Pentair ETi 400 Fan Control Board Replacement Kit (475978) NuWhirl A part like this can

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

The CMP locking gate valve is designed for compatible plumbing applications where a 1-1/2 inch slip by 1-1/2 inch slip shutoff valve is needed

and similar hardware

Useful when original internals are worn or underperforming

Supports proper internal water collection and cartridge alignment

Pentair ETi 400 Fan Control Board Replacement Kit (475978) NuWhirl A part like this canSmall 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