If Your Google Nest Thermostat Support Ended, Here's Where You Can Grab the New Model on Sale

In late 2025, Google announced it would no longer support its 1st and 2nd generations of the Google Nest smart thermostat. The support cancellation officially went into effect on October 25, and thousands of older devices have been affected. If you've been using an older generation of the Google Nest smart thermostat to heat and cool your home until now, you'll need a new one ASAP. Old models have been disconnected and removed from the Nest and Google Home app—the emergency shut-off feature no longer works either.

Luckily, Google Nest support for the 3rd and 4th generations of the Google Nest Learning Thermostat will not be affected. Since we’ve tested the 3rd generation smart thermostat ourselves and even named it “Best Design,” here’s everything you need to know about buying a newer version.

Google Nest Learning Thermostat (3rd Gen)

The Google Nest Learning Thermostat (3rd Gen) still works now that Google Nest support has been cut off for 1st and 2nd gens. We named this smart thermostat “Best Design” due to its sleek look, polished metal finishes, and high-resolution display. Not only does it display the temperature indoors, but it also automatically lights up and displays outdoor temps, the weather, and the time when you enter the room. It even tracks energy usage and has an eco-setting option that automatically adjusts the temperature when no one is home.

This model is compatible with Alexa, Google Assistant, and other Wi-Fi-enabled controllers. It is programmable and can even learn your home’s personal schedule and the temperatures you like during each part of the day. This smart thermometer programs itself to help you save energy (and money). The Nest Leaf icon will appear on the smart device when you choose an energy-saving temperature. It also monitors your HVAC system to make sure it’s working properly and provides maintenance reminders when necessary. However, before buying, we recommend double-checking its compatibility (which you can verify online), as it does not work with older HVAC systems or furnaces.

We also love that it comes in several colors, including brass, stainless steel, black, and copper—though it has already sold out in some styles. Right now, it’s on sale at Amazon for $158.

Google Nest Learning Thermostat (4th Gen) + Nest Temperature Sensor (2nd Gen)

The Google Nest Learning Thermostat (4th Gen) also works now that Google Nest support for older models has been phased out. If you prefer more updated features, this model includes many settings that the 3rd Gen doesn’t. This includes a customizable home screen that can display time, temperature, weather, humidity, outdoor air quality, and more (versus a static screen), and energy-saving implementations that can either run automatically or require you to opt in through the Google Home app. The 4th Gen is also the most compatible Google Nest to date. It doesn’t require a C-wire (or common wire) for installation and works with most 24-volt home systems when connected to Wi-Fi, like most smart thermostats.

It also includes the Nest Temperature Sensor (not compatible with the 3rd Gen), which measures temperatures more in-depth to eliminate hot and cold spots in any given room. And while the 3rd Gen also requires the separate Nest app, the 4th Gen offers full functionality and control in the Google Home app, condensing all of your smart home devices into one hub. It even has a 60% larger display than the 3rd generation, and is enabled with Smart Schedule (versus the 3rd Gen’s Auto-Schedule program). Smart Schedule learns your preferred temperatures, responds to your preferences over time, and can provide suggestions—rather than automatic updates—based on your usage patterns.

Now that Google Nest support for older models has been deactivated, it’s time to upgrade to a supported model. If you want to maintain compatibility with your other Google smart home devices, there’s time to upgrade to a newer model while they’re still on sale. Right now, you can buy the Google Nest Learning Thermostat (3rd Gen) on sale at Amazon for $158, or the Google Nest Learning Thermostat (4th Gen) on sale for $257. You can browse more smart thermostat options below.

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