Pentair ETi 400 Heater Diagram & Part List
Find your parts diagram
Sticker on the pump body (the part with the basket), not on the motor. Motor labels from Century, A.O. Smith or Regal won't match parts.
Label on the side of the tank near the base. Size is in sq ft, e.g. 420 sq ft = C4030 or CCP420.
Rating plate inside the front access panel. Note the BTU and gas type (NG or LP).
Molded into the body or printed on top. Robotic cleaners: on the power supply.
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Pentair ETi 400 Heater Diagram & Part List with Clickable Hotspots for Blowers, Thermistors, Gaskets, and High-Limit Safety Components
Use the interactive diagram above to find compatible Pentair ETi 400 heater parts, then explore the listings below for specifications, online availability, and free shipping.
Ensure accurate temperature readings with the 42001-0053S Thermistor, used across ETi 400, MasterTemp, and Max-E-Therm models.
Seal critical components with the 475615 Heat Exchanger and Chimney Gaskets, designed specifically for Pentair ETi 400 gas heaters.
Prevent water leaks during service with the U178-920P Drain Plug with O-Ring, compatible with ETi 400 and other Pentair models.
Protect your system with the 475998 Thermal Fuse, a key safety component for automatic shutdown in overheating scenarios.
The 42001-0063S High Limit Switch from Swimables helps prevent dangerous temperature spikes in ETi 400 and compatible heaters.
Maintain proper air circulation with the 476000 Blower Assembly, which supports combustion efficiency and reliable heater operation.
All Pentair ETi 400 heater parts—thermistors, gaskets, blowers, and safety switches—are in stock with free shipping and best online pricing.