MRCOOL 3/8 X 3/4 Couplers for Universal, HyperHeat & VersaPro Series Quick Connect CouplersThe MRCOOL Universal Quick Connect Coupler Kit is designed exclusively for extending MRCOOL NV Series Pre Charged Line Sets used on the MRCOOL Central Ducted (Universal), HyperHeat, and VersaPro systems. These couplers allow you to join two NV Series pre charged line sets together, giving you the additional length needed for longer installation runsall without tools or complicated HVAC procedures. Important Compatibility Note: These couplers are NOT

The MRCOOL Universal Quick Connect Coupler Kit is designed exclusively for extending MRCOOL NV-Series Pre-Charged Line Sets used on the MRCOOL Central Ducted (Universal), HyperHeat, and VersaPro systems.
These couplers allow you to join two NV-Series pre-charged line sets together, giving you the additional length needed for longer installation runs—all without tools or complicated HVAC procedures.

Important Compatibility Note:

These couplers are NOT compatible with MRCOOL DIY Mini-Split line sets. For a mini split pre-charged line set, Click Here.
They are only for the NV-Series Quick Connect line sets used on central ducted systems.

✔ Compatible With (2nd Generation)

• MRCOOL Universal Series — 2–3 Ton & 4–5 Ton

• MRCOOL HyperHeat Series — 2 Ton, 3 Ton, 4 Ton, 5 Ton

• MRCOOL VersaPro Series — 3 Ton, 4 Ton, 5 Ton

• Also compatible with the original 1st-generation NV pre-charged line sets

⭐ Key Features

Effortless Line-Set Extension

Connect two MRCOOL NV-Series Quick Connect line sets to increase total length quickly and securely—perfect for installations requiring additional distance between the condenser and air handler.

How It Works

Simply thread each coupler onto the ends of your existing NV line set, then attach your second line set. No vacuum pump, nitrogen, brazing, or specialized tools required.

Tool-Free Installation

The screw-on Quick Connect design saves time and eliminates traditional HVAC labor. A truly DIY-friendly solution for both homeowners and professionals.

Engineered for Reliability

Each coupler is built to maintain a leak-free seal, ensuring the refrigerant charge remains contained and system performance is never compromised.

❌ Not Compatible With:

• MRCOOL DIY Mini-Split Line Sets (Wall-mount, Ceiling-cassette, or Multi-Zone DIY systems)

These connectors only work with the NV-Series Quick Connect line sets used in MRCOOL central ducted systems.

⭐ Why Choose the MRCOOL Quick Connect Coupler Kit?

• Saves hours of labor compared to traditional line-set extensions

• No special tools required

• Preserves factory refrigerant charge

• Allows long-distance installations with ease

• Trusted, leak-proof MRCOOL engineering