The Rheem-Ruud 42-25106-01 Defrost Relay is a heavy-duty 24V DPDT (Double Pole Double Throw) component designed for precise defrost cycle management in residential and commercial condensing units

As a genuine Apollo Valves (Conbraco) component

check the packaging specifics or your unit’s schematic to confirm if additional lead wires are required for your particular installation

The Johnson Controls R-3710-2007 is a high-precision

Using genuine York replacement parts ensures that the mounting footprint and electrical terminal spacing align perfectly with existing wiring harnesses

York S1-025-27760-001 Temp Control The Rheem-Ruud 42-25106-01 Defrost RelayThe York S1 025 27760 001 Temp Control is a specialized Single Pole Double Throw (SPDT) thermostat designed for precise temperature management in HVAC systems. Engineered for reliability in commercial air conditioning and refrigeration applications, this control features fixed setpoints with a 45F Open and 60F Close configuration. This specific temperature range is critical for managing defrost cycles and preventing evaporator coil freeze up. As an