Do I need to replace the run capacitor

it can disrupt the pressure switch circuit

This OEM replacement air pressure switch is a critical safety component designed to verify proper inducer motor operation and flue venting before allowing the ignition sequence to proceed

depending on the specific production series of the HD56AK651

Simple Mounting: Compact footprint facilitates quick panel mount pneumatic switch installation for contractors in the field

Supco FC4031 Fan Center 320720-756 Do I need to replaceThe Supco FC4031 is a versatile 40VA universal fan center designed to provide reliable low voltage control for line voltage fan motors and auxiliary circuits in HVAC R systems. As a primary direct replacement for 4031FC, this unit integrates a DPDT plug style relay (90340) and a high efficiency 40VA transformer. Engineered for field flexibility, it features multi tap primary voltages of 120VAC, 208VAC, and 240VAC to accommodate diverse power