Lennox 42W93 Transformer
As a seasoned technician, you know that the Lennox 42W93 Transformer is a staple for maintaining reliable control voltage in demanding residential and light commercial applications. This genuine HVAC replacement transformer is engineered to step down a primary input of 208/240V to a standard 24V secondary output, providing the 70VA power rating necessary to drive complex control circuits, high-draw relays, and electronic thermostats without voltage sag. Built with a rugged steel casing and a stable foot mount configuration, the 42W93 ensures a secure physical fit within the cabinet while resisting the vibration-induced wear typical of blower compartments. Whether you are troubleshooting a Lennox furnace or a split-system air conditioner, using this OEM 24V transformer guarantees electrical specification matching that aftermarket "will-fit" alternatives often miss. The integrated wire leads streamline the wiring process, making it a "drop-in" solution for restoring system communication and protection for sensitive low-voltage components.
Key Benefits for Contractors- Optimized 70VA Capacity: Delivers ample headroom for modern smart thermostats and multi-stage control boards compared to standard 40VA units.
- Precise Dual-Tap Primary: Supports both 208V and 240V configurations, ensuring compatibility across various job site power supplies.
- Durable Construction: The heavy-duty steel frame and high-temp insulation prevent premature failure in high-static or high-heat environments.
- Universal Compatibility: While designed as a Lennox OEM part, the foot mount and lead wire design simplify installation in a wide range of forced-air equipment.
What is the primary difference between the 42W93 and a standard 40VA transformer?
The Lennox 42W93 provides a 70VA rating, allowing it to handle a higher current load (approximately 2.9 amps at 24V) compared to 40VA units. This is critical for systems with multiple accessories or high-current contactor coils.
Can I use this transformer to replace an older 120V primary unit?
No, this specific model is designed for 208/240V input. Always verify the line voltage at the furnace or air handler before installation to prevent damage to the new component.
Does this unit include internal fuse protection?
While the 42W93 transformer is built to meet rigorous safety standards, we recommend verifying if your specific control board requires an external 3-amp or 5-amp blade fuse to protect the 24V circuit from shorts.
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: $111.98
-65%$111.98
$39.19Lennox 42W93 Transformer
As a seasoned technician, you know that the Lennox 42W93 Transformer is a staple for maintaining reliable control voltage in demanding residential and light commercial applications. This genuine HVAC replacement transformer is engineered to step down a primary input of 208/240V to a standard 24V secondary output, providing the 70VA power rating necessary to drive complex control circuits, high-draw relays, and electronic thermostats without voltage sag. Built with a rugged steel casing and a stable foot mount configuration, the 42W93 ensures a secure physical fit within the cabinet while resisting the vibration-induced wear typical of blower compartments. Whether you are troubleshooting a Lennox furnace or a split-system air conditioner, using this OEM 24V transformer guarantees electrical specification matching that aftermarket "will-fit" alternatives often miss. The integrated wire leads streamline the wiring process, making it a "drop-in" solution for restoring system communication and protection for sensitive low-voltage components.
Key Benefits for Contractors- Optimized 70VA Capacity: Delivers ample headroom for modern smart thermostats and multi-stage control boards compared to standard 40VA units.
- Precise Dual-Tap Primary: Supports both 208V and 240V configurations, ensuring compatibility across various job site power supplies.
- Durable Construction: The heavy-duty steel frame and high-temp insulation prevent premature failure in high-static or high-heat environments.
- Universal Compatibility: While designed as a Lennox OEM part, the foot mount and lead wire design simplify installation in a wide range of forced-air equipment.
What is the primary difference between the 42W93 and a standard 40VA transformer?
The Lennox 42W93 provides a 70VA rating, allowing it to handle a higher current load (approximately 2.9 amps at 24V) compared to 40VA units. This is critical for systems with multiple accessories or high-current contactor coils.
Can I use this transformer to replace an older 120V primary unit?
No, this specific model is designed for 208/240V input. Always verify the line voltage at the furnace or air handler before installation to prevent damage to the new component.
Does this unit include internal fuse protection?
While the 42W93 transformer is built to meet rigorous safety standards, we recommend verifying if your specific control board requires an external 3-amp or 5-amp blade fuse to protect the 24V circuit from shorts.
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
As a seasoned technician, you know that the Lennox 42W93 Transformer is a staple for maintaining reliable control voltage in demanding residential and light commercial applications. This genuine HVAC replacement transformer is engineered to step down a primary input of 208/240V to a standard 24V secondary output, providing the 70VA power rating necessary to drive complex control circuits, high-draw relays, and electronic thermostats without voltage sag. Built with a rugged steel casing and a stable foot mount configuration, the 42W93 ensures a secure physical fit within the cabinet while resisting the vibration-induced wear typical of blower compartments. Whether you are troubleshooting a Lennox furnace or a split-system air conditioner, using this OEM 24V transformer guarantees electrical specification matching that aftermarket "will-fit" alternatives often miss. The integrated wire leads streamline the wiring process, making it a "drop-in" solution for restoring system communication and protection for sensitive low-voltage components.
Key Benefits for Contractors- Optimized 70VA Capacity: Delivers ample headroom for modern smart thermostats and multi-stage control boards compared to standard 40VA units.
- Precise Dual-Tap Primary: Supports both 208V and 240V configurations, ensuring compatibility across various job site power supplies.
- Durable Construction: The heavy-duty steel frame and high-temp insulation prevent premature failure in high-static or high-heat environments.
- Universal Compatibility: While designed as a Lennox OEM part, the foot mount and lead wire design simplify installation in a wide range of forced-air equipment.
What is the primary difference between the 42W93 and a standard 40VA transformer?
The Lennox 42W93 provides a 70VA rating, allowing it to handle a higher current load (approximately 2.9 amps at 24V) compared to 40VA units. This is critical for systems with multiple accessories or high-current contactor coils.
Can I use this transformer to replace an older 120V primary unit?
No, this specific model is designed for 208/240V input. Always verify the line voltage at the furnace or air handler before installation to prevent damage to the new component.
Does this unit include internal fuse protection?
While the 42W93 transformer is built to meet rigorous safety standards, we recommend verifying if your specific control board requires an external 3-amp or 5-amp blade fuse to protect the 24V circuit from shorts.
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.
