Isolated Coil Design: The isolated coil and case prevent grounding issues and electrical noise in sensitive control circuits

Certified lead-free bronze body construction ensures compliance with national low-lead regulations for potable water systems

The York S1-025-41274-000 Temperature Sensor is a high-precision thermistor designed for critical thermal monitoring within commercial and industrial HVAC systems

Efficient Wiring: Includes a wiring diagram and QC-6 kit to easily convert from screw-on to push-on terminal connections

confirming precise OEM replacement compatibility for contractors servicing Lennox and Allied units

Nordyne 620825R Transformer Isolated Coil Design: The isolatedWhen you're out in the field and find a dead control circuit, the Nordyne 620825R Transformer is the reliable official OEM replacement you need to get the system back online. This 115v to 24v HVAC transformer is a critical component for stepping down line voltage to power 24V thermostats, gas valves, and integrated furnace control boards. Rated at 20VA, it provides the necessary current for standard residential applications. The 620825R is the direct