Where do wires go on Nest?

Common wires should go in your Nest thermostats C connector. Because the common wire is used to provide consistent power to the thermostat, its important to determine what function a wire labeled B serves before connecting it to a Nest thermostat.

How do I connect the wires to my Nest Thermostat?

2:556:09How to install the Google Nest Learning Thermostat - YouTubeYouTubeStart of suggested clipEnd of suggested clipSimply hold down the connector button and push the wire all the way.MoreSimply hold down the connector button and push the wire all the way.

How many wires does Nest Thermostat need?

2 wire The Nest Thermostat is compatible with 2 wire low voltage HVAC systems that are either heat only systems or cooling only systems.

Does Nest Thermostat work with 4 wires?

For instance, the Nest Thermostat and the Nest E Thermostat can usually run without a common wire — see below for more information. Other thermostats, like the Ecobee, come with an adapter that can be used if you already have four wires, but no common wire — Ecobee thermostats are also discussed below.

How do I connect the 4 wires to my Nest thermostat?

3:4711:37Nest Wiring Diagram 4 Wires - YouTubeYouTube

What do the colored wires on my thermostat mean?

Blue or Black – C – Common wire, may be unused by your existing thermostat. Enables continuous power flow from the Red wire. Red – Rc – 24VAC (dedicated to cooling call) Green – G – Fan. White – W – Heat.