MRCOOL Pre-Charged Line Set for 2nd Gen Systems (R-454B | DIY Installation) - NV50-3834-O | HVAC System Accessory

Upgrade your MRCOOL Universal 2nd Gen, HyperHeat 2nd Gen, or VersaPro 2nd Gen central ducted heat pump and cased A-Coil system with the MRCOOL No-Vac Pre-Charged Line Set. Engineered for R-454B refrigerant, this innovative, factory pre-charged line set ensures a seamless, stress-free installation—no vacuuming, no refrigerant charging, and no special tools required.

Designed to pair perfectly with MRCOOL’s 2nd Gen Universal Series Heat Pump and Pre-Charged Cased A-Coil, this No-Vac line set delivers unmatched efficiency, safety, and convenience for both professional installers and DIY homeowners.

Key Features & Benefits

•  Compatible with 2nd Gen Systems: Works with MRCOOL Universal 2nd Gen Heat Pumps, Hyper Heat 2nd Gen, VersaPro 2nd Gen, and Pre-Charged Cased A-Coils.
•  Pre-Charged with R-454B Refrigerant: Factory-sealed and ready to install—no need for charging or vacuum pumps.
•  No-Vac Quick Connect Technology: Leak-proof, pre-sealed fittings for a secure, tool-free connection every time.
•  Available in Multiple Lengths: 15′, 25′, 35′, and 50′ options provide flexibility for any setup.
•  DIY Extendable: Use MRCOOL DIY Couplers to link line sets and achieve custom lengths without compromising performance.
•  3/8″ Liquid Line & 3/4″ Suction Line: Optimized for superior refrigerant flow and system efficiency.
•  Durable, Weather-Resistant Construction: Built with high-quality, corrosion-resistant copper for long-term durability.
•  Energy Efficient & Eco-Friendly: Uses R-454B, a low-GWP refrigerant compliant with EPA standards.

Shipping Information - Freight shipping available across the USA. Tracking details provided after dispatch.

Warranty Support - Manufacturer warranty support available on eligible products.

Compatibility Help - Need help choosing the right system? Contact our support team for sizing and compatibility assistance.