homeassistant @lemmy.world rambos @lemm.ee 9 mo. ago

Turn on kitchen hood when naighbour is cooking

Hey peeps, I moved to a new appartment and my kitchen hood is connected to the same pipe (chimney) as hood from appartment below. The issue is smell coming from our hood when neighbour is cooking.

I was thinking about some kind of sensor (air flow or humidity or smell?) that can detect when neighbour is cooking and then HA would turn on our hood at the lowest speed.

I have no clue what kind of sensor would be suitable. I also need to figure out how to start our hood with HA (hacking with relay or buying some kind of smart kitchen hood is acceptable). Our kitchen hood is just regular Faber with 4 position switch for selecting fan speed.

Anyone have idea how to solve that issue? What sensor would be best for that?

Note that I have already installed 1-way valve (not sure whats the correct english word) and 3 different filters, but still sucks

Edit: I got some things going on, cant replay to all comments today and probbly tomorrow. Thank you all for input, Ill come back asap

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37 comments

The simplest thing would be a pressure or airflow sensor hard-wired to the switch for the hood itself.

Also consider instead of a 1 way valve installing a damper that only opens when your range good is turned on.
- Please explain more, both answers sound usefull, but not sure exactly what you mean. What kind of damper? Do you have example pic or link?
  
  The switch would be something like this. I think differential pressure between the inside of the duct and your kitchen would work.
  
  and any "normally closed" damper would work. Wired up such that when your range hood is switched on, it also switches the motor in the damper on so that it opens.
  
  Wow links are super usefull, thank you a lot!Damper seems like it could seal way better than a flap, I think Ill contact Fantech
  
  They're pretty standard parts so don't feel like you need to go with Fantech in particular, feel a little like I accidentally shilled for them a bit, just happened to be on their website (AFAIK they do make good stuff though). Glad that it helped and best of luck :)

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