I copy here a part of the review made to the insta...

I copy here a part of the review made to the installer of the newly installed Baltur condensing boiler:
"They say they give you the warranty extension, but in reality if you don't do the maintenance right away they don't even make the mandatory one for the first 2 years"
After hearing the Baltur customer service, he confirmed that this is so, despite the mandatory warranty for the first 24 months and also against the regional regulations that provide for the absence of checks for the first 4 years (on new installations), and then checks with smoke checks every other year.
I believe that the national and / or regional rules must apply, not the ones that the manufacturers manage themselves with their authorized maintainers, for their common good and certainly not for that of the end customer.