this post was submitted on 01 Sep 2025
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I have a pretty simple smart thermostat without many fancy features. Every Spring and Fall I tell myself I should set up some kind of system where if the outdoor weather is good enough, maybe I dial back the heating / cooling, maybe send myself a text to open windows, etc.

Small example: I normally keep my house at 72 in the summer, but if it's up to 76 or so outside, it'd be nice if the thermostat turned off the cooling. I could manually turn it back on if I have guests over, etc.

I'm sure some of this logic would be easy to code myself, but wanted to check out what anyone else is doing first.

Using home assistant.

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[–] yaroto98@lemmy.world 7 points 21 hours ago* (last edited 21 hours ago) (1 children)

I have one where I put a door/window sensor on a window and anytime that window is opened it turns off the HVAC, then when closed, turns it back on.

I tried once to setup a notification to open the windows if the weather was nice, but I'd never gotten to work quite like I wanted, and so I turned it off.

[–] Ebby@lemmy.ssba.com 3 points 21 hours ago* (last edited 14 hours ago)

I have the same sensors, but on many windows. If I have windows on either side of the house open simultaneously and there is a favorable temp difference outside vs inside, an automation turns on an air exchange fan. If they are closed, I use advanced heating control