Lennox 39C64 - SA-13S Moisture & Liquid Indicator, 3/8" ODF Solder Connections
The Lennox 39C64 - SA-13S Moisture & Liquid Indicator is a vital diagnostic and monitoring tool for HVAC systems, engineered to provide quick and reliable insight into refrigerant system health. This compact yet durable component performs two essential functions: detecting the presence of moisture in the refrigerant and providing a clear view of liquid refrigerant flow through the system.
Moisture Detection Functionality
At the heart of this indicator is a moisture-sensitive element that changes color depending on the amount of moisture present in the refrigerant. This visual indicator allows technicians to instantly verify whether the system is operating under safe moisture levels or if a filter-drier replacement or evacuation is necessary. Accurate moisture monitoring helps protect the compressor and other components from corrosion, acid formation, and reduced efficiency caused by excess moisture.
At the heart of this indicator is a moisture-sensitive element that changes color depending on the amount of moisture present in the refrigerant. This visual indicator allows technicians to instantly verify whether the system is operating under safe moisture levels or if a filter-drier replacement or evacuation is necessary. Accurate moisture monitoring helps protect the compressor and other components from corrosion, acid formation, and reduced efficiency caused by excess moisture.
Liquid Sight Glass
The integrated sight glass provides a visual inspection window into the liquid line, enabling observation of refrigerant flow characteristics. Technicians can quickly diagnose system conditions such as undercharging, flash gas, or flow restrictions, all of which may impact performance and efficiency. The sight glass can also be used during charging to verify proper system filling and refrigerant phase.
The integrated sight glass provides a visual inspection window into the liquid line, enabling observation of refrigerant flow characteristics. Technicians can quickly diagnose system conditions such as undercharging, flash gas, or flow restrictions, all of which may impact performance and efficiency. The sight glass can also be used during charging to verify proper system filling and refrigerant phase.
Construction and Compatibility
Built with a corrosion-resistant brass body and designed for durability under high-pressure conditions, the SA-13S is suitable for long-term use in residential and light commercial systems. It features 3/8" ODF (Outside Diameter Female) solder connections for a secure, leak-free brazed installation into copper refrigerant lines.
Built with a corrosion-resistant brass body and designed for durability under high-pressure conditions, the SA-13S is suitable for long-term use in residential and light commercial systems. It features 3/8" ODF (Outside Diameter Female) solder connections for a secure, leak-free brazed installation into copper refrigerant lines.
The Lennox 39C64 indicator is compatible with a wide range of refrigerants, including modern blends like R-410A and legacy types like R-22, making it a versatile solution for both new and retrofit applications.
Specifications:
- Manufacturer: Lennox
- Part Number: 39C64
- Model: SA-13S
- Connection Type: 3/8" ODF Solder
- Body Material: Brass
- Functions: Moisture indication, liquid refrigerant flow verification
- Refrigerant Compatibility: R-410A, R-22, and other common refrigerants
- Application: Residential and light commercial HVAC systems
Whether you’re commissioning a new system, performing routine maintenance, or troubleshooting performance issues, the Lennox 39C64 provides the clarity and confidence you need to ensure efficient and reliable operation.
Available now at Beenimax – your reliable source for genuine Lennox components.