KOSTAL Smart Warranty - free warranty activation for KOSTAL inverter

By registering your KOSTAL inverter, your 5 year warranty will be activated. This can only be done during the first 6 months after the purchase
and requires a one-time creation of a user account in our Webshop.

5 steps to receiving KOSTAL Smart Warranty – it’s simple:

Step 1: Log in to your user account
Step 2: Select KOSTAL Smart Warranty
Step 3: Enter date of initial operation, serial number, system data and system location
Step 4: Confirm registration data
Step 5: The warranty certificate will be sent to you immediately by e-mail (for installers, in order to forward to their customers)

More information