MRCOOL DIY 5th Gen 25 ft. 3/8" x 5/8" Pre-Charged Quick Connect Line Set (for 24K & 36K Indoor Units) - DIY25-3858-O | HVAC System Accessory

The MRCOOL DIY 5th Generation 25 ft. Pre-Charged Quick Connect Line Set is the standard-length refrigerant line set for MRCOOL’s 24K and 36K indoor units. Built for homeowners and HVAC professionals alike, this line set features 3/8″ liquid and 5/8″ suction lines, factory pre-charged with R-454B refrigerant, and sealed for leak-free performance.

Designed for easy installation with MRCOOL DIY 5th Gen single-zone and multi-zone systems, this 25 ft. line set comes equipped with Quick Connect fittings, making it possible to install without vacuum pumps, gauges, or licensed technicians.

 Key Features

• Length: 25 feet – standard for most DIY mini split installations

• Line Sizes: 3/8″ liquid x 5/8″ suction – perfectly sized for 24K & 36K units

• Refrigerant: Pre-charged with eco-friendly R-454B

• Connection: Quick Connect fittings – no vacuuming, brazing, or special tools needed

• Durability: White UV-resistant insulation with robust copper line construction

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.