Google ended support for the first-generation Nest Learning Thermostat, the U.S. second-generation model, and the European second-generation model on October 25, 2025. Those thermostats no longer work with the Nest or Google Home apps, and cloud features such as remote control, notifications, Home/Away Assist, third-party assistants, and Nest Protect integration are gone.
The hardware was not completely disabled: Google says owners can still adjust affected thermostats at the wall, and schedules stored on the device continue to run. However, the products no longer receive software or security updates. For many homes, that makes replacement—after checking HVAC compatibility—the more practical choice.
As an Amazon Associate I earn from qualifying purchases.
Which Nest thermostats are affected?
Google’s October 25, 2025 cutoff applies specifically to these older Nest Learning Thermostat models:
| Model | Original launch | Status |
|---|---|---|
| Nest Learning Thermostat, 1st generation | 2011 | Affected |
| Nest Learning Thermostat, 2nd generation, U.S. | 2012 | Affected |
| Nest Learning Thermostat, 2nd-generation European version | 2014 | Affected |
| Nest Learning Thermostat, 3rd generation | 2015 | Not included in this shutdown |
| Nest Thermostat E, including the European version | 2017 | Not included in this announcement |
| Nest Thermostat | 2020 | Not included in this announcement |
| Nest Learning Thermostat, 4th generation | 2024 | Not included in this announcement |
Google’s end-of-support documentation and Nest announcement provide the affected-model list. An old Nest is not automatically an affected Nest: the third-generation Learning Thermostat is an important exception.
#1 Best Overall
- An Alexa thermostat - Amazon Smart Thermostat is an easy way to switch from a traditional thermostats for homes and help reduce energy usage.
- Create comfort zones throughout your home by connecting to select Alexa devices to automatically adjust heating and cooling based on temperature readings or presence detection.
- Save money and energy - After purchase, Amazon will send you an email with details about home thermostat rebates that may be available from energy providers in your area.
- Save energy - According to EPA estimates, ENERGY STAR certified thermostats save an average of $90 on yearly energy bills.
- Programmable thermostat and automatic control - Create your own home, away and sleep schedules, or have Alexa automatically control the temperature with Alexa+ advanced features.
What stopped working?
After the cutoff, the affected thermostats were unpaired and removed from the relevant app. According to Google, owners lost:
- Remote temperature control from a phone or tablet.
- App-based status checks and notifications.
- Control through Google Assistant, other third-party assistants, and cloud-connected integrations.
- Home/Away Assist.
- Multi-device Eco mode control.
- Software and security updates.
- Integration with Nest Protect, including the documented emergency-shutoff routine.
Important safety-related change: Google says affected thermostats disconnect from Nest Protect and that emergency shutoff will no longer run. Do not assume that this function remains active simply because both products are still mounted and powered.
“Support ended” does not mean Google physically bricked every thermostat. The distinction matters: the wall unit can still operate locally, but it is no longer a fully connected smart thermostat.
What still works?
Google says owners can continue using the thermostat itself to change temperature settings, select available heating or cooling modes, manage auto-schedule settings, and access other controls available directly on the device. Preset schedules stored on the thermostat continue to run.
That local operation may be enough for a household that normally leaves the thermostat alone. It does not restore app control, remote access, alerts, cloud routines, security updates, or the former Nest Protect integration. Google also warns that the lack of updates may lead to declining performance over time; it does not say that every affected unit will immediately stop heating or cooling.
How to identify your Nest model
Do not identify the thermostat solely by age or appearance. Use the following checks:
- Look at the original purchase records, packaging, or installation documentation.
- Check model information on the thermostat, base, or any retained installation paperwork.
- Use Google’s thermostat help center and model-identification guidance.
- If the device disappeared from the app after October 25, 2025, compare its documented physical design and installation date with Google’s model information—but treat appearance as a clue, not proof.
If a thermostat remains visible in an app, that alone does not prove it is supported; cached app data, delayed changes, account circumstances, or a different model may explain what you see. Verify the model number whenever possible.
Should you keep it or replace it?
Keeping it may be reasonable if:
- You are comfortable making adjustments at the wall.
- The stored schedule meets your needs.
- You do not need remote access, notifications, or voice control.
- Your heating and cooling system is operating reliably.
- You accept that the thermostat will receive no further software or security updates.
Replacement is the better choice if:
- You depend on phone control, alerts, or Home/Away behavior.
- Your home uses Nest Protect emergency shutoff integration.
- The thermostat has connection, battery, or reliability problems.
- You want a product with current security support.
- You manage a rental or other property where remote status and control are important.
There is no requirement to replace a unit merely because Google ended cloud support. The decision is whether local-only operation provides enough control and confidence for the home.
Google’s replacement offer
Google said eligible users in the United States and Canada were contacted with an offer for the Nest Learning Thermostat (4th generation) at $149.99 in the U.S. or CA$219.99 in Canada. This was an eligibility-based offer tied to affected devices and household-specific communications, not a price available automatically to every owner indefinitely.
Rank #2
- ENERGY STAR certified smart thermostat for home that helps you save energy and stay comfortable.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.Connectivity Protocol : Wi-Fi.Connectivity Protocol : Wi-Fi
- 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. Lock feature: No
- Nest Thermostat turns itself down when you leave, so you don’t waste energy heating or cooling an empty home; easily program 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]
- Savings Finder looks for more ways your thermostat can help you save, and suggests tweaks to your schedule in the app; check with your energy provider to learn more about rebates and more ways to save on a Nest thermostat
Check the original Google communication or contact Google Support before assuming the offer remains available. Google’s U.S. product listing showed a regular price of $279.99 on August 18, 2026, with one Nest Temperature Sensor included; retail prices and promotions can change.
Is the fourth-generation Nest a suitable replacement?
For a household already using Google Home, the fourth-generation Nest Learning Thermostat is the most direct current replacement. Google says it:
Do these 3 things before closing this tab:
1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errors- Works with the Google Home app.
- Is Matter-certified and can be controlled through other Matter-enabled apps and voice assistants after setup.
- Includes a second-generation Nest Temperature Sensor.
- Supports most 24-volt HVAC systems.
- Adds support for systems involving ventilation, humidifiers, and dehumidifiers.
- Usually does not require a C wire because of Power Sharing technology, although a C wire or Nest Power Connector may be necessary in some installations.
Matter does not mean Google Home is optional during installation. Google says the fourth-generation thermostat requires the Google Home app for setup; Matter broadens control options after setup rather than eliminating Google’s setup requirement.
Do not assume it is a drop-in replacement
The fourth-generation thermostat is designed for many 24-volt gas, electric, oil, forced-air, heat-pump, and radiant systems. Compatibility still depends on the actual equipment and wiring. Run Google’s compatibility checker before buying or removing the existing thermostat.
Take extra care with:
- Heat pumps, auxiliary heat, emergency heat, and dual-fuel systems.
- Multi-stage heating or cooling.
- Humidifiers, dehumidifiers, and ventilation equipment.
- Zone-controlled systems.
- Homes without a C wire.
- European installations using different wiring conventions or Heat Link equipment.
- Rental properties where the owner may need to authorize the work.
For complex systems, unclear wiring, or unfamiliar equipment, professional HVAC installation is safer than choosing based on the headline price. Photographing the existing wiring is useful, but it is not a substitute for confirming terminal functions and system compatibility.
What are the alternatives?
Staying with Google makes sense if you want the familiar Nest scheduling approach, already use Google Home, or qualify for the replacement offer. Google’s security documentation lists support for the fourth-generation model through at least August 20, 2029 under its minimum five-year policy, calculated from the August 20, 2024 U.S. sale date. That is a minimum security-update date, not a promise that every cloud feature will operate until then.
Free tools Windows power users keep installed
One-click scans. No signup required.
Switching platforms may be preferable if you want to reduce dependence on Google Home, use Apple Home or another ecosystem as your primary platform, or prefer a different manufacturer’s approach to cloud services and privacy. ecobee’s official smart-thermostat range is one alternative category, but any replacement still needs to match the home’s HVAC equipment and regional wiring requirements.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Buying a used Nest
A first-generation or second-generation Learning Thermostat is a poor used purchase for anyone expecting app control, remote access, voice assistants, notifications, or cloud integrations. Those services have already ended. It may still provide local control, but its low resale price should not be mistaken for a supported smart-home product.
A third-generation Learning Thermostat was not included in this particular shutdown, but it is still an older product. Google’s published list does not promise indefinite future support, so buying one used should not be treated as the same long-term decision as buying a current model.
Rank #3
- 【Notice】Please make sure to read the installation and wiring instructions provided in the pictures carefully before buying. If you are inexperienced with installation, it is advised to be cautious when making a purchase to avoid issues like product failure or incompatibility. (Verify the existing base to ensure only 2 to 5 wires are compatible for installation and wiring).
- 【Thermostat Applications】for with Conventional Single-Stage Heating (Gas/Oil/Electric Furnace) & Ventilation & Air Conditioning, up to 1 Heat and 1 Cool. ( TIP: Does not work Multistage Heating & Air Conditioning, and HVAC Central Air Conditioner Heat Pump System )
- 【Incompatible Systems】Does not work multistage systems (1H/2C, 2H/2C), HVAC heat pump systems (2H/1C, 4H/2C), PTACs, 3-wire hydronic (hot water), dual fuel/hybrid heating. Does not work line voltage systems (120-240V electric baseboards heat); mini split heat pump air conditioner, RV air conditioners mach and roughneck series.
- Suuwer S701 Single Stage Non-Programmable Digital Thermostats for Home 1 Heating and 1 Cooling Single-Stage Systems. ( Dual powered by 24VAC power or 2 AAA batteries, No common wire (c-wire) required on most systems).
- Easy-to See and Read: Display with blue backlight, large clear backlit digital display, very suitable for middle-aged and elderly people.
Practical decision checklist
- Identify the model. Confirm whether it is a first-generation, second-generation, European second-generation, or excluded model.
- List the features you actually use. Include app control, alerts, voice control, Home/Away routines, sensors, and Nest Protect integration.
- Decide whether local-only operation is acceptable. If yes, replacement can wait while the thermostat remains reliable.
- Check Google’s offer. Eligible U.S. and Canadian owners should verify whether their household-specific replacement communication is still valid.
- Verify HVAC compatibility before purchasing. Pay particular attention to heat pumps, stages, accessories, zones, C-wire requirements, and European systems.
- Use a qualified installer when the system is complex. The cost of correcting a wiring or equipment mistake can outweigh the savings from DIY installation.
Frequently Asked Questions
Is the third-generation Nest Learning Thermostat affected?
No. Google’s published list for the October 25, 2025 shutdown does not include the third-generation Learning Thermostat. That does not guarantee indefinite future support.
Can I still use an affected Nest manually?
Yes. Google says direct controls on the thermostat remain available, including temperature changes and supported modes.
Will my existing schedule continue?
Google says preset schedules stored on the device continue to run. Cloud-based app features do not return.
Can I control an affected Nest with Alexa or Google Assistant?
No. The thermostat no longer works with the Nest or Google Home apps and loses cloud-connected assistants and integrations.
Does Nest Protect still shut off the HVAC system?
Google says affected thermostats disconnect from Nest Protect and emergency shutoff will no longer run.
Windows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallCrashes, No Sound, or Screen Glitches?
Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteDo I need a C wire for the fourth-generation Nest?
Usually not, according to Google, but some installations require a C wire or Nest Power Connector. Confirm compatibility before installation.
Is Google’s $149.99 replacement price available to everyone?
No. It was an offer for eligible users in the United States and Canada, generally communicated through household-specific Google outreach.
Does Matter let me set up the fourth-generation Nest without Google Home?
No. Google says Google Home is required for initial setup. Matter enables broader control options afterward.
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.
The Tool Desk
Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →
