this HKSX series auxiliary heater provides reliable supplemental warmth or primary emergency heating for residential HVAC systems

Always confirm compatibility with your unit's model specifications

This part is widely used in many Williams wall heaters

maintaining stable operation across critical relays

While universal shafts exist

Bard 5651-213 TXV 326058-755 this HKSX series auxiliary heaterThe Bard 5651 213 thermostatic expansion valve is a precision engineered TXV for HVAC systems designed to maintain optimal superheat across varying evaporator loads. Featuring 3 8 x 3 8 connections, this balance port expansion valve ensures stable refrigerant flow control, preventing liquid slugging and protecting the compressor during low load conditions. Built for durability in commercial and residential applications, the Bard replacement TXV is