Joe TriesSmart thermostats compatible with Alexa
Yes, 12 smart thermostats in our catalog work with Alexa. The wiring in your wall decides more than Alexa does: most need a C-wire, and many older furnaces do not have one at the thermostat.
Almost every Wi-Fi thermostat works with Alexa, so compatibility is rarely the problem. The problem is behind the thermostat: most need a C-wire for constant power, and many older homes do not have one at the thermostat, so budget for an adapter or an electrician. Alexa handles voice control and simple routines; schedules, eco modes, and remote sensors stay in the maker's app. Nest thermostats reach Alexa through your Google account, which has worked for years but is a cloud-to-cloud path.
- Compatible, in our catalog
- 12 of 16 smart thermostats
- Work without any hub
- 11 of 12
- Need a hub first
- None
- Price range
- $57 to $280
Check these before you buy
- Pull your current thermostat off the wall (power off) and count the wires. A C wire, or a spare wire you can use as one, saves you an adapter. The maker's compatibility checker is worth the five minutes.
- Decide what you want Alexa for. Setting a temperature by voice works everywhere; changing the schedule or the mode usually means opening the maker's app.
- Heat pumps, multi-stage systems, and line-voltage baseboard heat each rule out some thermostats. Check your system type before you check Alexa.
Connects directly 6
The maker built this connection to Alexa. Some of these still need the maker's own hub, and the line under each product says so.
No hub needed.
No hub needed.
No hub needed.
No hub needed.
No hub needed.
No hub needed.
Connects through Matter 6
These join Alexa through Matter, a shared standard, so no maker's cloud sits in the middle. The ones that use Thread also need a Thread border router, a radio built into some smart speakers and hubs.
No hub needed.
No hub needed.
Matter over Wi-Fi; works standalone via the brand app, or add to any Matter controller.
Matter over Wi-Fi; works standalone via the brand app, or add to any Matter controller.
Matter over Wi-Fi; works standalone via the brand app, or add to any Matter controller.
Wi-Fi; native to Google Home with no hub. Matter (over Wi-Fi) lets other ecosystems control it via a Matter controller.
Not on this list?
That does not mean it will not work with Alexa. It means we have not confirmed a path for it yet, and we add connections as we confirm them against the maker's documentation. How we check
Already own some gear? Check what works together