Rheem-Ruud 42-25104-06 Relay

The Rheem-Ruud 42-25104-06 Relay is a heavy-duty 24V SPDT NO/NC Relay engineered for precise switching in residential and commercial HVACR applications. As an essential OEM HVAC replacement part, this enclosed fan relay is designed to manage high-amperage loads, featuring a 14.0 FLA rating at 120V and 8.0 FLA at 230V. This switching relay provides reliable control for blower motors, heat pumps, and integrated furnace circuits, ensuring proper system sequencing and electrical isolation. The 42-25104-06 serves as the direct crossover replacement for 42-101208-01, 42-19423-01, and 8201-5579, allowing for a seamless drop-in fit without modifying existing wiring harnesses or mounting brackets.

Built for the rigors of field service, this 24VAC coil relay features standard 1/4-inch quick-connect terminals for rapid installation. Its SPDT contact configuration allows for versatile normally open and normally closed operations, critical for modern multi-stage equipment. With a resistive rating of 25A at 277V, this component handles the inductive kickback of heavy inductive loads, reducing contact pitting and extending the service life of the control board. Whether you are troubleshooting a Rheem furnace fan relay failure or performing a preventive upgrade, this genuine part maintains the original equipment’s performance specifications and safety standards.

• Direct OEM Replacement: Replaces 42-101208-01 and dozens of legacy Rheem/Ruud part numbers, ensuring total compatibility.
• High Amperage Capacity: Rated for 14 Amps at 120V and 8 Amps at 230V to handle a wide range of blower and condenser motors.
• Universal 24V Control: Works with standard 24V 50/60Hz control circuits found in most air handlers and furnaces.
• Robust SPDT Logic: Provides both NO and NC contacts for flexible system integration and emergency stop logic.
• Industrial-Grade Contacts: Engineered to minimize resistance and prevent carbon buildup during rapid cycling.

Is the 42-25104-06 compatible with older 42-101208-01 models?
Yes, this is the current manufacturer-specified direct replacement for the 42-101208-01 and maintains identical electrical and physical footprints.

What are the symptoms of a failing HVAC relay?
Common signs include the blower motor failing to engage, a "chattering" noise from the control cabinet, or the fan running continuously even after the thermostat is satisfied.

Can this relay be used on non-Rheem equipment?
While designed for Rheem and Ruud, it can function in any 24V application requiring an SPDT relay, provided the total amperage and coil voltage align with the technical specs.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.