MRCOOL 3/8 No-Vac Coupler + 3/4 No-Vac Coupler for Universal & Central Ducted Quick Connect Line Set

Description

MRCOOL No-Vac® Coupler Kit 3/8" x 3/4" (Model: NVCOUPLER-3834)

The MRCOOL No-Vac® Coupler Kit is designed to extend the reach of your HVAC installation by securely connecting two MRCOOL Universal precharged line sets together, allowing total line set lengths of up to 75 feet. Engineered for speed, reliability, and leak-free performance, this coupler kit maintains the integrity of MRCOOL’s No-Vac® system—eliminating the need for vacuuming, flaring, or additional refrigerant charging. Built from durable copper with double male-end fittings, it ensures a tight, dependable connection for professional installations. This coupler is fully compatible with MRCOOL Central Ducted systems, including Universal, Hyper Heat, and VersaPro, but is not compatible with MRCOOL DIY mini split line sets.

Key Features

• Extends MRCOOL Universal precharged line sets up to 75 ft total length

• Maintains No-Vac® quick-connect technology

• No vacuuming, flaring, or refrigerant handling required

• Durable copper construction for long-lasting performance

• Double male-end coupling for secure, leak-resistant connections

• Designed for professional HVAC installations

• Compatible with Central Ducted systems only (not DIY mini splits)

Specifications

• Brand: MRCOOL

• Series: Line Set Fittings

• Model: NVCOUPLER-3834

• Equipment Type: Coupler

• Line Set Sizes: 3/8" liquid line + 3/4" suction line

• Fitting Type: Double male-end coupling

• Color: Copper

• Color Family: Bronze / Copper Metallic

• GTIN / UPC: 810035933668

• Net Dimensions (L × W × H): 4.5" × 6" × 2"

• Net Weight: 6 lbs

• Contains Electronics: No

• Contains Chemicals / Gas: No

• Proposition 65 Warning: Yes

• Restricted States: GU, PR, VI

What’s Included

• 1 × 3/8" No-Vac® Coupler

• 1 × 3/4" No-Vac® Coupler