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Home Assistant is open source home automation that puts local control and privacy first.
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Advice: Is the Tado wired thermostat V3 a good idea? (shop.tado.com)

submitted 6 days ago by mat@linux.community to c/homeassistant@lemmy.world

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Hi! I hope this post is on-topic enough. I've just moved into a flat in Germany and its thermostat has an incredibly loud clock ticking every second. My landlord allows me to replace it, so I looked for options and learned it uses a proprietary interface (Vaillant 7-8-9) and my only real option is from the brand Tado. I e-mailed them and confirmed their V3+ wired model is compatible... but costs 220€; way above my budget. However, if I set the site to Germany the price drops to 100€.

Before spending so much on a device (100€ is still a lot!), I'd love to check whether I can use it with Home Assistant. I recently installed it on a spare SBC and got the zbdongle-e working, ready to start connecting things. I found (cw: AI image) this blog post that says it works by having HA emulate Apple's HomeKit, does this mean it should work fine, regardless of the zbdongle-e? Should I be aware of any caveats to this approach, or to the Tado thermostat itself?

Thanks :)

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[–] mat@linux.community 1 points 6 days ago (1 children)

Thank you so much, this is very helpful information! What kind of features am I missing out on using it locally? Setting and measuring the temperature sounds to me like a pretty feature-complete thermostat. :) To clarify, I don't actually need any Apple hardware/software to use this, Home Assistant just pretends to be HomeKit connecting to the Tado USB bridge and provides free control from its interface?

[–] SteadyGoLucky@sh.itjust.works 2 points 6 days ago (1 children)

Yes that is how it works. But not all features are available through Homekit, most notably you can't set te state for Home/Away. That can only be set through the cloud API.

Be aware Tado just announced limiting access to the Api to 100 calls a day. Which is quite low. For full access you need a subscription for 5 euros a month. Perhaps read up on that before investing.

[–] mat@linux.community 1 points 6 days ago

Thanks for the warning, that sucks. I'm only interested in the local functionality, so this should not affect me I think!