Google may reimburse you for the cost of a replacement and professional installation if your unit is affected. 2. Where to buy a standalone Heat Link
If you aren't eligible for a free replacement, you'll need to look at secondary markets. Learn about Heat Link for Nest thermostats in Europe buy nest heat link
Before buying anything, check if your current Heat Link is part of the known Nest 3rd Gen recall/replacement program . Google may reimburse you for the cost of
Finding a Nest Heat Link on its own can be tricky because Google typically sells them only as part of a complete thermostat kit in Europe. buy nest heat link
You may be eligible for a free replacement and installation through Google's partner, BOXT .