Does this require a C Wire ??? null

No, It charges while the appliance (furnace, air conditioner) is running. If you have a slow summer, you can pull it off the wall and charge it manually. The C Wire just supplies energy when not used for a long time.

It is best to have a C-wire to recharge the Nest internal battery, but for some systems, the Nest will "borrow" a little power from the other wires. It worked for me, but YMMV since there are many many different HVAC systems. There may be a work-around wiring that Google may suggest. It's best to use their online compatibility took or call them. Even after all that, you will need to just try it out; you may get lucky.

The Nest Learning Thermostat is engineered to use very little power: So, even though Nest thermostats have sensors, displays, and more, they typically don't need a C wire to stay charged up. It uses the voltage from your system’s wires to keep its internal battery charged. However, if it's not getting enough power from your system, you will be needing to install C wire to have it's own source of power.

“Does this require a C Wire ???”

Asked by TheAndreotti 5 years ago

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No, It charges while the appliance (furnace, air conditioner) is running. If you have a slow summer, you can pull it off the wall and charge it manually. The C Wire just supplies energy when not used for a long time.
Answered by HenryP 5 years ago
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It is best to have a C-wire to recharge the Nest internal battery, but for some systems, the Nest will "borrow" a little power from the other wires. It worked for me, but YMMV since there are many many different HVAC systems. There may be a work-around wiring that Google may suggest. It's best to use their online compatibility took or call them. Even after all that, you will need to just try it out; you may get lucky.
Answered by ChromebookFan 4 years ago
Sorry, there was a problem. Please try again later.
The Nest Learning Thermostat is engineered to use very little power: So, even though Nest thermostats have sensors, displays, and more, they typically don't need a C wire to stay charged up. It uses the voltage from your system’s wires to keep its internal battery charged. However, if it's not getting enough power from your system, you will be needing to install C wire to have it's own source of power.
Answered by Nest Support 5 years ago
Sorry, there was a problem. Please try again later.