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June 06, 2018

Problem Solved: Gandy Installations Saves Customer Enough Space for a Refrigerator

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May 17, 2018

Problem Solved: Steve Hosack of SC Hosack Plumbing Upgrades His Hair Stylist to Navien

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November 18, 2017

Ways to save money on your water & electric bill

Use our NPE sizing calculator

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Product Registration

Online Product Registration

Navien uses the information from our web site to measure statistics such as: number of visits, pages visited, and information requested.
Navien will never send unsolicited e-mail or share the e-mail or url address with other companies.

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See Privacy Policy about collection and usage of your Personal Information.

Product Information

* Unit quantity:

* Cascade:

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* Serial Number:

* Replacement:

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Product Serial number is 15-16 digits and can be found either on the right side of the box or the back of the front cover.

Navien, Inc. Technical Customer Service Department

Training Information

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