You let him fit a Ferroli. Obviously the cheapest quote.
You should haver researched more and got a different boiler. .
No a mid range one but should have gone with my first choice a Worcester boiler superb it was based on what we could afford at the time his instalation was first class as we found when they inspected the boiler its just a pity
We went for Ferroli a second rate boiler, they used to good so we are told, but not on the new type of boiler they are going down hill now, still we will replace with a worcester next year.