As a user I must say that the boilers are designed...

As a user I must say that the boilers are designed to say the least by dogs.
Outdoor boiler that never goes under pressure because I live on a high floor, and I cannot intervene with a throttle because it is not there. Programmer with the lithium battery that has run out and guess what! To replace I have to change the entire mask .. more than 400 euros ... I hope I don't have to spend Christmas in lockdown in the cold