Replacing a 3 Channel Controller with Nest

[JHarris]

Is it possible to replace a Horsmann H37XL 3 Channel controller which controls heating, hot water and Towel rails with a Hive Gen 3? 

[JHarris]

Should read Nest Gen 3 not Hive Gen 3!!

[CristianC]

Hi @JHarris. Yes, you can replace it with a Nest Thermostat. The thermostat is dual channel and it will control your heating and hot water ( you won't be able to control your towel rails separately, unless you have a second zone for it with another thermostat ) .