Armstrong Furnace R38999D018 Heat Exchanger 30067439-890 though it must be piped

though it must be piped so the paddle closes against the direction of flow

this 5" rolling diaphragm provides the mechanical integrity required for accurate stem positioning in high-ambient environments

this specific part number includes the immersion well

the Schneider Electric (Erie) VM2221 Valve Body is a standard for professional reliability

Reliable Switching: Heavy-duty internal contacts ensure consistent electrical signaling to the control board

Armstrong Furnace R38999D018 Heat Exchanger 30067439-890 though it must be pipedThe Armstrong Furnace R38999D018 Heat Exchanger is a critical OEM replacement part designed to restore the efficiency and safety of your HVAC system. Engineered from high grade stainless steel, this primary heat exchanger assembly is built to withstand extreme thermal cycling while preventing hazardous combustion gas leaks. As a genuine Armstrong Air component, the R38999D018 ensures a precise fit and seamless integration with compatible furnace