Lochinvar & A.O. Smith 100208249 Transformer

The Lochinvar & A.O. Smith 100208249 Transformer is a critical HVAC replacement part designed for high-performance residential and commercial heating systems. This heavy-duty 50VA control transformer features a 120V primary to 24V secondary configuration, providing the stable low-voltage power required for integrated boiler control boards, gas valves, and ignition modules. Engineered as a direct OEM alternative, the 100208249 is 100% identical to part numbers TRF2002 and TRF2002K, ensuring a drop-in fit without the need for field modifications. It is commonly utilized in Lochinvar models such as the CHL, CHN, and CWN series, as well as A.O. Smith EnergyRite units. This 24V step-down transformer is built with robust internal windings to handle the inductive inrush currents typically found in gas water heater and boiler maintenance, maintaining voltage stability across the secondary circuit to prevent control logic resets or component failure.

Key Benefits

• Direct OEM Compatibility: Verified replacement for 100208249, TRF2002, and TRF2002K, simplifying inventory for contractors.
• Broad Application Range: Specifically designed for Lochinvar boiler parts and A.O. Smith heating systems, supporting models like the CWN500PM and CHL0502.
• Reliable Power Output: Provides a consistent 50VA rating to support modern microprocessor-controlled HVAC systems.
• Optimized for Technicians: Standardized mounting and wire lead configuration reduce downtime during emergency service calls.

Common Questions

Is the 100208249 interchangeable with the TRF2002?
Yes, the 100208249 is the current manufacturer part number and is functionally identical to the TRF2002 and TRF2002K versions used in older equipment.

What happens if my system pulls more than 50VA?
This transformer is rated for a maximum 50VA load. Exceeding this capacity can lead to overheating and premature failure. Always verify the total amperage draw of all connected 24V components before installation.

Can this be used on 208V or 240V primary systems?
No, this specific model is a 120V primary transformer. Applying higher primary voltage will damage the internal windings and potentially the connected 24V control circuit.

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.