https://www.googlenestcommunity.com/t5/Nest-Thermostats/Compatibility/m-p/70362#M15851 <P>I have a valiant 415 system boiler potterton controls my thermostat has 4 wires red yellow blue and earth is my system compatible for a nest smart thermostat thanks</P> Sun, 26 Dec 2021 13:24:29 GMT Bill6996 2021-12-26T13:24:29Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/Compatibility/m-p/70362#M15851 <P>I have a valiant 415 system boiler potterton controls my thermostat has 4 wires red yellow blue and earth is my system compatible for a nest smart thermostat thanks</P> Sun, 26 Dec 2021 13:24:29 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Compatibility/m-p/70362#M15851 Bill6996 2021-12-26T13:24:29Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/Compatibility/m-p/70411#M15861 <P>Any boiler will work, it's who installs the wiring is the question.</P><P>You have standard wiring for a thermostat, which doesn't mean anything really.</P><P>Simple answer, yes it will work.</P> Sun, 26 Dec 2021 15:19:24 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Compatibility/m-p/70411#M15861 Frustratedddd 2021-12-26T15:19:24Z