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Installers should note the 750-step resolution and 1
maintaining the UL listing and integrity of the original appliance
A worn exhaust gasket allows this acidic condensate to leak into the furnace cabinet
ensuring the discharge air or liquid temperature remains within the narrow specified operational band
Lennox 14W77 TXV Freon Installers should note the 750-stepThe 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