Lennox 42W93 (LB-74929) is a 70 VA OEM HVAC control transformer designed to step down 208/240 VAC primary power to a 24 VAC secondary output. Operating at 60 Hz, this transformer provides reliable low-voltage power for thermostats, relays, contactors, and other HVAC control circuits. Built to Lennox specifications, it ensures dependable performance and proper system operation in compatible heating and cooling equipment.
Lennox 42W93 (LB-74929) is a genuine OEM HVAC control transformer designed to provide stable and reliable low-voltage power for heating and cooling systems. Rated at 70 VA, this transformer converts 208/240 VAC primary input at 60 Hz down to a 24 VAC secondary output, making it ideal for powering thermostats, control boards, relays, contactors, and other low-voltage HVAC control components.
Engineered to Lennox factory specifications, the 42W93 transformer ensures proper voltage regulation and consistent performance, helping protect sensitive control circuits and maintain dependable system operation. It is commonly used in a variety of Lennox residential and light commercial HVAC applications where reliable 24-volt control power is required.
Designed for durability and long service life, this OEM transformer is a direct replacement for compatible Lennox systems and helps restore proper functionality when replacing a failed or weakened control transformer.
Specifications:
Brand: Lennox Catalog Number: 42W93 Model / Part Number: LB-74929 Type: HVAC Control Transformer Power Rating: 70 VA Primary Voltage: 208/240 VAC Secondary Voltage: 24 VAC Frequency: 60 Hz Application: HVAC control circuits, thermostats, relays, contactors
This Lennox 42W93 transformer is an OEM-quality replacement solution for maintaining proper low-voltage power delivery and reliable HVAC system performance.
