOL DIY Couplers and Control Wire Kit Today!
Extend your MRCOOL DIY line set with ease using this plug-and-play solution—no HVAC experience required!

📦 Order now from MRCOOL DIY Direct for fast shipping and expert support!