Discovered HFB during an online search as my boiler was 20+ years old and ready for replacement. Arranged a survey with HFB. The company surveyor arrived on time and carried out an extensive survey and explained the full work scope. He was very friendly answered all of my questions and obviously very experienced. The quote arrived promptly, detailed and to my satisfaction. The installation crew arrived at the stated time and day and were first class, taking great care to ensure carpets were covered with protection sheets. Unfortunately the boiler did not arrive from a third party to one of the HFB team had a 100+ mile round trip to expedite the equipment. The result was an extended installation time of approximately 4 hours. I also had a complex NEST, combined thermostat and control unit. Unfortunately no one seems to be able to programme the unit to my requirements. It has a built in self programming facility which I have been unable to defeat and HFB do not appear to have anyone experienced enough to resolve the issue with the controller. My overall rating would have been very good but for the boiler delivery delay and the failure of HFB installation staff to program the NEST, controller. The boiler fires up when it wants to and has a mind of its own, and I am still experiencing this anomaly four weeks after final installation. Unfortunately there has been no follow up call from HFB administration to ensure customer satisfaction. But all in all I would recommend HFB and use them again.