Lennox 42W37 TXV 319847-401 Always allow 15-20 minutes for

Always allow 15-20 minutes for system stabilization between adjustments

Rugged Construction: Specifically designed to withstand the high-heat and moisture conditions of condensing furnaces

using this genuine manifold pipe assembly guarantees correct alignment with the existing orifice brackets and ignition system

this controller maintains precision without the risk of igniting flammable atmospheres

Engineered for natural gas water heater repair

Lennox 42W37 TXV 319847-401 Always allow 15-20 minutes forThe Lennox 42W37 Thermal Expansion Valve (TXV) is a critical HVAC refrigerant metering device engineered for precision performance in 3 ton air conditioning systems and heat pump applications. This OEM Lennox 42W37 valve features a 3 8" x 1 2" ODF connection with a sweat fit design, ensuring a leak resistant seal for professional installations. Utilizing a brass body for enhanced corrosion resistance, this R 410A expansion valve maintains the correct