this unit is a reliable solution for restoring communication between the HVAC control circuit and the diagnostic interface

42-42139-11

the 26H78 ensures high-reliability performance in Lennox G25

the strainer body

Corrosion Resistance: Formulated to resist the corrosive effects of combustion byproducts in the exhaust stream

Berko 410171001 Relay this unit is a reliableThe Berko 410171001 Relay is a specialized 24V time delay relay engineered for precise sequencing in commercial and industrial heating systems. As an essential Marley Engineered Products replacement part, this component is designed to manage the staggered activation of heating elements, preventing high inrush current and reducing stress on your electrical distribution panel. This HVAC control relay is a direct OEM fit for Berko CUH900 series heaters