Google Nest Is Cutting Off Access for Early-Gen Nest Thermostats: Here’s When

Is your Google Nest thermostat several years old or even older? Nest has announced that the early generations of its Nest Learning Thermostats will lose key support this year, effectively turning the smart thermostats into dumb devices unless you upgrade.

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On Oct. 25, 2025, Google Nest is automatically removing app support for three models:

That’s a bigger loss than it may look like at first glance: When the thermostats are logged out, they won’t work with the Google Home app or the largely-replaced Nest app. That means no remote controlling, no phone alerts, no connects with voice assistants, no automatic scheduling and no linking to other devices like Nest Protect smoke detectors.

With the “smart” and “learning” features gone, early Nest adopters will be left with, well, just a thermostat. They will be able to twist the dial to control temperatures or switch heating/cooling modes and any schedules set on the thermostat will continue to work. While Nest thermostats have onboard controls to manage these basics, it’s difficult to recommend that users continue using them, especially since they won’t be getting any software updates. This means if there’s a bug or breakdown, there’s nothing you can do about it.

Which Nest thermostat do you have?

Not sure if your older Nest thermostat is one of the models that’s getting cut off? It’s not always easy to tell, especially since the older Nest Learning models tend to look alike. Google Nest has a guide on the little differences between them, but the first two generations tend to be smaller and more bulbous than the thermostats that came later. To be 100% sure, you can dismount the thermostat and check its mounting plate, as there are small differences in the plate logos and colors from one generation to the next. 

Nest’s offer of a replacement model

If you were early on the Nest thermostat train or your home inherited a Nest Learning Thermostat from previous owners, you may feel a little upset about such a firm cutoff date. Nest has something to make that a bit easier: The company will be offering US and Canadian owners of defunct thermostats a deal for the latest Nest Learning Thermostat 4, selling it for 50% off or $150. 

That’s still a bit steep for a mandatory upgrade, and while we liked the Nest Thermostat 4 you may also want to check out our other smart thermostat recommendations to get the full picture of what’s available as October nears.