It depends on the type of product.
Products that involve electrical, hydraulic, gas connections, or technical systems must be installed by a certified installer. These include (but are not limited to), for guidance:
Air conditioning and climate control
Boilers and heating systems
Water heaters and storage water heaters
Ventilation systems
Industrial or professional use equipment
Products requiring mandatory technical commissioning
In these cases, installation by uncertified personnel implies the automatic waiver of the warranty, since safe and regulation-compliant assembly cannot be guaranteed.
Products without technical risk (accessories, small appliances, plug & play, etc.) can be installed by the customer by following the included instructions.
For any questions about whether a product requires professional installation, check the product sheet or contact our customer service team before proceeding with the installation.