MRCOOL® Pre-Charged Line Set for 2nd Gen Systems (R-454B | DIY Installation)

MRCOOL® No-Vac® Pre-Charged Line Set – 3/8" x 3/4" for Universal® 2nd Gen, Hyper Heat 2nd Gen, VersaPro® 2nd Gen & Cased A-Coil Systems

Complete your MRCOOL® central ducted HVAC installation with the MRCOOL® No-Vac® Pre-Charged Line Set, engineered specifically for R-454B refrigerant systems. Designed for compatibility with MRCOOL® Universal® 2nd Gen, Hyper Heat 2nd Gen, VersaPro® 2nd Gen, and Pre-Charged Cased A-Coil systems, this factory pre-charged line set delivers a faster, cleaner, and easier installation process without the need for vacuum pumps or refrigerant charging.

Featuring MRCOOL’s industry-leading No-Vac® Quick Connect technology, these pre-charged line sets are ideal for both professional HVAC installers and advanced DIY homeowners looking for a reliable and efficient HVAC installation solution.

Available Line Set Lengths

• 15-Foot No-Vac® Pre-Charged Line Set
• 25-Foot No-Vac® Pre-Charged Line Set
• 35-Foot No-Vac® Pre-Charged Line Set
• 50-Foot No-Vac® Pre-Charged Line Set

Need additional length? MRCOOL® DIY Couplers allow you to safely connect multiple line sets together for custom installation configurations. Because apparently houses refuse to place condensers exactly 15 feet away from air handlers like civilized structures.

Key Features & Benefits

• Compatible with MRCOOL® 2nd Gen Systems – Designed for use with MRCOOL® Universal® 2nd Gen Heat Pumps, Hyper Heat 2nd Gen systems, VersaPro® 2nd Gen systems, and Pre-Charged Cased A-Coils.
• Pre-Charged with R-454B Refrigerant – Factory sealed and ready for installation with no additional refrigerant charging required.
• No-Vac® Quick Connect Technology – Eliminates the need for vacuuming, gauges, or specialty HVAC charging tools during installation.
• Multiple Length Options Available – Choose from 15', 25', 35', or 50' line sets to fit your installation needs.
• DIY Extendable Design – Compatible with MRCOOL® DIY Couplers for extended custom-length installations.
• 3/8" Liquid Line & 3/4" Suction Line – Properly sized for optimized refrigerant flow and maximum system efficiency.
• Durable Copper Construction – Manufactured with corrosion-resistant copper tubing and premium insulation for long-term reliability.
• Eco-Friendly Refrigerant Compatibility – Supports R-454B refrigerant, a lower global warming potential (GWP) refrigerant designed to meet modern EPA efficiency standards.

Why Choose MRCOOL® No-Vac® Line Sets?

• 100% genuine MRCOOL® factory-tested product
• Pre-charged and sealed for simplified installation
• No vacuuming or refrigerant handling required
• Ideal for DIY-friendly installations and professional HVAC applications
• Engineered for reliable performance and leak-resistant operation
• Designed to work seamlessly with MRCOOL® R-454B systems

Buy from an Authorized MRCOOL® Dealer

When you purchase from MRCOOL HVAC Direct, you are buying from an authorized MRCOOL® dealer committed to providing genuine equipment, knowledgeable support, and dependable service.

• 100% Genuine MRCOOL® Products – No aftermarket replicas or unauthorized resellers
• Expert HVAC Support – Assistance with compatibility, installation, and system pairing
• Fast & Reliable Shipping – Quick order processing and nationwide delivery
• Competitive Pricing – Exceptional value on genuine MRCOOL® HVAC accessories and equipment

Upgrade Your MRCOOL® System Today

Choose the MRCOOL® No-Vac® Pre-Charged Line Set for a faster, cleaner, and more reliable installation experience. Designed specifically for MRCOOL® Universal® 2nd Gen, Hyper Heat 2nd Gen, VersaPro® 2nd Gen, and compatible Cased A-Coil systems using R-454B refrigerant, this line set helps ensure maximum performance, efficiency, and installation convenience.