Pentair ETi 400 Fan Control Board Replacement Kit (475978) NuWhirl or auxiliary fitting without adding

or auxiliary fitting without adding multiple transition parts

and similar hardware

cleaner trim match matters

damaged around the ports

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 or auxiliary fitting without addingSmall 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