Pentair ETi 400 Fan Control Board Replacement Kit (475978) NuWhirl Useful when original internals are

Useful when original internals are worn or underperforming

cleaner trim match matters

only a short amount of added reach is needed to route the panel cleanly or avoid a tight connection path

or auxiliary fitting without adding multiple transition parts

A part like this can improve both the seat feel and the visible finish in one straightforward step

Pentair ETi 400 Fan Control Board Replacement Kit (475978) NuWhirl Useful when original internals areSmall components can make a major difference in equipment performance. Pentair ETi 400 Fan Control Board Replacement Kit (475978) replaces a defined wear part, service part, or connection point in the intended assembly. This replacement fan control board supports ETi 400 heater fan operation, helping coordinate airflow control required for proper combustion and heat exchange. It is useful when the existing component shows wear, damage, age related