Recommended Free Tools
Google’s replacement program for Nest Thermostat Heat Links in Europe is designed to remove cost barriers for customers who need an updated or replacement unit. If your home uses a Nest Thermostat paired to a Heat Link, you may be asked to swap the Heat Link hardware—typically at no charge.
This guide explains what to expect, how to confirm eligibility, how to prepare your setup, and what to check after installation so you don’t end up with a thermostat that powers up but won’t actually control heating.
As an Amazon Associate I earn from qualifying purchases.
What Google is changing and why it matters
The Heat Link is the control interface between your thermostat and your heating system. If Google initiates a replacement for certain European units, the goal is to reduce customer friction by handling the hardware cost directly and guiding you through the swap.
For most households, the key impact is operational: your thermostat may temporarily lose control until the new Heat Link is installed and paired, and you’ll want to re-verify heating behavior after power is restored.
#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
What gets replaced (and what usually stays the same)
In a Heat Link replacement, the thermostat itself generally remains installed and retains its user-facing settings in the Nest app. What changes is the Heat Link hardware that communicates with the thermostat and interfaces with the boiler or heating system.
Typical elements that often stay the same:
- Your Nest account and home structure in the Nest app
- Your existing thermostat location and display settings (temperature units, schedules)
- Your boiler/heating components (radiators, boiler itself), unless an installer finds an issue
Typical elements that may change:
- Heat Link device hardware
- Pairing status and connection state
- Some integration or automation behavior until you complete verification
Who is affected in Europe and how Google decides eligibility
Google’s program targets specific Heat Link devices tied to identifiable eligibility criteria. In practice, that means not every European Nest Thermostat user will automatically qualify—your device model, region, and/or hardware identification are what matter.
How customers usually find out:
- A message in the Nest app and/or an email to the account that owns the device
- A web-based eligibility check linked from Google communications
- An installer or retailer notification referencing a replacement campaign
Best practice: don’t guess. Confirm using the exact device details Google requests, because mismatches can delay shipment or pairing steps.
Prerequisites before you start
Before any swap, collect information and reduce friction during the reinstall. You’ll move faster if you already have these details.
- Wi‑Fi access for the thermostat system (know the network name and password)
- Your Google/Nest account email and password
- Access to your heating/boiler switch area where the Heat Link is mounted
- The thermostat and Heat Link serial/device identifiers if your notice asks for them
- Basic safety readiness: you can turn off power and confirm when it’s safe to work around wiring (or have an appropriate installer do it)
How the no-cost replacement process typically works
Most campaigns follow a similar pattern: verify device eligibility, receive the replacement, schedule installation (or confirm DIY steps if permitted), then pair and test.
- Verify your Heat Link details using the method Google provides
- Receive a replacement Heat Link shipped to your location (delivery windows vary)
- Install the new unit (often via installer support, depending on region and setup)
- Pair it back to your Nest Thermostat in the Nest app
- Test heating behavior across modes to confirm everything works
If Google offers installer options, follow those instructions—wiring mistakes are the most common cause of a “paired but not heating” situation.
Step-by-step: what to do when you receive a replacement notice
Use your notice as the source of truth. The fastest path is typically to confirm eligibility first, then prepare the installation environment so you aren’t doing setup twice.
1) Verify the device details
Locate the Heat Link identifiers exactly as shown in your notice. If there’s a mismatch (wrong home, wrong account, older unit), you may be asked to update details before shipment.
Rank #2
- ✌【Compatible Models】✌: for Nest Learning Thermostat (2nd Generation),T3007ES, T3008US，Nest Learning Thermostat (3rd Generation)，A0013，Nest Thermostat E，T4000ES。
- ✌【Compatible Models】✌Battery “+” pole aligns with the PCB markings, the connector keying is aligned, the connector is vertically inserted in place with a “click” sound; use the original adhesive to secure the battery without any looseness. Half insertion can cause unstable power supply and Wi‑Fi/Thread signal abnormalities. Reset the flex cable, as flex cable damage can lead to screen artifacts and touch malfunction.
- ✌【HIGH QUALITY GRADE A+ BATTERY】✌ The battery replacement has UL,CE and Rohs certification, uses Grade A+ rated battery cells. Every battery is manufactured and tested under strict quality control standards. Build-in microchip to prevent over-charging, over-discharging, short-circuit and over-heating. Multiple-protection for safer operation for both user and devices.
- ✌【HOW TO USE】✌ Using up all the power of battery for the first three times before charging, and then take a full charge,thus the battery can be reached the optimum effect of using. Please remember that its full performance and longevity is only achieved after 3 to 5 complete charge and discharge cycles
- ✌【WORRY-FREE WARRANTY】✌ If you are not satisfied with our product, please contact our friendly customer service through the "Contact Seller" feature, and we will reach out to you within 24 hours to solve your problem quickly and efficiently! So you can purchase our products without any risk
Double-check that the Nest app account on your phone matches the account listed in the Google message.
2) Confirm delivery and scheduling
Follow the delivery and timing instructions provided. If the notice includes an option to schedule an installer, choose a time when you can keep heating off during the swap and verification.
If you’re in a colder period, plan the swap so you can confirm heat within the same day.
The Tool Desk
Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →3) Prepare your home for the swap
Clear the area around the Heat Link location so the installer (or you) can access the wiring and mounting plate safely.
Make sure the thermostat can remain powered on long enough to complete pairing after the replacement.
4) Keep your wiring and app info handy
Many Heat Link installs depend on the existing wiring configuration. If your installer requests a photo of current wiring labels or junctions, take clear pictures before power down.
Also confirm your phone is logged into the Nest app and can access your home configuration.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Step-by-step: installer swap checklist
If you’re using an installer, treat it like a controlled change: power down, replace hardware, then verify end-to-end control. This reduces the odds you’ll discover problems only after the technician leaves.
Rank #3
- The Google Nest Temperature Sensor (2nd gen) makes it easy to manage hot and cold spots throughout your home[1]; put it in any room to get the right temperature, right where you want it
- It’s simple to set up and control in the Google Home or Nest app; just use the app to set the temperature a room should reach at a certain time of day
- The battery lasts up to 3 years, so you can put it on a wall, shelf, or wherever you want[2]
- You can place Nest Temperature Sensors in up to six rooms for maximum comfort; prioritize the temperature of one room, or create an average temperature across them, like bedrooms[1,3]
- The Nest Temperature Sensor (2nd gen) works with the Nest Learning Thermostat (4th gen), Nest Learning Thermostat (3rd gen), and Nest Thermostat E[1,4]
Power down correctly
- Switch off the heating control power as instructed by the campaign materials and local safety guidance
- Confirm the system is safe to touch before removing the Heat Link
Don’t rely on “it seems off.” Use the proper confirmation steps your installer follows.
Replace the Heat Link
Remove the old Heat Link and mount the replacement following the standard install steps for your thermostat model and wiring layout. If your boiler has specific wiring terminals or labels, match them carefully.
After installation, ensure the wiring is seated securely and the unit is mounted so it won’t loosen later.
Restore power and confirm pairing
Turn power back on, then open the Nest app and complete the pairing/adding process for the replacement Heat Link. Expect the thermostat to show a temporary status while it connects.
If pairing fails, the issue is usually connectivity or wiring—don’t just “keep retrying” without confirming the basics.
Verify heating behavior end-to-end
This is the part people skip, and it’s what prevents cold surprises.
- Set the thermostat to a temperature clearly above current room temperature
- Select a heating mode the system supports
- Confirm the boiler or heating system actually engages
- Then lower the target temperature and confirm the system stops
After the replacement: re-check settings and reports
Once paired, review the thermostat’s day-to-day behavior. Even if your schedules carry over, the control loop can behave differently until it’s fully validated.
Quick wins for a faster PC:
Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Confirm schedules
Check that your weekday and weekend temperature schedule still matches what you expect. If you use multiple target temperatures, verify each one triggers properly.
Rank #4
- 🏃 [HI-SPEED SUPPORT] BoxWave Cable Compatible With Google Nest Learning Thermostat - 3rd Generation. Supports Hi-Speed USB 2.0 DATA TRANSFERS! 💬 Includes limited 3rd party tech support for your device (up to 3 inquiries via messaging) - not affiliated with or endorsed by Google ⭐ *** PLEASE NOTE, GOOGLE NEST LEARNING THERMOSTAT - 3RD GENERATION DEVICE NOT INCLUDED ***
- 💰 [LOW COST] Why pay more? Get the DirectSync Cable for your device that functions just as well OR BETTER than your original cable for a fraction of the cost!
- ✌ [DUAL-FUNCTION] The DirectSync cable SYNCS and CHARGES your device. The DirectSync's dual-function design makes traveling convenient!
- 💪 [STABILITY AND STRENGTH] A SHIELDED cable provides PROTECTION to your cable to insure you get the most use and LONGEST LIFE out of your DirectSync. Features strong rubberized grommet strain reliefs to avoid kinks or splitting!
- 📒 [SPECIFICATIONS] Generous LENGTH so you don't have to awkwardly prop up your device "just so" in order to get a charge!
Test heating modes
If your system supports multiple modes (for example, heating vs. off), confirm each one reflects correctly in the app and physically changes heating behavior.
Check alerts and energy reports
Open the Nest app and check for any warnings related to connectivity or system status. If you see repeated error messages, resolve them before assuming everything is fine.
Troubleshooting when the main method fails
Replacement programs usually work smoothly, but real homes don’t behave like test labs. Here are targeted fixes for the most common failure points.
Google won’t match your device to a replacement
What to try:
- Confirm you’re using the same Google account that owns the Nest device in the Nest app
- Re-check Heat Link identifiers (serial/device ID) against the values Google requests
- Confirm your region is correct (some eligibility is country-specific)
- If you bought the device second-hand, verify ownership transfer is complete in your Nest app
If the notice doesn’t match, stop and contact Google support rather than proceeding with partial steps that could disrupt pairing.
Heat Link won’t connect to the Nest app
What to try:
- Confirm your phone is on a stable connection and the Nest app is up to date
- Restart the thermostat and Heat Link power cycle (as allowed by your installer guidance)
- Verify Wi‑Fi network name and password are correct and that your router isn’t blocking new device connections
- Check for network features that can interfere with device pairing (for example, aggressive “client isolation” or unusual authentication settings)
If pairing fails repeatedly, your wiring may be mis-seated even if the device powers on.
Thermostat shows an error or stops calling for heat
What to try:
- Confirm wiring terminals match the Heat Link install instructions and the existing boiler configuration
- Ensure heating power and boiler power are both on
- Test with a manual call for heat using a high target temperature
- Cycle power to the Heat Link and re-check status in the Nest app
If you’re not comfortable with wiring confirmation, stop and bring in the installer. Miswiring can cause behavior that looks like a software issue.
Wi‑Fi or router changes after the swap
Common scenario: the Heat Link connects, then later you change routers or passwords and the connection drops.
Free tools Windows power users keep installed
One-click scans. No signup required.
- Update the Wi‑Fi details in the Nest app if prompted
- Re-run the “Add device” / pairing flow for the Heat Link
- If you changed SSID or security mode, ensure the new network settings are compatible with Nest device pairing
Common mistakes to avoid
- Skipping the end-to-end heating test after installation
- Pairing without verifying boiler power and switch states
- Using the wrong Nest account during eligibility checks and pairing
- Moving too fast in cold weather and leaving the system untested
- Assuming pairing guarantees control (it doesn’t—wiring can still be wrong)
Alternatives if you need heating right away
If your heating is time-critical while you wait for replacement hardware or installation scheduling, you may need a temporary fallback.
Best Value
- 【LUXURIOUS DESIGN】 The design of the Wall Plate Cover was inspired by the design of the Nest Learning Thermostat; the plate is curved to act as a natural continuation of the thermostat's design. Elago Wall Plate perfectly creates a modern look that can't be beat and covers up the previous hole or mark.
- 【EASY INSTALLATION】 Plate cover can be easily installed to make your Nest Learning Thermostat looking better than before! No need to paint or do any remodeling work to install the plate.
- 【WELL-MADE WALL PLATE】 Made from hard, durable polycarbonate, the Wall Plate Cover is made to last and add a uniform splash of color to the thermostat's surroundings. Each cover is double coated to ensure longevity.
- 【HIGH COMPATIBILITY】 Our Plate cover only works with all generations of the Nest Learning Thermostat; 1st, 2nd, and 3rd generations are compatible. Not compatible with Nest Thermostat (2020).
- 【WARRANTY】 Our product comes with an extended 1 year breakage warranty. Rest easy knowing that we created this product to last a lifetime.
Use the boiler or heating system’s existing manual controls as permitted by your system design and local guidance, then return to the Nest system once the Heat Link is fully installed and verified.
FAQs
Is the replacement really free?
Google’s campaign is described as a no-cost replacement for eligible Nest Thermostat Heat Links in Europe. Your eligibility depends on matching device details and following the process in the notice.
Will I have to reinstall the Nest thermostat itself?
Most replacements focus on the Heat Link hardware. In most households, the thermostat remains in place, and you only complete pairing and confirmation steps in the Nest app.
Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteDo my schedules get lost?
Schedules typically remain tied to your Nest setup in the app. Still, you should re-check each schedule block after pairing to confirm nothing changed during the swap.
What if the installer says the issue is the boiler?
It can happen. The Heat Link replacement only addresses the control interface; if your boiler has faults, the thermostat may still be able to “call for heat” without the boiler responding. Use the end-to-end test and verify boiler operation.
Can I do the swap myself?
Some campaigns allow self-install steps, but many expect professional installation for safety and correct wiring. Follow the exact instructions in your Google notice to avoid voiding support or causing wiring problems.
Bottom Line
Google’s no-cost Nest Thermostat Heat Link replacement in Europe is meant to reduce the friction of hardware changes. The most important work you do is making sure eligibility is verified, pairing completes correctly, and heating behavior is tested end-to-end after power is restored.
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 reinstallOutdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchIf anything doesn’t behave as expected, treat it as a pairing or wiring verification problem first—not a thermostat “mystery.” Confirm device matching, check network stability, and verify boiler control with a clear heat call before you assume the replacement failed.
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.
