A start capacitor like the MARS 11970 stays in the circuit only long enough to bring the motor up to speed before being disconnected

The Carrier LA22LA023 Blower Wheel is a high-performance OEM replacement part designed for precision airflow in residential furnaces and air handlers

providing definitive electrical making or breaking of circuits for boiler pump control

This specific model is an automatic reset pressure switch

Williams 8940 Conversion Kit 320788-703 A start capacitor like theThe Williams 8940 Conversion Kit is a field proven solution for transitioning 22038 series gravity direct vent furnaces from natural gas to liquid propane (LP). As a genuine OEM Williams part, this 22038 conversion kit ensures your 22,000 BTU heating system maintains its rated thermal efficiency and manifold pressure requirements. Precision machined LP burner orifices and a dedicated gas valve regulator spring are included to provide the correct 10"