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Installers & partners

Fronius Warranty

No matter what the future may bring, with a Fronius product, owners of PV systems are ideally equipped for the requirements of tomorrow. That is our promise to you and your customers. A Fronius warranty is backed by a solid family-run business with over 30 years of experience in the solar sector, as well as the uniquely high quality of our Fronius Support team.

Fronius products come with a two-year warranty ex works. With a simple online product registration in Fronius Solar.web, this can be extended for up to 10 years, free of charge.  

Register your inverter in Fronius Solar.web to enjoy the following benefits:

  • Warranty coverage of up to 10 years for registered products
  • Free overview of current PV system performance data in Fronius Solar.web
  • Regular information on new functions, accessories, compatible storage units, and home automation solutions

* Warranty conditions may differ depending on the country and region. Fronius accessories are excluded from product registration. For further requirements or limitations of the warranty, please refer to the warranty conditions for your country

Terms of Warranties

Product registration in Fronius Solar.web

Following a quick and free registration process at, owners of a Fronius product can select an attractive warranty model, depending on their region, that perfectly matches their individual requirements.

The free product registration couldn’t be easier for owners of pv systems:

  • Open the following page:
  • Don't have a Solar.web account yet? Click “Login” then “Register now” to create a new Solar.web account
  • Fill in the required fields and follow the subsequent steps to complete account setup.
  • Already have an account? Log in to your Solar.web account
  • Open the “Product registration” menu item
  • Enter your serial number
  • Choose the installation date, your country and the relevant installer
  • Select the desired warranty model
  • The warranty certificate will then be available for download.  

If you still have questions or are unsure of anything, you can find more detailed information on the registration process in our instructions or simply by watching our registration video.

1 Registration = Up to 10 years warranty

Fronius customers receive Fronius inverters as standard with a warranty period of two years ex works. After registering the Fronius inverter in Fronius Solar.web, system owners can opt for one of our attractive warranty models, free of charge.* The following options are available:

Warranty Model for Inverters up to 12.5 kW


2-year Fronius Warranty Plus +

3-year Fronius Warranty Plus and 5-year Fronius Warranty upon registration


Warranty Model for Inverters from 13 kW  

Model 1:

2-year Fronius Warranty Plus +

3-year Fronius Warranty Plus upon registration  


Model 2:

2-year Fronius Warranty Plus +

5-year Fronius Warranty upon registration


A Brief Outline of Our Warranty Models

Fronius Warranty

The Fronius Warranty offers warranty protection for the material over the entire service life.

Fronius Warranty Plus

The Fronius Warranty Plus covers the material, servicing, and transport costs.

Essential: The latest software version

The inverter software must be regularly updated in order to ensure smooth operation of the photovoltaic system.

Ongoing inverter software updates not only guarantee a low failure rate and better serviceability of the device, they also ensure optimal system performance.

Two Options for Regularly Updating Inverter Software

  • Bringing the PV system online in Fronius Solar.web**: With this option, an inverter update can be started online. Fronius reserves the right to carry out updates automatically.
  • Manual checking and, if necessary, update of the inverter software every 3 months

Purchase warranty extensions for even greater protection

Reliability, a long service life and sustainability play a crucial role for PV system owners, just like they do for Fronius.

This is why we are offering you the option to extend the warranty for up to 20 years. System owners thereby benefit from the uniquely high-quality service of our Fronius Support team reliably and in the long term.  

Fronius warranty extension 

The Fronius Warranty Extension is a cost-effective way to protect system owners against risks. If a claim is made, Fronius will provide the relevant materials, and the warranty holder does not have to pay for the spare part.

Fronius warranty extension plus 

The Fronius Warranty Extension Plus provides you with comprehensive cover. If a claim is made, in addition to the material costs, Fronius also covers labor costs for removing and installing the spare part, as well as any transportation costs.  


* Warranty conditions and services may vary depending on the country and region. Fronius accessories are excluded from product registration. The prerequisite for free warranty extension is registration of a new Fronius inverter, which was commissioned after 09/01/2023, in Fronius Solar.web. For further requirements or limitations of the warranty, please refer to the warranty conditions for your country.

 ** The prerequisite for this is the maintenance and provision of an Internet connection.  

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