York S1-024-21678-700 Relay Its non-electrolytic build ensures the

Its non-electrolytic build ensures the unit remains corrosion resistant even when exposed to salts

High-Temperature Durability: Robust insulation protects against the extreme thermal cycles common in burner housings

it is constructed from corrosion-resistant brass to withstand non-potable water applications

This HVAC replacement part is the standard choice for technicians seeking a reliable

Manufactured from high-temperature resistant materials

York S1-024-21678-700 Relay Its non-electrolytic build ensures theThe York S1 024 21678 700 is an OEM 24V SPDT Relay designed for heavy duty switching in residential and commercial HVAC control systems. This component serves as the direct 024 21678 000 replacement, ensuring seamless integration into existing control boards without requiring circuit modifications. Engineered with a 24VAC 50 60Hz coil, this Single Pole Double Throw relay provides the necessary electrical isolation between low voltage thermostat