Thanks. Ok so we need to remove the existing one before using a wireless one? We can't use two different thermostats, is that right? Just want to be sure.
Our house has the main central heating thermostat in the sitting room. We have just had a log burner installed in that room meaning it heats up very quickly. However this also means that the thermostat reaches temperature before the rest of the house is heated, leaving the upstairs cold...