This was a great installation and it was exhilarating to see David and his colleague really determined to get everything working well and very neatly done in spite of the horrendous difficulties re-routing and sizing the mains gas to the new boiler. and having to heave out my 26 year old boiler They did not leave until everything was completed and working to my satisfaction, explaining the brilliant wi-fi control and leaving everything neat and tidy. They hardly stopped for a break and worked in a cramped space. Worth every penny as they say. I would highly recommend them to anyone needing to have similar work done and wanting a really neat finish.