Key legal question
Whether the cantonal court arbitrarily found the insured's work to be a transformation rather than mere dismantling/removal.
Extracted holding
No. The factual finding was not arbitrary; dismantling and evacuating the tank formed part of the transformation of the heating installation.
Extracted reasoning
The challenge was merely appellatory and unsupported by evidence. In any event, removing the tank from a heating system necessarily changed the system's characteristics.