Nest Thermostat E Installation Without C Wire

If that s the case you can install one pay to have one installed or simply grab.

Nest thermostat e installation without c wire.

The nest learning 2 nd generation also claims to be able to work without a c wire as it borrows the power from the d and g wire. The sensi wi fi smart programmable thermostat 1f86u 42wf works very well without a c wire. The nest app won t tell you to connect one do not connect a c wire to your nest thermostat unless the nest app tells you to. Custom wiring diagram that you will need to install your nest thermostat.

You don t need a c wire take your fan wire and wire it to c on the nest then move fan from the furnace controll. The nest thermostat e works with most 24v systems including forced air variable speed heat pump and radiant systems as well as. If you re going from an older thermostat to a new smart one you may find that your system is without a c wire. If your current thermostat doesn t have a wire in the c terminal.

For instance the nest thermostat and the nest e thermostat can usually run without a common wire see below for more information. Remove any jumper wires. Use the compatibility checker. Begin installation with the app the nest app s step by step instructions make it easy to install and wire your thermostat so use it as your main guide.

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. If your current thermostat has a wire in the c terminal. I m going to install the nest e thermostat but want to add a third wire to serve as a c wire. I have an older boiler system with two wires running from the aquastat to the old thermostat.

If you do not have a c wire don t worry. How to tell if you have a c wire. You can print it or email it to yourself. The wiring diagram that you ll get from the nest app will tell you to connect the c wire to your nest thermostat.

These illustrations use the 3rd gen nest learning thermostat but the steps are the same for the nest thermostat e.