Lennox 49K42 Expansion Valve 326058-758 This kit is built to

This kit is built to meet UL standards

or visible breaks in the resistive coil

Common Questions Is the 150S-M-HD compatible with older 150 Series bodies

The rail features pre-slotted holes for quick attachment to backpanels using standard self-tapping screws or bolts

Lennox 49K42 Expansion Valve 326058-758 This kit is built toWhen you're dealing with a starving evaporator or inconsistent superheat on a Lennox system, the Lennox 49K42 Expansion Valve is the specified OEM solution for precise refrigerant metering. This thermostatic expansion valve (TXV) is engineered to handle variable load conditions, ensuring the evaporator coil maintains the correct liquid to vapor transition point across varying ambient temperatures. Built for high performance HVAC refrigerant control,