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

Engineered for natural gas water heater repair

this controller maintains precision without the risk of igniting flammable atmospheres

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