Wishing to use a local tradesman to replace our combi boiler GS Heating stood out as being the most professional and caring. Ben gave us sound advice clearly explaining the various options and presented us with a keen detailed price. Unfortunately on the day of the installation I was not available and neither was my wife for most of the day so we happily left Ben to carry on and lock up when finished. The workmanship is first class, Ben left the house in a clean and secure state.