
Lennox 81G65 Relay
The Lennox 81G65 Latching Relay is a specialized DPDT (Double Pole Double Throw) control component engineered for precise electrical switching in commercial and residential HVAC systems. Operating on a 24VAC 50/60Hz coil, this relay utilizes a magnetic latching mechanism that maintains its contact state without requiring a continuous power signal. This design is essential for HVAC lockout circuits and energy-saving control logic where maintaining system status during power fluctuations or minimizing parasitic draw is critical. As a genuine OEM Lennox replacement part (also identified as 81G6501), this component ensures seamless 24V control circuit compatibility with existing Lennox air handlers, heat pumps, and furnaces. The DPDT contact configuration allows for the simultaneous control of two separate circuits, making it an ideal solution for technicians troubleshooting intermittent signaling issues or failed latching control relays. With its rugged construction and standard mounting footprint, the Lennox 81G65 is the industry standard for restoring reliable automated operation to complex climate control interfaces.
Key Benefits- State Retention: The magnetic latching design holds its position after the initial 24VAC pulse, ensuring stable performance and reduced energy consumption.
- Versatile Switching: Features a DPDT configuration for controlling multiple voltage paths or signaling circuits from a single input.
- OEM Precision: Guaranteed Lennox 81G6501 compatibility for a direct "drop-in" fit, eliminating the need for field modifications or bracket adjustments.
- System Reliability: Critical for high-duty cycle applications where standard non-latching relays would overheat or fail prematurely.
What are the benefits of using a latching relay vs a standard relay?
A latching relay like the 81G65 is more efficient because it only requires power to change states, not to maintain them, which is vital for specific HVAC safety lockout sequences.
Can the Lennox 81G65 replace an 81G6501 model?
Yes, the 81G65 is a direct functional and physical replacement for the Lennox 81G6501, maintaining identical 24V coil and DPDT contact ratings.
How do I verify if my Lennox relay is defective?
If the relay fails to "click" and hold its contact state after receiving a 24VAC signal, or if there is no continuity across the DPDT contacts when latched, the internal coil or mechanism has likely failed.
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.
Original: $224.80
-65%$224.80
$78.68Lennox 81G65 Relay
The Lennox 81G65 Latching Relay is a specialized DPDT (Double Pole Double Throw) control component engineered for precise electrical switching in commercial and residential HVAC systems. Operating on a 24VAC 50/60Hz coil, this relay utilizes a magnetic latching mechanism that maintains its contact state without requiring a continuous power signal. This design is essential for HVAC lockout circuits and energy-saving control logic where maintaining system status during power fluctuations or minimizing parasitic draw is critical. As a genuine OEM Lennox replacement part (also identified as 81G6501), this component ensures seamless 24V control circuit compatibility with existing Lennox air handlers, heat pumps, and furnaces. The DPDT contact configuration allows for the simultaneous control of two separate circuits, making it an ideal solution for technicians troubleshooting intermittent signaling issues or failed latching control relays. With its rugged construction and standard mounting footprint, the Lennox 81G65 is the industry standard for restoring reliable automated operation to complex climate control interfaces.
Key Benefits- State Retention: The magnetic latching design holds its position after the initial 24VAC pulse, ensuring stable performance and reduced energy consumption.
- Versatile Switching: Features a DPDT configuration for controlling multiple voltage paths or signaling circuits from a single input.
- OEM Precision: Guaranteed Lennox 81G6501 compatibility for a direct "drop-in" fit, eliminating the need for field modifications or bracket adjustments.
- System Reliability: Critical for high-duty cycle applications where standard non-latching relays would overheat or fail prematurely.
What are the benefits of using a latching relay vs a standard relay?
A latching relay like the 81G65 is more efficient because it only requires power to change states, not to maintain them, which is vital for specific HVAC safety lockout sequences.
Can the Lennox 81G65 replace an 81G6501 model?
Yes, the 81G65 is a direct functional and physical replacement for the Lennox 81G6501, maintaining identical 24V coil and DPDT contact ratings.
How do I verify if my Lennox relay is defective?
If the relay fails to "click" and hold its contact state after receiving a 24VAC signal, or if there is no continuity across the DPDT contacts when latched, the internal coil or mechanism has likely failed.
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.
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Description
The Lennox 81G65 Latching Relay is a specialized DPDT (Double Pole Double Throw) control component engineered for precise electrical switching in commercial and residential HVAC systems. Operating on a 24VAC 50/60Hz coil, this relay utilizes a magnetic latching mechanism that maintains its contact state without requiring a continuous power signal. This design is essential for HVAC lockout circuits and energy-saving control logic where maintaining system status during power fluctuations or minimizing parasitic draw is critical. As a genuine OEM Lennox replacement part (also identified as 81G6501), this component ensures seamless 24V control circuit compatibility with existing Lennox air handlers, heat pumps, and furnaces. The DPDT contact configuration allows for the simultaneous control of two separate circuits, making it an ideal solution for technicians troubleshooting intermittent signaling issues or failed latching control relays. With its rugged construction and standard mounting footprint, the Lennox 81G65 is the industry standard for restoring reliable automated operation to complex climate control interfaces.
Key Benefits- State Retention: The magnetic latching design holds its position after the initial 24VAC pulse, ensuring stable performance and reduced energy consumption.
- Versatile Switching: Features a DPDT configuration for controlling multiple voltage paths or signaling circuits from a single input.
- OEM Precision: Guaranteed Lennox 81G6501 compatibility for a direct "drop-in" fit, eliminating the need for field modifications or bracket adjustments.
- System Reliability: Critical for high-duty cycle applications where standard non-latching relays would overheat or fail prematurely.
What are the benefits of using a latching relay vs a standard relay?
A latching relay like the 81G65 is more efficient because it only requires power to change states, not to maintain them, which is vital for specific HVAC safety lockout sequences.
Can the Lennox 81G65 replace an 81G6501 model?
Yes, the 81G65 is a direct functional and physical replacement for the Lennox 81G6501, maintaining identical 24V coil and DPDT contact ratings.
How do I verify if my Lennox relay is defective?
If the relay fails to "click" and hold its contact state after receiving a 24VAC signal, or if there is no continuity across the DPDT contacts when latched, the internal coil or mechanism has likely failed.
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.












