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Most smart thermostats today that are Wi-Fi enabled or have a color touch screen may require constant power through a thermostat C-wire. This ensures your thermostat has a continuous f... Full Description
Most smart thermostats today that are Wi-Fi enabled or have a color touch screen may require constant power through a thermostat C-wire. This ensures your thermostat has a continuous flow of power to function properly. There may be a few smart thermostat models that don’t require a C-wire and can operate with batteries. You should always ensure proper wiring as needed for your HVAC system and corresponding thermostat (with or without a C-wire). Check your HVAC system compatibility to see if you need a C-wire for your smart thermostat.
This common wire kit eliminates the need to run a new wire throughout your home. Installation is easy. Watch the videos below for more info.
For use with the Sensi Touch Smart Thermostat. The Sensi Smart Thermostat doesn’t require a C-wire for most applications.
Does not work with 2-wire systems
If you're wondering what a C-wire is or how to look for one, you’ve come to the right place. Our step-by-step videos will guide you through the process and answer all your questions.
Learn about the basics of common wire installation by watching this video. You will also be guided on how-to and when-to connect C-wires to thermostats. It also shows three different scenarios to choose which methods works best for you.
Sensi Thermostats require a common wire to complete installation. This video will guide you in checking if you have a common wire, or an unused common wire from your previous thermostat that you can use to install your Sensi Thermostat.
If you can not find an unused wire or common wire, you can also use for fan wire or G-wire as a common wire. This video serve as a second option incommon wire installation.
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 a Common Wire Maker Kit is the best solution.
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