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.
Still not sure? Call (818) 818-6559 and we'll find it for you.
475604 | Pentair Air Orifice For ETI 400 Heaters
Fits these models
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Goes with this part
CA P65 Warning: Cancer and reproductive harm. www.p65warnings.ca.gov
Other parts on the same Pentair ETi 400 Heater
The Pentair 475604 Air Orifice is an OEM replacement part designed for the ETI 400 High-Efficiency Pool and Spa Gas Heater. This component is responsible for regulating the mixture of air and gas to achieve the correct air-to-fuel ratio, ensuring safe and efficient combustion. By maintaining proper combustion balance, it helps preserve heater performance, efficiency, and reliability under varying operating conditions. Constructed from durable materials, the OEM air orifice is built to withstand the continuous demands of heater operation, making it an essential part of routine maintenance and long-term system care.
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OEM Heater Component: The Pentair 475604 air orifice is specifically engineered for ETI 400 High-Efficiency Heaters, ensuring precise fit and seamless compatibility.
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Regulates Air-to-Fuel Ratio: Maintains the correct balance of air and gas during combustion, allowing the heater to perform at peak efficiency.
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Supports Safe Combustion: Plays a critical role in ensuring the heater operates safely by preventing improper combustion conditions.
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Durable OEM Construction: Built from high-quality materials to withstand ongoing use, ensuring dependable performance over the life of the heater.
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Maintains Heating Reliability: Helps protect overall system performance, contributing to consistent water heating and reduced system wear.
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Critical Maintenance Part: Replacing a worn orifice restores heater efficiency and prevents disruptions to safe operation.
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Designed to Pentair Standards: Manufactured to OEM specifications, guaranteeing quality performance and long-lasting durability.
- (1) Air Orifices
- Pentair ETI 400 Heaters
