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Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Repair Windows errors before they cause bigger problemsFix Now →Google ended support on October 25, 2025 for three early Nest Learning Thermostat models: the 1st-generation model released in 2011, the 2nd-generation model released in 2012, and the 2nd-generation European model released in 2014. The thermostats can still be controlled at the wall and existing on-device schedules can continue to run, but app control and other cloud-connected features are gone. Google’s support notice confirms the cutoff and its consequences.
Which Nest thermostats are affected?
Google’s announcement applies specifically to early Nest Learning Thermostats, not every older Nest product.
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| Model | Release year |
|---|---|
| Nest Learning Thermostat, 1st generation | 2011 |
| Nest Learning Thermostat, 2nd generation | 2012 |
| Nest Learning Thermostat, 2nd-generation European version | 2014 |
The 3rd-generation Nest Learning Thermostat, Nest Thermostat E, and newer Nest models are not included in the models named in Google’s cutoff announcement. Do not identify a thermostat by its finish, display, or rotating ring alone. Use Google’s model-identification and device-management instructions.
What stopped working after October 25, 2025?
Affected thermostats were unpaired and removed from the Google Nest and Google Home apps. Their connected features no longer work, including:
#1 Best Overall
- Nest’s smartest, most advanced thermostat yet, the Google Nest Learning Thermostat (4th gen) is a beautiful, brilliant way to save energy, keep your home comfortable, and help make sure your heating and cooling systems are running smoothly[4]
- Savings you can count on: The Nest Learning Thermostat can help save up to 31% on heating and cooling bills[2]
- Improved compatibility: It works with most 24V systems, including gas, electric, oil, forced air, heat pump, and radiant, and no C wire is required for installation in most homes; visit the Nest Compatibility Checker for more info[5]
- Easy control in the Google Home app: Adjust on your phone from anywhere[1] or by using your voice with Alexa, Siri, or Google Assistant smart speaker[3], it’s easy to install yourself and it’s Matter compatible for simple integration into your smart home[5]
- Beautiful design: With a 60% larger display[11] and Dynamic Farsight, you can see info from across the room[1]; choose the design, like a clock or the weather; it automatically adjusts brightness for the best readability or you can adjust manually
- Remote temperature control from a phone or tablet
- Google Nest and Google Home app access
- Notifications
- Google Assistant and other third-party assistant control
- Cloud-based Home/Away Assist and multi-device Eco features
- Software and security updates
- Nest Protect integration, including emergency HVAC shutoff
This is not simply a display or app outage. Google has ended cloud support for these models. If an old thermostat still appears in an app, that may reflect cached data, account behavior, or an incomplete rollout; it is not evidence that the model remains supported.
What still works?
The thermostat is not necessarily incapable of heating or cooling. Assuming the thermostat and HVAC equipment are otherwise functioning normally, Google says owners can still use the device directly to:
- Adjust the temperature
- Switch between heating, cooling, and other available modes
- Manage auto-schedule settings
- Use preset schedules stored on the thermostat
- Access settings and functions available locally on the device
The important distinction is between local HVAC control and cloud-connected control. The first may remain available; the second does not. Existing schedules can continue to operate, but the unsupported thermostat should no longer be relied on for remote alerts, app monitoring, security updates, or Nest Protect emergency shutoff.
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Rank #2
- Nest’s smartest, most advanced thermostat yet, the Google Nest Learning Thermostat (4th gen) is a beautiful, brilliant way to save energy, keep your home comfortable, and help make sure your heating and cooling systems are running smoothly[4]
- Savings you can count on: The Nest Learning Thermostat can help save up to 31% on heating and cooling bills [2]
- Improved compatibility: It works with most 24V systems, including gas, electric, oil, forced air, heat pump, and radiant, and no C wire is required for installation in most homes; visit the Nest Compatibility Checker for more info[5]
- Easy control in the Google Home app: Adjust on your phone from anywhere[1] or by using your voice with Alexa, Siri, or Google Assistant smart speaker[3], it’s easy to install yourself and it’s Matter compatible for simple integration into your smart home[5]
- Beautiful design: With a 60% larger display[11] and Dynamic Farsight, you can see info from across the room[1]; choose the design, like a clock or the weather; it automatically adjusts brightness for the best readability or you can adjust manually
Should you keep or replace the thermostat?
Keeping it may be reasonable if:
- Everyone is comfortable adjusting it at the wall.
- The existing schedule is adequate.
- Remote access and notifications are not important.
- The HVAC system is stable.
- You accept that the device will receive no further software or security updates.
Keep in mind that loss of Nest Protect emergency shutoff is a separate consideration. Local temperature control does not restore that cloud-connected safety integration.
Replacement makes more sense if:
- You need phone-based control.
- Your household uses Google Assistant or smart-home automations.
- You depend on temperature or HVAC notifications.
- Nest Protect integration matters.
- The thermostat is already unreliable.
- Your HVAC system needs newer controls or broader compatibility.
Current Google replacement options
Google’s targeted replacement offer was not a permanent price. Eligible owners were offered the 4th-generation Nest Learning Thermostat for $149.99 in the U.S. or CA$219.99 in Canada, with the promotion stated to expire on December 31, 2025. That offer has expired; do not assume those prices are still available.
On the U.S. Google Store page reviewed on August 18, 2026, the regular listed prices were $279.99 for the 4th-generation Learning Thermostat and $129.99 for the standard Nest Thermostat. Prices and availability can change.
Rank #3
- Nest’s smartest, most advanced thermostat yet, the Google Nest Learning Thermostat (4th gen) is a beautiful, brilliant way to save energy, keep your home comfortable, and help make sure your heating and cooling systems are running smoothly[4]
- Savings you can count on: The Nest Learning Thermostat can help save up to 31% on heating and cooling bills[2]
- Improved compatibility: It works with most 24V systems, including gas, electric, oil, forced air, heat pump, and radiant, and no C wire is required for installation in most homes; visit the Nest Compatibility Checker for more info[5]
- Easy control in the Google Home app: Adjust on your phone from anywhere[1] or by using your voice with Alexa, Siri, or Google Assistant smart speaker[3], it’s easy to install yourself and it’s Matter compatible for simple integration into your smart home[5]
- Beautiful design: With a 60% larger display[11] and Dynamic Farsight, you can see info from across the room[1]; choose the design, like a clock or the weather; it automatically adjusts brightness for the best readability or you can adjust manually
| Feature | Nest Learning Thermostat, 4th gen | Nest Thermostat |
|---|---|---|
| U.S. listed price seen | $279.99 | $129.99 |
| Scheduling | Learning features | Guided Quick Schedule; not a Learning Thermostat |
| Temperature sensors | One 2nd-generation sensor included; supports additional sensors | Not compatible with Nest Temperature Sensors |
| Smart-home control | Google Home and Matter-compatible apps | Google Home and supported platforms |
| HVAC positioning | Designed for most listed 24-volt systems, including more advanced configurations | Google says it works with approximately 85% of systems |
Nest Learning Thermostat, 4th generation
The 4th-generation Nest Learning Thermostat is the closest premium successor for owners who want learning schedules, room-by-room sensing, Google Home control, and Matter compatibility. Google lists features including humidity, temperature, motion, and ambient-light sensors, a trim plate and steel plate, a two-year standard warranty, and support for most 24-volt HVAC systems.
It includes one 2nd-generation Nest Temperature Sensor, which can be useful when the thermostat is installed in a hallway, near a draft, or in a room that does not represent the temperature occupants care about most.
Standard Nest Thermostat
The standard Nest Thermostat is the lower-cost option for households that mainly want Google Home remote control and basic smart scheduling. It does not support Nest Temperature Sensors, does not offer the Learning model’s scheduling behavior, and has a narrower stated HVAC compatibility profile. Some installations may require a C wire or Nest Power Connector.
Rank #4
- Programmable smart thermostat that learns your schedule and the temperatures you like and programs itself to help you save energy and stay comfortable
- Home/Away Assist automatically adjusts itself to an Eco Temperature after you leave, so you don’t heat or cool an empty home; remote control lets you change the temperature from anywhere on your phone, laptop, or tablet[1]
- With Energy History, just check your phone to see how much energy you used and why, or use Quick View on the display to reach Energy History, settings, or your schedule; the Nest Leaf appears when you choose a temperature that saves energy
- Smart thermostat with HVAC monitoring, which looks out for your heating and cooling systems; sends an alert if something doesn’t seem right, along with helpful reminders to make maintenance easier[2]
- The Nest Learning Thermostat works with the Nest Temperature Sensor (sold separately) to help make sure a certain room is the exact temperature you want it to be
Check HVAC compatibility before buying
Do not assume that a new thermostat will fit every installation simply because the old Nest worked. Run Google’s compatibility check for the exact replacement model before removing the existing thermostat:
Compatibility is especially important for heat pumps, multi-stage systems, radiant heating, humidifiers, dehumidifiers, ventilation equipment, zone controls, and installations without a conventional common-wire arrangement. Google says the 4th-generation model does not require a C wire in most homes, but “most” is not “all.”
Replacing an unsupported thermostat safely
- Confirm the exact thermostat model.
- Check the replacement’s HVAC compatibility before purchasing.
- Turn off HVAC power at the appropriate breaker or service switch.
- Photograph the existing wiring and label conductors before disconnecting anything.
- Follow the manufacturer’s wiring and setup instructions.
- Test heating, cooling, fan operation, and any auxiliary equipment after installation.
Professional installation is prudent for complex HVAC systems or unusual wiring. A wiring mistake can damage equipment or leave the home without reliable heating or cooling. Google’s product pages promote installation assistance through SafeStreets, although installation pricing was not verified here.
Best Value
- ENERGY STAR certified smart thermostat for home that helps you save energy and stay comfortable.Connectivity : Wi-Fi - 802.11b/g/n 2.4 GHz, 802.11a/n 5 GHz Wi-Fi., Wireless interconnect : Bluetooth Low Energy Please refer to the product description section below for all applicable legal disclaimers.Product note: You can also check your system’s compatibility before purchasing a Nest thermostat with our online Nest Compatibility Checker on the Google Nest support page
- The Nest Thermostat is designed to work without a C wire in most homes, but for some systems, including heating only, cooling only, zone controlled, and heat pump systems, you’ll need a C wire or other compatible power accessory
- Nest Thermostat turns itself down when you leave, so you don’t waste energy heating or cooling an empty home. Lock feature: No
- Programmable thermostat that lets you create an energy efficient schedule in the Google Home app on your Android or iPhone
- Remote control lets family members change the thermostat temperature from anywhere on a phone, laptop, or tablet[1]
What about other thermostat brands?
Staying with Google is the simplest route for households already using Google Home. Moving to another platform, such as ecobee, Honeywell Home/Resideo, or tado, may reduce dependence on one vendor’s ecosystem, but it also means checking regional availability, HVAC compatibility, subscriptions, and smart-home integrations. A basic programmable thermostat is another option if dependable local control matters more than remote access.
Common misunderstandings
“My old thermostat still heats the house, so support must still be active.”
Not necessarily. Local heating, cooling, and scheduling can continue even though app and cloud features have ended.
“Every second-generation Nest thermostat is affected.”
Google’s announcement names the 2nd-generation Nest Learning Thermostat from 2012 and the 2nd-generation European version from 2014. Product identification matters.
“Google killed the thermostat completely.”
That is too broad. Google ended app, cloud, software, and security support. Direct operation at the thermostat may remain.
“The $149.99 replacement price is still available.”
Google stated that the targeted offer expired on December 31, 2025. Any current discount must be verified separately.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
