We had a problem where our central heating was not always working but the hot water was being heated. We called our usual heating engineer and replaced the heating room thermostat but this did not overcome the problem so suspected there may be a fault with the 3 way valve actuator. Called David of House Doctors for a second opinion and after investigating found the fault was with the central heating programmer. On the advice of David we now have a replacement which is much more efficient and provides better control of heating our living area. We also had the boiler serviced and will definitely be using David again.
