Will a Nest thermostat work with 2 wires?
Looking at the photo you share, it looks like you have a 2 cable heating system. It is not really necessary to connect the green cable, since it is also not connected to your old thermostat. Here it seems you should install your existing cables in your nest thermostat.
Will a Nest thermostat work without Internet?
Original answer Can the NEST thermostat work without Internet service or WiFi? No. If the Internet is not present for some time, the Nest claims lack of connection. It will continue to work according to the calendar, but no other change can be made that perhaps the point of setting the current temperature.
Does Nest thermostat e need C wire?
The E thermostat is designed to work even if your home does not have a common wire (C), but the installation of a new C cable may be necessary. If you have a dual-fuel system, we strongly recommend a professional installation.
Do I need two Nest thermostats?
The short answer to the above questions is yes. Nest thermostats can certainly be used in conjunction with HVAC zoned systems. However, you will actually need several nest thermostats throughout the house.
Can Nest thermostat work with two wires?
Looking at the shared photo, it looks like you have a 2 wire heating system. Actually, you don't need to connect the green ya wire because you're not connected to the old thermostat. Here's how to install existing wires in the sand thermostat.
Will a Nest thermostat work with a boiler?
Like most modern smart thermostats, Nest will work with almost all condensation and combi boilers. It is also compatible with the system and heat boilers only, as well as air sources and heat pumps from the source to the ground.