which is standard for many Carrier blower wheel configurations

The "HG" series is specifically valued by technicians for its adjustable start and span

The interface module works in conjunction with the main integrated furnace control to ensure the inducer motor reaches the required RPM before allowing the ignition sequence to proceed

Class RK5 fuses like the S1-FRSR15 provide superior current-limiting features

Lochinvar & A.O. Smith 100274734 Flue Sensor 324846-701 which is standard for manyThe Lochinvar & A. O. Smith 100274734 Flue Sensor is a critical safety component designed for high efficiency condensing boilers and water heaters. This exhaust temperature sensor monitors the heat levels within the venting system to prevent heat exchanger damage and plastic vent meltdown. Also identified by part number TST2013, this NTC thermistor provides the control board with precise resistance readings, ensuring the unit modulates or shuts down