Learning thermostat · Google Nest

Google Nest Thermostat 3rd Gen Learning Thermostat

Learning thermostat

At a glance

A fit for phone control and scheduling.

Strong points
Works with Google Assistant, Amazon Alexa.
Weak points
C-wire need not stated.
Best match
Phone control and scheduling.
Works with
Google Assistant, Amazon Alexa, nest
Connectivity
Wi-Fi
Display
Digital
Power
Hardwired
Voltage
24 V
Material
Metal
Prices change often; the button shows today's price.

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Updated October 2026

Will it work with your system?

Works well with

  • Phone control and scheduling
  • Systems the maker's checker confirms

Check first if you have

  • Line-voltage baseboard heat
  • Millivolt gas heaters

What it controls

The Google Nest Thermostat 3rd Gen Learning Thermostat is a learning thermostat. Its listing doesn't spell out which heating and cooling systems it supports, so run the maker's compatibility checker before you buy.

Power is where installs stall: the listing doesn't say whether it needs a C wire. C-wire options.

The listing doesn't state heat pump support; if you have an O/B wire, confirm with the maker before ordering. Heat pump wiring.

Connectivity: Wi-Fi. It google Assistant, Amazon Alexa, nest.

Tick your terminals in the wiring checker to see whether its maker's statements cover your system.

Also on the listing: dimensions of 3.3 in (D) x 3.3 in (W) x 1.1 in (H), a weight of 1.6 lb and a digital.

Compatibility and specs

These come from the maker's listing for this exact model; the source of each is marked. Anything the maker leaves out is marked not stated.

Model numberThermostat 3rd GenRetailer
Model nameThermostat - 3rd GenRetailer
Dimensions (seller)3.3"D x 3.3"W x 1.1"HRetailer
Works withGoogle Assistant, Amazon Alexa, nestRetailer
Features (seller)Wireless: Working Wi-Fi connection: 802.11b/g/n @ 2.4GHz, 5GHz, Wireless interconnect: 802.15.4 @ 2.4GHz, Bluetooth Low Energy (BLE)Retailer
ConnectivityWi-FiRetailer
PowerHardwiredRetailer
Voltage24 VRetailer
DisplayDigitalRetailer
Mounting / installationWall MountRetailer
MaterialMetalRetailer
Product weight1.6 lbRetailer

Strong points and weak points

Strong points

  • Works with Google Assistant, Amazon Alexa

Weak points

  • C-wire need not stated
  • Needs Wi-Fi for smart features

Wiring and install notes

  • Compatibility statements are the maker's own. Confirm with the maker's compatibility checker, turn the power off before wiring, and leave line-voltage and furnace work to a licensed electrician or HVAC technician.

Thermostats to compare it with

FAQ

Does the Google Nest Thermostat 3rd Gen Learning Thermostat need a C wire?
The listing doesn't say whether it needs a c wire.
Does the Google Nest Thermostat 3rd Gen Learning Thermostat work with a heat pump?
The listing doesn't say; check the maker's compatibility checker.

Other smart thermostats with similar wiring

All smart thermostats in one grid · Every Google Nest control listed

Our take

A fit for phone control and scheduling.

Where to get it

The link goes to this exact model's listing. Check that the box includes the trim plate or C-wire adapter you need, and confirm your wiring with the maker's compatibility checker before you order.

Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure