Nest Gen 4

Third party integrations
1

All, I’ve got two new Nest Gen 4 thermostats in the house. They are great and use the external temperature sensors. I want to bring them into Home Assistant. In my garage, I have the Gen 3 thermostat and was able to get that into HA using the Nest integration; however, the Gen 4 thermostats do not show up.

The Gen 4 Thermostats work ONLY with the Google Home application, not the other Nest only application. Is there any way to bring these into HA? I’ve heard of HomeKit integration, but have not gotten into that at all, so any tips would be appreciated.

Thank you,

E

2 Likes
2

Well, turns out I’m a dumbass. These things run on Matter itself. Integration works great:

On Android:

Google Home App > Select Thermostat > Setting Gear Icon > Device Information > Linked Matter Apps & Services > Link Apps and Services.

Easy.

2 Likes
3

This seems to indicate that it’s 100% local, is that true?

4

This is great, thank you for sharing this solution.

New nest devices usually take some time to show up over the SDM API unfortunately, but this even better that they can be used with matter directly.

5

Could you share what entities are exposed via Matter?

I’m curious which features are available via Matter vs. through the Google Home app.

1 Like
6

Would also like to know this. I want to know if I can select which sensor is used from home assistant.

7

I recently installed and configured one. I was able to successfully link it to both HomeKit and Home Assistant via Matter. However, in both platforms, only a climate entity is exposed. Additional temperature sensors (I paired five with the thermostat) and presets (comfort, eco, sleep, etc.) are not exposed. I’ve attached screenshots from HA for reference.

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IMG_57731320×2613 101 KB

8

Are you able to manually control the fan (fan without heat or AC)?

9

This worked perfectly, thank you for making it easy on me.

10

I do not see the ability to run the fan manually.

11

Thanks - guess it’s not worth upgrading from the Gen 3 to the Gen 4 for me then since that’s an important feature I use daily.

12

Well I might have been incorrect. I did not see the option for fan only from the dashboard, but now I see that it looks like you can do it from an integration. So I guess it comes down to how you might want to use this.

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I can try this out later and let you know if it works.

EDIT. should have said automation not integration.

13

Ok, it is possible to use fan only, I just got it to work with an automation.

image

14

Thanks for testing it!

15

Thanks for testing in automation. Question: how can you control the fan from dashboard?

16

Hmm. Mine lets me perform this Action, but the fan doesn’t start and I don’t get your fine blue “fan only” mode in the panel. Is this what your climate entity attributes look like?

hvac_modes: off, heat, cool, heat_cool
min_temp: 50
max_temp: 90
current_temperature: 69
temperature: null
target_temp_high: 78
target_temp_low: 69
friendly_name: Downstairs Nest
supported_features: 387
17

Sorry for not replying earlier. My automation no longer turns the fan on. I not sure if there was an update that broke the fan only mode. All of the other thermostat functions work.

18

and yes that is exactly what my entity attributes look like.

19

So, I’m about to purchase two new thermostats and I would love to hear that Nest is getting serious about Matter integration… any news about this???

20

I also would love to know if the 4th gen allows fan control. Sounds uncertain above.

1 Like