eztestpools.comAnswer
Mar 17, 2026 - 05:43 AM
Yes, this flue stack sensor replacement is compatible with ETi 400 heaters. ETi stands for "Energy Transfer Innovation," which is Pentair’s line of high-efficiency pool heaters. Compatibility with the ETi 400 means you can use this sensor to maintain or repair your ETi 400 heater, ensuring continued reliability.
