Google Nest Thermostat: full spec sheet and buying guide

Updated September 29, 2026 · Category: Smart home · Content based on official specifications and public Amazon buyer ratings, not a hands-on test.

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The Google Nest Thermostat is Google's affordable smart thermostat, controlled from the Google Home app on Android or iPhone. At the time of writing it holds a 4.1/5 average from more than 29,641 Amazon ratings.

★ 4.1/5 on Amazon

ENERGY STAR certified, turns itself down when you leave, schedules and remote control in the Google Home app, and Savings Finder suggestions.

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Ratings and prices are as shown on Amazon at the time this article was published and may have changed. Affiliate disclosure.

Saving energy

Google says the Nest Thermostat turns itself down when you leave so you don't heat or cool an empty home. You create an energy-efficient schedule in the Google Home app, and Savings Finder suggests schedule tweaks to save more. Family members can change the temperature from their phone, laptop or tablet.

Compatibility and wiring

It works without a C wire in most homes, but Google notes that some systems, including heating-only, cooling-only, zoned and heat pump systems, need a C wire or a compatible power accessory. Use Google's online Nest Compatibility Checker before buying. It supports 2.4 and 5 GHz Wi-Fi.

Strengths based on its spec sheet

ENERGY STAR certified
Works with Android and iPhone via Google Home
Auto turn-down when you leave
Works without a C wire in many homes

What to consider before buying

Some systems need a C wire or power accessory
Designed around Google Home
No lock feature, per Google

Want to compare this product with other smart home options? Check out our smart home buying guide.

Who is it ideal for?

Google Home users and families who want to control the temperature from any phone.

Who is it NOT the best option for?

If your home runs on Alexa, the Amazon Smart Thermostat is the natural pick; compare them in our smart home buying guide.

Frequently asked questions

Does the Nest Thermostat need a C wire?

Not in most homes, but some systems (heat pumps, zoned, heating-only or cooling-only) need a C wire or power accessory.

Does it work with iPhone?

Yes, through the Google Home app on Android or iPhone.

How do I check compatibility?

Use the Nest Compatibility Checker on Google's support site before buying.

Is the Google Nest Thermostat the right fit for you?

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