Had the boiler for 2 weeks now and its great no issues. The Google nest is a great bit of kit. The engineer who came to install it was very polite and got on with it. He kept us up to date with what he was doing. Also the inspector after the install was very nice. I think we were lucky that not more work was needed to be done to install the boiler and maybe the sales man missed a few things like having to drill through our work top etc. But that didn't bother us much because we are getting a new kitchen. If we weren't would have been a different story. Very please with the service, thanks.