While most heating systems are high voltage usually 230v usually they only use a little bit of current at a time up to 3a.
Nest not compatible with high voltage.
There are two main reasons that a heating system may not be compatible with nest thermostat.
High voltage thermostats are usually labeled 110 115 120 or 240 vac note.
You might have a line voltage 120v system if your wires are thick and either 2 or 4 in quantity probably just two or four red and black or red and white in color you operate your heater s on a room by room basis.
It s high current or a proprietary system.
High voltage thermostats should only be installed or uninstalled by a professional due to the high voltage that they.
In some cases it is possible to make a high voltage system nest compatible.
The 2018 nest learning thermostat 3rd generation is not only compatible with high voltage systems but it works as your best friend who is an agoraphobe and never leaves the house.