Lennox 42W35 TXV L99H008 Durable Construction: Built to withstand

Durable Construction: Built to withstand constant thermal cycling within the combustion chamber housing

5" Water Column for stable natural gas combustion

Designed as a direct drop-in replacement for legacy modules

Common Technical Questions How do I wire the 0-10 VDC output for modulating valves

it maintains system efficiency by modulating refrigerant flow based on heat load demands

Lennox 42W35 TXV L99H008 Durable Construction: Built to withstandThe Lennox 42W35 is a professional grade R 410A thermostatic expansion valve (TXV) engineered for high precision refrigerant metering in residential and light commercial cooling systems. This OEM Lennox 100679 22 replacement features a 30 inch capillary tube designed to maintain consistent superheat across varying thermal loads, effectively preventing evaporator flooding and protecting the compressor from liquid slugging. With connection