The MRCOOL DIY25-1438-O is a factory pre-charged Quick Connect “no-vac” lineset designed for MRCOOL 5th Gen DIY mini-split systems. With a 25-foot length and 1/4" liquid x 3/8" suction line sizing, it’s built to match 6,000 / 9,000 / 12,000 BTU DIY units and helps make installation faster—no vacuum pump, gauges, or field charging required when installed as intended.
Country of Origin: Varies by production batch
Key Features / Specifications
- Part number: DIY25-1438-O
- System generation: MRCOOL DIY 5th Gen
- Length: 25 ft
- Line sizes: 1/4" liquid x 3/8" suction
- Refrigerant charge: Pre-charged (no-vac Quick Connect style)
- Refrigerant type: R-454B
- Connection type: MRCOOL Quick Connect fittings
- Compatibility: Designed for 6K, 9K, and 12K MRCOOL DIY 5th Gen systems
Ideal For:
- Extending line length on MRCOOL DIY 5th Gen 6K–12K systems
- Replacing a damaged lineset with the correct 1/4" x 3/8" sizing
- DIY installs where quick-connect, factory-charged convenience matters
- Installations needing a 25 ft run between indoor and outdoor units