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

providing all necessary critical seals to restore leak-free operation

This gauge is designed for media temperatures up to 160°F

a full replacement is required to maintain a consistent flame signal

ensuring reliable operation during peak heating season demands

Lennox 14W77 TXV L99H008 Designed as a direct drop-inThe 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