Lennox 21W89 Transformer/Relay
For veteran technicians looking to maintain system integrity, the Lennox 21W89 Transformer/Relay is a critical OEM component engineered for precision HVAC voltage regulation. This heavy-duty transformer/relay assembly is designed to step down 120V line voltage to a consistent 24VAC output at 40VA, 50/60Hz, ensuring stable low-voltage control circuit operation even in demanding environments. By integrating a high-performance electromechanical relay, the 21W89 functions as a reliable automatic circuit switch, dictating current flow based on thermostat or control board signals to protect downstream sensitive electronics from fluctuations. This industrial-grade HVAC relay is a direct Lennox 21W89 replacement for various commercial and residential units, providing the robust electrical distribution required for seamless heating and cooling cycles. Its durable construction is built to withstand thermal stress and frequent switching, making it an essential stocked part for immediate field repairs and HVAC preventative maintenance protocols.
Key Benefits- Universal OEM Compatibility: Verified as a genuine replacement for numerous Lennox equipment models to ensure factory-spec fitment.
- Integrated Relay Control: Combines a 40VA transformer with a built-in relay for efficient space-saving installation and simplified wiring.
- Enhanced System Protection: Safeguards control boards and thermostats by providing isolated, regulated power and shielding against electrical overloads.
- High-Duty Cycle Performance: Engineered for continuous operation in both heating and cooling applications under varied load conditions.
- What are the voltage specifications for the Lennox 21W89? This unit operates on a 120VAC primary input and delivers a regulated 24VAC secondary output at a 40VA rating, suitable for most low-voltage control systems.
- Can I use this to replace a standard 40VA transformer? Yes, provided the circuit requires the integrated relay functionality characteristic of the 21W89 assembly for automated switching.
- How does this relay assembly improve system reliability? By utilizing high-quality internal contacts and copper windings, it reduces the risk of voltage drops and relay chattering during peak demand.
This item is not eligible for free shipping.
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: $88.52
-65%$88.52
$30.98Lennox 21W89 Transformer/Relay
For veteran technicians looking to maintain system integrity, the Lennox 21W89 Transformer/Relay is a critical OEM component engineered for precision HVAC voltage regulation. This heavy-duty transformer/relay assembly is designed to step down 120V line voltage to a consistent 24VAC output at 40VA, 50/60Hz, ensuring stable low-voltage control circuit operation even in demanding environments. By integrating a high-performance electromechanical relay, the 21W89 functions as a reliable automatic circuit switch, dictating current flow based on thermostat or control board signals to protect downstream sensitive electronics from fluctuations. This industrial-grade HVAC relay is a direct Lennox 21W89 replacement for various commercial and residential units, providing the robust electrical distribution required for seamless heating and cooling cycles. Its durable construction is built to withstand thermal stress and frequent switching, making it an essential stocked part for immediate field repairs and HVAC preventative maintenance protocols.
Key Benefits- Universal OEM Compatibility: Verified as a genuine replacement for numerous Lennox equipment models to ensure factory-spec fitment.
- Integrated Relay Control: Combines a 40VA transformer with a built-in relay for efficient space-saving installation and simplified wiring.
- Enhanced System Protection: Safeguards control boards and thermostats by providing isolated, regulated power and shielding against electrical overloads.
- High-Duty Cycle Performance: Engineered for continuous operation in both heating and cooling applications under varied load conditions.
- What are the voltage specifications for the Lennox 21W89? This unit operates on a 120VAC primary input and delivers a regulated 24VAC secondary output at a 40VA rating, suitable for most low-voltage control systems.
- Can I use this to replace a standard 40VA transformer? Yes, provided the circuit requires the integrated relay functionality characteristic of the 21W89 assembly for automated switching.
- How does this relay assembly improve system reliability? By utilizing high-quality internal contacts and copper windings, it reduces the risk of voltage drops and relay chattering during peak demand.
This item is not eligible for free shipping.
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
For veteran technicians looking to maintain system integrity, the Lennox 21W89 Transformer/Relay is a critical OEM component engineered for precision HVAC voltage regulation. This heavy-duty transformer/relay assembly is designed to step down 120V line voltage to a consistent 24VAC output at 40VA, 50/60Hz, ensuring stable low-voltage control circuit operation even in demanding environments. By integrating a high-performance electromechanical relay, the 21W89 functions as a reliable automatic circuit switch, dictating current flow based on thermostat or control board signals to protect downstream sensitive electronics from fluctuations. This industrial-grade HVAC relay is a direct Lennox 21W89 replacement for various commercial and residential units, providing the robust electrical distribution required for seamless heating and cooling cycles. Its durable construction is built to withstand thermal stress and frequent switching, making it an essential stocked part for immediate field repairs and HVAC preventative maintenance protocols.
Key Benefits- Universal OEM Compatibility: Verified as a genuine replacement for numerous Lennox equipment models to ensure factory-spec fitment.
- Integrated Relay Control: Combines a 40VA transformer with a built-in relay for efficient space-saving installation and simplified wiring.
- Enhanced System Protection: Safeguards control boards and thermostats by providing isolated, regulated power and shielding against electrical overloads.
- High-Duty Cycle Performance: Engineered for continuous operation in both heating and cooling applications under varied load conditions.
- What are the voltage specifications for the Lennox 21W89? This unit operates on a 120VAC primary input and delivers a regulated 24VAC secondary output at a 40VA rating, suitable for most low-voltage control systems.
- Can I use this to replace a standard 40VA transformer? Yes, provided the circuit requires the integrated relay functionality characteristic of the 21W89 assembly for automated switching.
- How does this relay assembly improve system reliability? By utilizing high-quality internal contacts and copper windings, it reduces the risk of voltage drops and relay chattering during peak demand.
This item is not eligible for free shipping.
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.
