Lennox 67K65 Fan Relay

The Lennox 67K65 24V DPDT Fan Relay is a heavy-duty field replacement designed for precision switching in residential and commercial HVAC systems. This Double Pole Double Throw (DPDT) relay allows for the simultaneous control of two independent circuits, making it an essential component for multifaceted fan and blower motor applications. Known globally as a direct equivalent to Lennox 67K6501, this 24 VAC coil relay is engineered for high-cycle reliability and seamless integration into Lennox air handlers and furnaces. With a 15 Amp contact rating and 1/4-inch quick connect tabs, it provides a secure, low-resistance electrical interface that simplifies field installation. It is frequently utilized in low ambient kits and variable speed fan applications to maintain optimal head pressure and airflow. Choosing this genuine OEM Lennox part ensures that the inductive loads and switching frequencies match the original equipment manufacturer’s specifications for long-term system stability.

Key Benefits

• Dual-Circuit Control: The DPDT configuration enables the 67K65 relay to manage multiple components, such as fan motors and auxiliary heat kits, from a single 24V control signal.
• Broad Compatibility: This part is identical to Lennox 67K6501 and replaces various legacy relays used in popular LGM and TSA series units.
• Durable Construction: Built to withstand the continuous demanding cycles of HVAC blower motor operation without premature contact pitting.
• Standardized Mounting: Features a robust flange mount design that fits standardized bracket footprints found in most Lennox electrical panels.

Common Questions

Is the 67K65 interchangeable with the Lennox 67K6501?
Yes, the 67K65 and 67K6501 are functionally identical. Professionals can use either part number to maintain the same electrical specifications and DPDT switching logic within the system.

What are the electrical ratings for this 24V fan relay?
The relay features a 24 VAC coil and is typically rated for up to 15 Amps. It is designed to handle the high inrush currents associated with condenser fan motors and blower assemblies.

How do I wire this relay for a fan speed application?
Ensure the 24V power harness is connected to the coil terminals. Use the 1/4-inch QC tabs to route line voltage through the normally open or normally closed poles as dictated by the specific Lennox wiring diagram for your unit.

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.