Product Registration

Register your Rinnai product today to take advantage of the industry’s best warranty and ensure you maximize your extended service plan. Plus, you can opt in to receive the latest updates on our products, services, and accessories.

NOTE: A small number of serial numbers are giving an error message "invalid serial number." If you receive this error message after attempting to register your product, please contact the Rinnai Customer Care Team, Monday – Friday 8am – 8pm EST at 1-800-621-9419 and they will help register your product.

If you are a Rinnai PRO Network member, please register products in the PRO Portal.

Step 1 / 3

Your Information

Step 2 / 3

Your Address
Please enter your ZIP code

Step 3 / 3

Product Information
Registration Type
Select install or purchase date
Please select a "Product Type" before adding a serial number. Serial numbers can be found on the side of your unit.


You’ve successfully registered your Rinnai product, ensuring it’s backed by the industry’s leading warranty.

Curious what this means?

Explore Warranties