The Lennox 11U99 (Part No. 100679-52) Expansion Valve is a precision-engineered thermostatic expansion valve (TXV) designed to regulate refrigerant flow and enhance system performance in HVAC applications. This valve ensures optimal superheat control, improving energy efficiency and maintaining consistent cooling capacity under varying load conditions.Built to meet Lennox’s high manufacturing standards, the 11U99 TXV supports systems using R-410A refrigerant and is commonly used in residential and light commercial air conditioning units. Its durable construction and accurate metering make it an essential component for maintaining system longevity and performance.Key Features:
- Genuine Lennox OEM component
- Part Number: 11U99 / 100679-52
- Refrigerant: R-410A
- Function: Thermostatic Expansion Valve (TXV)
- Enhances efficiency and compressor protection by regulating superheat
- Compatible with select Lennox systems
