On Saturday, April 14, 2018 at 5:35:15 AM UTC+1, wrote:

I think all boilers are makes to avoid bar Vaillant & WB, simply on grounds of reliability.

You see plenty of "they don't make 'em like they use to" comments on both those brands. WB sell a lot of boilers but it does seem that if you get a bad one it can be a right pain with recurring faults.

Boiler fitters like WB as in the event of a problem during installation their support is excellent.