EG4 Line Extension Set, Mini Split – 12k AC/DC Unit
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Visit CalculatorThe EG4 Line Extension Set for 12k AC/DC Mini Split systems is designed to extend the reach of your HVAC installation while maintaining optimal system performance. Engineered for compatibility with EG4 mini split units, this extension kit includes both liquid and gas refrigerant lines along with essential connection components. Ideal for installations requiring longer line runs, it ensures a secure, efficient, and professional-grade connection without compromising system integrity.
Extended Installation Flexibility - Includes 16.4 ft (5m) refrigerant line extensions, allowing greater placement flexibility for indoor and outdoor units.
Complete Connection Kit - Comes with connectors, retaining pins, and insulation, ensuring a secure and reliable installation.
Pre-Vacuumed Line Compatibility - Designed to work seamlessly with pre-vacuumed refrigerant systems, simplifying installation and reducing setup time.
Optimized for 12k AC/DC Systems - Specifically sized for 12k mini split units, ensuring proper flow and system efficiency.
Durable Construction - Built with high-quality materials to handle system pressure and long-term HVAC use.


Everything you need is included with your product.
| Specification | Details |
| DESIGN PRESSURE (PSIG) | <651 PSI |
| REFRIGERANT | R410A |
| PRE-VACUUMED REFRIGERANT LINE | 16.4 ft. (5 m) |
| CHARGE REQUIRED PER ADDITIONAL FT | 0.2 oz. (6 ml) |
| LIQUID VALVE DIAMETER | 0.25 in. (6.35 mm) |
| GAS VALVE DIAMETER (12K AC/DC) | 0.375 in. (9.53 mm) |
| GAS VALVE DIAMETER (9K/12K AC & 24K AC/DC) | 0.5 in. (12.7 mm) |
What is this line extension set used for?
It extends the distance between indoor and outdoor units in a mini split system while maintaining proper refrigerant flow.
Is this compatible with all mini split systems?
It is specifically designed for EG4 12k AC/DC mini split units, but may be compatible with similar systems using the same specifications.
Does this include both liquid and gas lines?
Yes, it includes both liquid and gas refrigerant lines, along with connectors and insulation.
Do I need additional refrigerant for longer runs?
Yes, additional refrigerant may be required at 0.2 oz per additional foot beyond the included length.
Is this pre-vacuumed?
Yes, it is designed to work with pre-vacuumed systems, helping simplify installation.
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