Had an Ideal boiler installed just less than 2 years ago along with the fancy Halo thermostat, which we were told is the law these days. The boiler has been absolutely fine. However the thermostat has started having control issues with the manual setting knob. On contacting Ideal I was told the 2 year warranty on the thermostat is only valid if the boiler had been regularly serviced ! Everybody knows that modern boilers do not need a yearly service, but apparently that affects the thermostat !!! Couldn't make it up !