Description
The Armstrong Furnace R100796-02 is an OEM outdoor thermostatic expansion valve (TXV) assembly designed as a direct replacement for compatible Armstrong Furnace systems. The TXV assembly plays a critical role in your HVAC system’s refrigeration circuit, precisely metering refrigerant flow into the evaporator coil to maintain optimal superheat levels and maximize system efficiency.
Key Features
- OEM Armstrong Furnace replacement part — engineered for precise fit and function
- Outdoor-rated TXV assembly built to withstand exterior installation conditions
- Maintains optimal refrigerant superheat for peak system efficiency
- Helps protect the compressor by preventing liquid refrigerant slugging
- Direct drop-in replacement minimizes installation time and labor
Why Replace Your TXV Assembly?
A failing thermostatic expansion valve can cause a range of system problems, including poor cooling performance, high suction pressure, frost on the evaporator, or compressor damage. Replacing the TXV assembly with a genuine Armstrong Furnace OEM part restores proper refrigerant metering and ensures your system operates within designed parameters.
Compatibility
- Designed for use with compatible Armstrong Furnace HVAC systems
- Always verify compatibility with your equipment model number before ordering
Installation Notes
- Intended for outdoor unit installation
- Professional installation by a licensed HVAC technician is recommended
- Refer to the equipment service manual for proper torque specifications and refrigerant charging procedures







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