Best C Wire Transformer

In this video blog post we cover the Best C Wire Transformer that we have tested and know works with the Nest Thermostat. This C wire Transformer will work with both the Nest Thermostat Generation 3 and the Nest Gen E Smart Thermostat.

Best C Wire Transformer Fyve 24V Transformer

We’ve tested dozens of different transformers to power the Nest Thermostat and found that the 24V C wire transformer from Fyve was the Best C Wire transformer that worked with the Nest Thermostat. In our video blog post below we show you how you can install a C wire transformer.

If you want to look at other options for installing a C wire we have a complete Nest Thermostat C wire installation wire guide in another post that teaches you other more advanced options for connecting a C Wire.

Related Post: How to install a common wire the advanced guide

The vast majority of Nest Thermostat installations don’t require a C wire transformer so we recommend that you first connect your Nest Thermostat to your HVAC system and test it to see if it will work without a C wire.

If you find that you need a C wire or C wire transformer you can either go through the steps we list here or just use the simple solution of adding a C wire transformer.

Recommended Best C Wire Transformer: Approved and Tested By One Hour Smart Home