I have a Thorn EMI Appollo boiler with a wall mounted room thermostat in an area that is kept warm by a wood burner in an adjacent room. Consequently the heating system does not kick in in the mornings due to a warm area downstairs, rooms upstairs remaining cold. Can I get a wireless stat to suit my boiler that can be fitted upstairs in a cooler area to enable the boiler to fire up even if it's warmer downstairs?