MRCOOL® 3/8" x 3/4" No-Vac Coupler Set – For Connecting NV Pre-Charged Line Sets for Central Ducted HyperHeat, Universal Split system & VersaPro Systems (Gen 1 & Gen 2, R-410A / R-454B

Upgrade your MRCOOL installation with the MRCOOL No-Vac Coupler Set (Model NVCOUPLER-3834), designed specifically for connecting two pre-charged line sets with ease and reliability. This coupler set includes a 3/8" liquid line coupler and a 3/4" suction line coupler, making it the perfect solution for extending your line set length without losing refrigerant integrity.

✅ Perfect Fit for MRCOOL Central Ducted Systems– Works exclusively with Central Ducted HyperHeatand Central Ducted VersaPro™ systems (Gen 1 & Gen 2).
✅ Compatible with R-410A and R-454B Refrigerant – Whether you’re installing a legacy R-410A system or the new eco-friendly R-454B refrigerant models, this coupler set ensures secure performance.
✅ No Vacuum Pump Required – Engineered with MRCOOL’s patented No-Vac technology, these couplers maintain a factory-sealed, pre-charged connection, eliminating the need for specialized tools.
✅ Durable Copper Construction – Built from high-quality copper with a bronze/copper metallic finishfor long-lasting strength and corrosion resistance.
✅ Quick, Leak-Free Installation – Double male end coupling ensures a tight seal and straightforward setup for DIYers and HVAC professionals.

Specifications:

• Sku: NVCOUPLER-3834

• Sizes: 3/8" (liquid line) + 3/4" (suction line)

• Dimensions: 6"W x 4.5"D x 2"H

• Weight: 6 lbs

• Fitting Type: Double male end coupling

• Color Family: Bronze/Copper Metallic

• Restricted States: GU, PR, VI

• Proposition 65 Warning: Yes

Whats Included 

set

Why Choose This Coupler Set?

When you need to extend your MRCOOL pre-charged line set, the NVCOUPLER-3834 provides the only factory-approved solution for Central Ducted HyperHeat, Universal Split System and VersaPro™ systems. With support for both refrigerant generations (R-410A & R-454B), you’re covered for today’s installs and future upgrades.

Perfect for:

• Homeowners expanding HVAC installations

• Contractors extending line set runs

• DIY projects requiring flexible line length solutions

👉 Order your MRCOOL 3/8" x 3/4" No-Vac Coupler Set today and get the confidence of a leak-free, factory-sealed extension for your Central Ducted HyperHeat or VersaPro™ system.