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Home Assistant is open source home automation that puts local control and privacy first.
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Thermostat recommendations? (lemmy.today)

submitted 2 days ago by paequ2@lemmy.today to c/homeassistant@lemmy.world

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What are people on Lemmy using for their home thermostats?

I'm in the US with a packaged HVAC system (cool+heat) and was looking to buy a new thermostat, but I wanted to make sure it's highly compatible with Home Assistant.

Ideally, I'm looking for something that speaks Matter over WiFi or Thread. I would like to mainly control it via HA. Everyone in my household are Android users (not totally sure if that's important?). Also, it would be nice if I didn't have to connect it to the cloud.

I was considering the Meross Smart Wi-Fi Thermostat, which seems to check all of the boxes. I was wondering if anyone here uses this thermostat.

Another one that seemed interesting was the Siterwell Smart Thermostat GS368M, although this was just announced very recently and who knows when/if it'll go on sale.

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[–] Mjpasta710@midwest.social 5 points 2 days ago (3 children)

I use esphome & a 4 channel relay to engage the HVAC stages. I built a virtual thermostat in home assistant and tied it to a Shelly e-paper temperature sensor. I can move it to other sensors in the home if/when needed or carry the sensor around the house. It's not a huge place though.

I have the old school thermostat still on the original mount point in case of catastrophic failure and for aesthetic.

[–] porksnort@slrpnk.net 3 points 2 days ago

This is the way. The ‘smart’ is already in home assistant. You need a temp sensor (or a few) and the actuators to trigger the HVAC equipment. There are numerous ‘smart thermostat’ integrations already and modules that handles the PID math for those who want to roll their own.

Any third party product with code you can’t inspect or replace is less secure. In this case, there is no compelling case for a commercial product.

[–] paequ2@lemmy.today 2 points 2 days ago

I built a virtual thermostat in home assistant and tied it to a Shelly e-paper temperature sensor.

This is interesting... I hadn't even considered that possibility...

[–] Mjpasta710@midwest.social 2 points 2 days ago* (last edited 2 days ago)

example link there's a lot of options.

Mounted it near the HVAC, got one in a premade case.

*Another link with the case, I don't work for them, it's what I landed on:

https://www.athom.tech/blank-1/4ch-inching-self-lock-relay-for-esphome