providing all necessary critical seals to restore leak-free operation

Energy Efficient 24V Control: Operates on standard 24VAC/VDC power

Designed as a direct drop-in for compatible York HVAC units

Enhanced Safety: The manual reset mechanism acts as a high-temperature cutout to protect downstream components from thermal runaway

Key Benefits Universal Fuel Compatibility: Engineered to work seamlessly with natural

Lennox 14W77 TXV L99H008 providing all necessary critical sealsThe Lennox 14W77 is an OEM thermostatic expansion valve (TXV) engineered for high precision refrigerant metering in residential and light commercial R410A systems. Designed as a direct 100254 02 replacement, this valve features 3 8" x 1 2" ODF connections and is critical for maintaining the balance between liquid and vapor in the evaporator. By accurately regulating the refrigerant flow based on load demand, the 14W77 prevents compressor floodback and