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Warranty Information

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NAVIEN Limited Warranty

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Warranty Period

Navien products come with a limited warranty covering labor, parts and the heat exchanger. The following warranty periods begin to run from the date of original installation. The date of original installation must be provided to Navien, and upon request, proof of the original installation date must also be provided to Navien.

When the product is installed in a new construction, the commencement date shall be dated upon which the end-user takes title to the property.

Applicable Warranty Periods

Product Labor Warranty Parts Warranty Heat Exchanger Warranty
NPE Series Water Heater
(Residential)
Standard or Cont.-Recirc.2 1 year 5 years 15 years
Uncont.-Recirc.3 1 year 3 years 5 years
NPE Series Water Heater
(commercial or Combi1)
Standard or Cont.-Recirc.2
for units produced on or after january 1, 2016
1 year 5 years 8 years
Standard or Cont.-Recirc.2
for units produced before january 1, 2016
1 year 3 years 10 years
Uncont.-Recirc.3 1 year 3 years 3 years

1Combi refers to a combination potable water and space heating application. Water heaters cannot be used in space heating only applications.

2Controlled-Recirculation : Recirculation the water heater is controlled by either the water heater or an external aquastat.

3Uncontrolled-Recirculation : External pumps configured to circulate continuously through the water heater are subject to the uncontrolled recirculation warranty terms. An aquastat is the minimum pump control requirement for DHW or storage tank recirculation in order to maintain the full controlled warranty.

Warranty Claim Procedures

To obtain warranty repair service, the end user or homeower must contact the original installer of your Navien product. If the original installer cannot be identified, the end user or homeowner may contact Navien's Technical Administration Department at (800) 519-8794. Proof of purchase is required to obtain warranty service.

Warranty Service

At its option, Navien will replace the defective component part(s) or product, in accordance with the terms of this Limited Warranty, if it fails in normal use and service during the Applicable Warranty Period identified below. The replacement component part(s) must be Navien original factory component part(s). The replacement component part(s) will be warranted only for the unexpired portion of the original component part's Applicable Warranty Period. Payment for labor in completing the warranty service is subject to Navien's prior written approval and shall be subject to Navien's schedule of approved labor allowances.

Parts Warranty (excluding Heat Exchanger)

The Applicable Warranty Period for a CH series Part(s) failure installed in a Residential application is Five (5) years from the Effective Date.

Warranty Exclusions

Navien's Limited Warranty shall be void in the event of an occurrence of any of the following :

  • Product purchased through the internet, other e-commerce channels, or any installer that obtained the Product from a supplier or distributor not authorized by Navien.
  • Improper installation, failure to install in strict compliance with the Installation Manual procedures, installed by a non-licensed installer, and installation in violation of applicable rules, laws or building codes.
  • Failure to perform regular maintenance, misuse, operation at settings other than those recommended or specified, non-compliance with instructions or guidelines set forth in the User's Operation Manual.
  • Modification or alteration of the Product in any manner, including but not limited to, removal of any component or part, addition of any non-approved components, relocating or moving the Product from its original installation site, or any accidental or intentional damage to the Product.
  • Installation for non-recommended uses.
  • Any damage caused by local adverse conditions including but not limited to hard water deposits, lime or mineral build-up, operating in corrosive atmospheric elements.
  • Damage or problems caused by gas flow issues, electrical surges, flooding, fire, abnormal external temperature, and any other cause of damage not directly caused by a manufacturing defect.
  • Installer's failure to fully comply with the Warranty Service and Return Policy procedures previously provided to Installer and as is available on Navien's website. Such policies include but are not limited to the Installer's failure to first contact Navien
  • Tech Support while in front of the product for purposes of trouble shooting the identified problem or issue.
  • Use of the NPE Series Water Heater for space heating only purposes shall void the warranty.
  • Performance problems caused by improper sizing of the water heater, the gas supply line, the venting connection, combustion air openings, electric service voltage, wiring, fusing or any other components, parts or specifications.
  • Improper conversion from natural gas to LP gas or LP gas to natural gas or attempt to operate with a type of gas not specified for the water heater.
  • Any damage, malfunction or failure caused by abuse, negligence, alteration, accident, fire, flood, freezing, wind, lightning and other acts of God.
  • Operating, using or storing the water heater in a corrosive or contaminated atmosphere or environment.
  • Operating the water heater at water temperatures outside the factory calibrated temperature limits and/or exceeding the maximum setting of the high limit control.
  • Operating the water heater when it is not supplied with potable water at all times.
  • Subjecting the heat exchanger to pressures or firing rates greater or lesser than those shown on the rating plate.
  • Installation at any location outside the United States and Canada.
  • Removal or alteration of the rating plate.

Other Terms

This Limited Warranty is subject further to the terms and conditions set forth herein and as may be further specified in the Terms and Conditions page located on Navien's website at WITH THE EXCEPTION OF THIS LIMITED WARRANTY, NAVIEN DISCLAIMS ANY OBLIGATION OR LIABILITY WITH RESPECT TO THE PRODUCTS OR THEIR SALE AND USE, AND NAVIEN NEITHER ASSUMES NOR AUTHORIZES THE ASSUMPTION OF, ANY OBLIGATION OR LIABILITY IN CONNECTION WITH THE PRODUCTS. THIS DISCLAIMER INCLUDES ANY OTHER WARRANTIES, EXPRESS, IMPLIED OR STATUTORY RESPECTING THE PRODUCTS OR ANY PARTS OR COMPONENTS THEREOF, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Navien's total liability for any claim arising hereunder shall not exceed the purchase price which you paid for the Product. NAVIEN SHALL NOT IN ANY EVENT BE LIABLE FOR INDIRECT, SPECIAL, CONSEQUENTIAL OR LIQUIDATED DAMAGES OR PENALTIES, INCLUDING CLAIMS FOR LOST REVENUE, PROFITS OR BUSINESS OPPORTUNITIES, EVEN IF NAVIEN HAD OR SHOULD HAVE HAD ANY KNOWLEDGE, ACTUAL OR CONSTRUCTIVE, OF THE POSSIBILITY OF SUCH DAMAGES.

Warranty Service & Return Policy

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