The MRCOOL DIY 5th Gen “No-Vac” line set (DIY16-1438-O) is a pre-charged, quick-connect refrigerant line designed to make compatible mini-split installs faster and simpler—no vacuum pump or brazing required in typical DIY setups. This 16 ft set uses 1/4" liquid and 3/8" suction lines and is intended for MRCOOL DIY 5th Gen 6k, 9k, and 12k indoor units using R-454B refrigerant.
Country of Origin
Varies by production batch
Key Features / Specifications
- Part number: DIY16-1438-O
- Brand: MRCOOL
- Series/Generation: DIY 5th Gen
- Line set length: 16 ft
- Connection type: “No-Vac” Quick Connect (pre-charged / quick-connect fittings)
- Refrigerant: R-454B
- Line sizes: 1/4" liquid line x 3/8" suction line
- Compatibility: MRCOOL DIY 5th Gen 6,000 / 9,000 / 12,000 BTU indoor units
- Purpose: Replacement or install line set for compatible MRCOOL DIY systems (battery/charger not applicable)
Ideal For
- DIY mini-split installs needing a 16 ft run without traditional vacuum/brazing steps
- Replacing a damaged line set on MRCOOL DIY 5th Gen 6k–12k systems
- Homeowners wanting quick-connect convenience with factory pre-charged lines
- Layouts where the outdoor unit is positioned relatively close to the indoor head