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MRCOOL  |  SKU: GCNV-VUAB-3834
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MRCOOL GeoCool No-Vac Vertical Upflow with Air Box 3/8 3/4 Precharge Line Set GCNV-VUAB-3834

$200.00 USD $269.00

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Description

The MRCOOL GeoCool No‑Vac Vertical Upflow with Air Box 3/8″‑3/4″ Precharge Line Set (model GCNV‑VUAB‑3834) is a purpose‑built refrigerant line set designed specifically for GeoCool geothermal HVAC systems that require a vertical upflow configuration with an air box. It provides a simplified and efficient way to connect the indoor and outdoor components of your geothermal system, ensuring correct refrigerant routing while accommodating the vertical upflow layout with an integrated air box design.

This line set comes factory‑precharged with R‑410A refrigerant and features No‑Vac technology, meaning there’s no need to vacuum or add refrigerant during installation — significantly reducing setup time and complexity. The inclusion of quick‑connect fittings allows for secure, leak‑resistant connections without specialized tools, helping both installers and experienced DIYers complete their geothermal setup more quickly.

Sized with a 3/8″ liquid line and a 3/4″ suction line, the set is optimized for GeoCool systems’ typical refrigerant flow and pressure needs. Its construction uses durable materials to support long‑lasting performance, helping maintain system efficiency and reliability over time.

Ideal for projects where a vertical upflow orientation with an air box is required — such as new geothermal installations or retrofit jobs — this pre‑charged line set streamlines installation and delivers ready‑to‑connect performance. Whether you’re installing a GeoCool heat pump or upgrading an existing geothermal system, the MRCOOL No‑Vac precharge line set offers convenience, durability, and dependable function.

Features

  • Precharged Line Set – Pre-filled with R410A refrigerant for fast, no-hassle installation.
  • Includes Air Box – Comes with a matching air box to streamline integration and airflow management.
  • Quick-Connect Fittings – Secure, tool-free installation saves time and effort.
  • Optimized Vertical Upflow Design – Specifically tailored for vertical geothermal setups, maximizing system efficiency.
  • Rugged and Durable – Built with high-quality components to ensure longevity and consistent performance.

Specifications

Dimensions 53.13 in D x 12.55 in W x 3.9 in H
Refrigerant Type R410a
Liquid Line Size 3/8
Suction Line Size 3/4
Has Batteries No
Contains Electronics No
Contains Chemicals Yes
Contains Aerosol Yes
Contains Compressed Gas Yes
Proposition 65 Warning Yes

Applications

  • Geothermal Heating and Cooling – Designed for residential or commercial geothermal systems.

  • Upflow Installations – Ideal for HVAC systems that push air vertically upwards.

  • Quick Installation Projects – Perfect for contractors or homeowners looking to reduce install time.

  • Precharged System Use – Great for setups where refrigerant handling is limited or undesired.

What’s Included

  • MRCOOL GeoCool No-Vac Vertical Upflow with Air Box 3/8 3/4 Precharge Line Set (GCNV-VUAB-3834)

  • User Manual

Frequently-Asked Questions

Does the line set come precharged?
Yes, the line set is precharged with R410A and includes quick-connect fittings, so no vacuuming or charging is required.

Is the included air box required for installation?
The air box is designed to streamline and support the airflow system but may be optional depending on your installation scenario.

Can this product be used with non-MRCOOL systems?
This product is optimized for MRCOOL GeoCool systems. Compatibility with other systems is not guaranteed.

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