Google ended support for the first- and second-generation Nest Learning Thermostats on October 25, 2025. This was more than a pause in software updates: Google says the affected thermostats no longer connect to or work in the Nest or Google Home apps, and they no longer receive software or security updates. Connected features such as remote control, voice-assistant integrations, Home/Away Assist, multi-device Eco control and the thermostat connection to Nest Protect are also affected.
That does not prove every affected thermostat has stopped controlling heating or cooling locally. Test the controls on the wall unit before replacing it—but do not rely on an unsupported thermostat for an unattended property, freeze protection or remote monitoring.
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Which Nest thermostats are affected?
The shutdown applies specifically to these three early models:
The Tool Desk
Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →| Model | Introduced | Affected? |
|---|---|---|
| Nest Learning Thermostat, 1st generation | 2011 | Yes |
| Nest Learning Thermostat, 2nd generation | 2012 | Yes |
| Nest Learning Thermostat, 2nd-generation European version | 2014 | Yes |
| Nest Learning Thermostat, 3rd generation | Later generation | Not included in this specific shutdown |
| Nest Thermostat E | Later generation | Not included in this specific shutdown |
| Google Nest Thermostat | 2020 | Not included in this specific shutdown |
| Nest Learning Thermostat, 4th generation | 2024 | Not included; current model |
Do not confuse the Nest Learning Thermostat 2nd generation with newer products described using “2nd generation” in their name. The product category and model designation matter.
#1 Best Overall
- 【TL284443 Battery Replacement】: Widely compatible with Nest Learning Thermostat 3rd Generation gen 3 A0013 T3007ES, part number: TL284443
- 【650mAh High capacity Battery】: Battery for Nest thermostat is made of high quality lithium polymer material, with a capacity of up to 650 mAh, which can provide you with safe and efficient charging
- 【Battery for Nest Thermostat gen 3】: Battery type: Li-Polymer, capacity: 650 mAh / 2.1 Wh, voltage: 3.7 V, weight: 12.1 g, size: 1.97 x 1.7 x 0.78 inch
- 【Battery for Nest Thermostat 3rd Generation】: TL284443 battery has no memory effect, with over-charging, over-discharging, overheating, over-current and short-circuit protection
- 【Battery for Nest Thermostat A0013 T3007ES】: New battery for Nest 3rd generation thermostat achieve optimal performance and longevity only after 3 to 5 full charge/discharge cycles
Check the thermostat’s original packaging, installation records, device label or Google account history if it has already disappeared from the app. Google’s support guidance also explains how model and serial details were identified through the Nest or Home app, although that route may no longer be available for retired devices.
What ended on October 25, 2025?
Google’s announcement describes several separate changes:
- App access: the thermostat was unpaired and removed from the Nest or Google Home app.
- Remote control: temperature changes and other controls can no longer be made normally through the app.
- Software and security updates: the affected models no longer receive them.
- Voice and third-party integrations: connected assistants and integrations were disconnected.
- Home/Away Assist: this feature was removed for the retired thermostats.
- Multi-device Eco control: coordinated Eco-mode control is no longer available.
- Nest Protect connection: the thermostat-to-Protect connection and associated emergency shutoff behavior no longer operate as before.
An “offline” message is therefore not necessarily evidence of a new Wi-Fi or hardware fault. Reinstalling the app, resetting the router or reconnecting Wi-Fi is unlikely to restore a cloud service that Google has officially retired.
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Google’s end-of-support notice confirms the loss of app, cloud and connected features. It does not, in the available guidance, say that every affected thermostat immediately becomes incapable of local HVAC control. Avoid describing the device as universally “bricked” or promising that every schedule and HVAC function will continue unchanged.
To check local operation safely:
- Use the physical thermostat to select a temperature above the current room temperature and call for heat, if appropriate.
- After allowing the system time to respond, confirm that the heating equipment starts.
- Return the setting to normal, then test cooling only if the season and HVAC manufacturer’s instructions make that safe.
- Check whether the display, temperature reading and physical controls respond consistently.
If the thermostat is already unresponsive, investigate power, wiring and HVAC faults separately rather than assuming the retirement notice is the only cause. Even if local operation works, an unsupported thermostat is a poor choice for a vacant building, a property needing remote freeze monitoring, or a system that depends on connected safety automation.
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
What owners should not do
- Do not factory-reset it first. A reset may remove configuration and could make the device harder to use if setup depends on cloud enrollment. Decide whether to replace it before resetting.
- Do not buy another first- or second-generation unit used. It may look inexpensive, but its official connected service has ended.
- Do not assume all older Nest thermostats are affected. Third-generation Learning Thermostats and Thermostat E are not included in this specific shutdown.
- Do not assume a replacement is plug-and-play. The number of wires alone does not establish compatibility.
Should you keep the thermostat or replace it?
Keeping it temporarily may be reasonable when:
- Heating and cooling respond reliably to the physical controls.
- You accept losing app, voice and remote access.
- The property is occupied and does not require remote monitoring.
- You are not relying on Home/Away automation, Nest Protect thermostat integration or unattended freeze protection.
Replacement is the safer choice when:
- You need remote control or alerts.
- The property is vacant for periods of time.
- The thermostat controls a heat pump, auxiliary or emergency heat, multi-stage equipment, humidifier, dehumidifier, boiler, radiant system or zones.
- Nest Protect integration or automated safety behavior is important.
- The device is unreliable or cannot be controlled locally.
Replacement checklist for a construction or HVAC project
- Photograph the existing wiring before disconnecting anything.
- Record each wire and terminal, including unused wires in the wall.
- Identify the system: conventional furnace and air conditioner, heat pump, boiler, radiant heat, multi-stage equipment, zoned control or accessory equipment.
- Check for a C-wire. A thermostat that operated without one may still need additional power with a replacement.
- Use the manufacturer’s compatibility checker for the exact installation, not a generic wire-count comparison.
- Check accessories. Confirm support for remote sensors, humidification, dehumidification and emergency or auxiliary heat.
- Check local utility rebates before purchasing; eligibility, amounts and deadlines vary by ZIP code and approved model.
- Choose the ecosystem deliberately: Google Home, Apple Home, Alexa, Matter or a local-control solution.
European installations require extra care. The affected European model may use a Heat Link and different wiring arrangements, so North American compatibility advice should not be applied automatically. A qualified heating professional is appropriate where the wiring, heat pump controls or zone equipment is unclear.
Current replacement categories
Nest Learning Thermostat, 4th generation
This is the most direct Google Home replacement for owners who want the current Learning model and broader HVAC compatibility. Google also lists support for a second-generation Nest Temperature Sensor. It remains necessary to check the exact system and installation, and Google’s published security-support table lists August 20, 2029 as the minimum security-update date for the US device—not a guarantee that every feature or cloud service will remain available until then. See the Google Store thermostat lineup.
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Google Nest Thermostat
This is the simpler, lower-cost Google option for compatible systems. Google lists it as working with 85% of systems, but says some heating-only, cooling-only, zone-controlled and heat-pump installations require a C-wire or Nest Power Connector. It does not provide the same Learning model experience, and Google lists it as incompatible with the Nest Temperature Sensor.
Nest Thermostat E or third-generation Learning Thermostat
These models are not included in the specific 2025 shutdown, but availability and support can depend on country and remaining lifecycle. Used or old-stock equipment carries more lifecycle risk, so do not buy one solely to preserve the old Nest interface.
Non-Google smart thermostat
Consider another manufacturer when local control, Apple Home or Alexa support, broader interoperability or a different vendor’s data and lifecycle policy matters more than staying in Google Home. Verify HVAC compatibility, account requirements, subscriptions and which features work without the cloud.
Rank #3
- 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
Traditional programmable thermostat
A conventional programmable model can be the most dependable option for a home that only needs local scheduling and temperature control. It gives up remote access, energy dashboards and smart-home automations, but avoids dependence on a vendor account for basic operation.
Power connectors, installation and rebates
Google offers a Nest Power Connector for compatible installations that lack a conventional C-wire. It is not a universal substitute for checking the HVAC system. Heat pumps, multi-stage equipment, zones and European Heat Link arrangements may require specialist assessment. Google also links to professional installation through SafeStreets; obtain a location-specific quote before booking.
Use Google’s rebate finder to check the ZIP code and local utility conditions before ordering. An upgrade offer is not necessarily a universal public discount: Google says affected owners received an email offer, while people who did not receive one should contact Google Support. Any final price or discount can depend on the account, country and date.
What happens to schedules and energy history?
Google confirms that app and cloud connectivity ended, so normal app-based access to energy history should not be assumed. The announcement also explicitly removes Home/Away Assist, multi-device Eco control and the Nest Protect thermostat connection.
The available official wording does not establish that every existing schedule is stored locally or that every on-device behavior remains unchanged. If you are keeping the thermostat temporarily, test its physical schedule and manual controls before relying on them, and avoid a factory reset until you have chosen a replacement or confirmed a workable setup.
Rank #4
- 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
Bottom line
This is a targeted retirement, not the end of every Nest thermostat. If your device is a 1st-generation, 2nd-generation or European 2nd-generation Nest Learning Thermostat, Google support ended on October 25, 2025 and its connected features are gone. Test local HVAC control if you need a short-term bridge, but replace the thermostat when remote access, safety automation, complex HVAC control or reliable unattended operation matters.
Frequently Asked Questions
Is the third-generation Nest Learning Thermostat affected?
No. Google’s October 25, 2025 retirement specifically covers the first-generation, second-generation and European second-generation Nest Learning Thermostats. Third-generation models are not included in this specific shutdown, although continued support is not a guarantee of indefinite future service.
Is Nest Thermostat E affected?
Nest Thermostat E is not included in this specific retirement. Availability and support can vary by country.
Do I need a C-wire for a replacement?
It depends on the thermostat, HVAC system and installation. Some Google Nest Thermostat installations may need a C-wire or Nest Power Connector, especially heating-only, cooling-only, zone-controlled and heat-pump systems.
Quick Recap
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