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The Navien 30014451A is a circulation pump air vent designed for use with Navien tankless water heaters. This product enables efficient air removal in hydronic heating systems to maintain optimal performance.
This air vent is essential for the effective operation of circulation pumps in heating applications.
This was the exact replacement for the air vent that was leaking. Replacement is very easy and saved what would have been an expensive call to the plumber. This was on a tankless water heater that ws installed in 2017 that was out of warranty. A note however, is that when the vent fails, the leak is significant enough that it can create a water water issue. As with a conventional water heater, a drain pan needs to be installed underneath the unit when installed. Unfortunately, the installer didn't mention that when it was installed.
Voomi is a good source for Navien parts and has good pricing.
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