Hi. I am about to buy an AC solution for our home, and I am doing research on what’s available. I want to go only with options with local control, and here is my current understanding and compilation. I am putting them into my wrong, messy, incomplete sheet here (I will accept suggestions/comments), based on merging various github Readme notes etc.
Conditioners from Gree group can be controlled locally via this integration. You might not even need the app to add the device to your network via this command.
Panasonic, needs custom dongle that seems to be hard to get assembled now and require quite some technical skills.
Samsung, via:
a) this
b) ESPHome thing for about $15. Seems that a lot of devices are supported, specifically those with NASA protocol. This one seems to support the most of the things, including setting everything, reading temperature, power, … on both individual as well as the outdoor units. From what I’ve seen, this one seems to be so far the best option for local control (it supports most of the Samsung units, supports most of the functions, and isn’t that complicated).
I can’t find many other brands that would have reasonable local support, but please, help me out!
The only products I know about which don’t use wifi are the Airzone units.
I don’t own any myself, and only learnt about them because their Mitsubishi model is supported in Z2MQTT.
From the looks of things, they make dedicated controllers using various protocols (zigbee, zwave, wifi & KNX), however they’re not cheap. Expect to pay around €200 per unit.