Slider PLENTICORE Aufkleber
KOSTAL warranty
Slider PLENTICORE Aufkleber

The KOSTAL warranty for more peace of mind

Extend the warranty period for your inverter and wallbox free of charge. Activate your device on our online KOSTAL Solar shop.


Smart Warranty

The Smart Warranty extends the warranty period of KOSTAL inverters and wallboxes free of charge. All that is required is a one-time activation on our online KOSTAL Solar shop. Activation is simple and can be completed within the first 6 months after purchase. 

It is that simple:

Step 1: Log in to the online KOSTAL Solar Webshop
Step 2: Enter system and location data
Step 3: Activate warranty

Done! You will receive the warranty certificate immediately by e-mail.

Smart Warranty plus

KOSTAL Solar Electric is extending its warranty to 10 years for all inverters up to 20 kW with a commissioning date of 1 April 2022.

With the Smart Warranty plus, you also receive a material warranty from the sixth year of operation. This means that, including the statutory warranty, the new Smart Warranty plus provides a total warranty period of 10 years.

Important: In order to benefit from Smart Warranty plus, you will also need to register on the KOSTAL Solar Portal.

KOSTAL warranty extension

For our customers who would like to have their inverters protected for even longer, the KOSTAL warranty extension offers an additional extension option. Within the first two years, the warranty period can be extended by a further 5 years from the date of purchase.

The warranty extension can be ordered conveniently via the KOSTAL Solar Webshop - easily and quickly, around the clock and even at weekends. You will receive the warranty certificate just as quickly and easily by e-mail. To be able to order the KOSTAL warranty extension, the Smart Warranty must be activated in the KOSTAL Solar Webshop for the respective inverter.
 
 

PV planning with KOSTAL

Find your nearest KOSTAL specialist partner now

Find an installer now

Retrofitting a PV system - with repowering for more efficiency

Perform a retrofit check now

Perfect solar and storage solutions for your PV system

To the product overview