York S1-025-49713-000 Transformer

The York S1-025-49713-000 is an OEM heavy-duty 75VA 24V control transformer engineered for multi-tap primary applications in professional HVACR systems. This component effectively steps down 208/240v to 24v, providing stable low-voltage power for contactors, control boards, and thermostats in York, Luxaire, and Coleman equipment. As the direct replacement for S1-025-25973-700, it maintains the precise electrical characteristics and mounting footprint required for immediate field installation. The increased 75VA rating provides more amperage headroom than standard 40VA units, making it a rugged HVAC class 2 transformer for circuits with high inductive loads. When diagnosing control circuit failures or voltage drops, utilizing this York HVAC transformer replacement ensures the secondary loop maintains the necessary current to prevent contactor chatter and processor resets. Integrating this unit into your service call ensures the system operates within OEM specifications for long-term reliability in the field.

Key Benefits for Technicians

• Enhanced Power Rating: 75VA capacity allows for more accessories and relays on the 24V circuit compared to standard 40VA transformers.
• Multi-Tap Primary: Supports both 208V and 240V incoming power configurations for versatile application across different job sites.
• Standardized Footprint: Designed for a direct physical match to the original York S1-025-25973-700, facilitating a faster swap-out.
• Reliable Isolation: High-quality windings provide clean power to sensitive microprocessors and solid-state controls.

Common Technical Questions

What is the primary replacement for York S1-025-25973-700?
The York S1-025-49713-000 is the current factory-authorized replacement, superseded from the original S1-025-25973-700 part number.

What are the S1-025-49713-000 voltage ratings?
This transformer is designed for a primary input of 208/240VAC and a secondary output of 24VAC, with a total power rating of 75VA.

How do I wire the S1-025-49713-000 for a 208V system?
Ensure you identify the correct primary tap for 208V (typically the labeled lead) and cap off the unused 240V lead to prevent short circuits and ensure proper secondary voltage output.

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.