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MRCOOL  |  SKU: NV50-3834-O
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MRCOOL 50 Ft. R-454B No-Vac Lineset NV50-3834-O

$722.00 USD $749.00

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Description

The MRCOOL 50 ft R-454B No-Vac Line Set (NV50-3834-O) is a pre-charged refrigerant line set engineered for use with MRCOOL VersaPro® 2nd Gen and Hyper Heat® 2nd Gen Central Ducted HVAC systems. This 50-foot line set comes pre-charged with R-454B refrigerant and features No-Vac technology, which eliminates the need for vacuuming or refrigerant charging during installation — significantly simplifying the setup process for both DIY installers and professional HVAC technicians.

The line set includes a 3/8″ liquid line and a 3/4″ suction line, sized to match the refrigerant flow requirements of compatible MRCOOL central ducted systems. Its pre-charged and quick-connect design helps reduce installation time, labor, and the need for specialized tools, while also helping ensure a secure, leak-resistant refrigerant connection.

Built with durable tubing and UV-protected insulation, the NV50-3834-O line set is designed to withstand prolonged outdoor exposure, protecting the internal refrigerant lines from sunlight and environmental conditions. This helps maintain reliable performance and efficiency over its service life.

Ideal for installations where greater distance is needed between indoor and outdoor components, the MRCOOL 50 ft R-454B No-Vac Line Set offers a practical, ready-to-use solution that supports efficient heating and cooling in MRCOOL central ducted HVAC systems without the complexity of traditional line set installations.

Features

  • Pre-Charged Convenience – Arrives factory-charged with R-454B refrigerant, eliminating the need for on-site charging.
  • Quick Installation – No vacuum or nitrogen purge needed; reduces labor time and complexity.
  • Compatibility – Designed for use with MRCOOL Hyper Heat and VersaPro® 2nd Gen systems.
  • Reliable Sealing – Factory-sealed connectors reduce leak potential and ensure long-term system performance.
  • Corrosion Resistant – Durable materials ensure longevity and resistance to environmental damage.

Specifications

Product Specifications

Dimensions 47" D x 47" H x 5" W
Refrigerant Type R-454B
Refrigerant Volume (OZ) 17.19
Line Set Length 49.2 ft
Lineset Fitting Type Quick-Connect
Liquid Line Size 3/8"
Suction Line Size 3/4"
Contains Chemicals Yes
Net Weight (lbs) 45
Gross Weight (lbs) 54

Applications

  • Simplified Installation – Ideal for DIY and professional HVAC installations without specialized tools.

  • MRCOOL Compatibility – Tailored for Hyper Heat and VersaPro® systems.

  • Time-Saving Solution – Cuts down on setup time by eliminating the charging step.

  • Environmentally Friendly – Uses R-454B refrigerant with lower global warming potential.

What’s Included

  • MRCOOL 50 Ft. R-454B No-Vac Lineset (NV50-3834-O)

  • User Manual

Frequently-Asked Questions

Do I need to vacuum this lineset before use?
No. This lineset is pre-charged and factory-sealed, so vacuuming is not necessary.

Is it compatible with other brands besides MRCOOL?
This lineset is specifically designed for MRCOOL systems and may not be compatible with other manufacturers’ units.

Can it be reused on another system?
Reusing No-Vac linesets is not recommended, as the refrigerant charge may not be adequate after disconnection.

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