Sensi | Unused wire as a common wire
Often times, there is an extra, unused wire in the wire bundle running from the thermostat to the furnace that can be used.
In Sensi Smart Thermostats
Sensi | Recycling old thermostat
A how-to guide to recycling your old thermostat after you install your new Sensi™ thermostat.
Sensi Touch | Connect wires
A how-to guide to connecting the wires to your Sensi™ Touch smart thermostat.
Sensi | Wire Picker
A how-to guide to using the wire picker to help install your Sensi thermostat.
Sensi | Turn off power
A how-to guide to turning off power to your heating and cooling equipment before you install your new Sensi thermostats.
Sensi | Install Common Wire Kit
If there is not an extra unused wire running from the thermostat to the furnace, and using the g-wire as a common wire is not an option, in most cases, installing an Emerson Thermostat Common Wire kit is the best solution.
Sensi | Remove old thermostat
A how-to guide to removing your old thermostat before you install your new Sensi thermostat.