It started with our Mitsubishi heatpump. Someone on the internet had found a way to control it via Home Assistant. Sadly, this heatpump broke down in

πŸ˜Άβ€πŸŒ«οΈ Controlling the weather 🌦️ » Firesphere.dev

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2025-08-04 04:30:04

It started with our Mitsubishi heatpump. Someone on the internet had found a way to control it via Home Assistant. Sadly, this heatpump broke down in April... In July (yes, 10 weeks later!) we got a new one. A Panasonic this time.

A side-note, I recently started working at the New Zealand Meteorological Service (MetService)... So the title is a double joke...

Control over most heatpumps isn't that hard. You go and ask for a wifi module to be installed, create an account with the "cloud service" of whoever makes the heatpump, and away you go!

One little problem here, is of course, the cloud service of the manufacturer. Yet Another Cloud Account. Yet Another Spy. And I don't like that one bit. No sirey, I don't like it at all.

I was actually halfway writing a Raspberry Pi plus MQTT compatible version of the Python integration for a Mitsubishi Split Unit, when our heatpump broke, so I ehm... gave up. You can find my half-finished work on codeberg.

Our new heatpump, aside from having the capacity to heat up our lounge, which is nice during winter (did I mention we were out of proper heating for 10 weeks already? If not, well, it was cold!), is a Panasonic. And lo and behold, one of my favourite maker groups has a way to build a Home Assistant supporting integration.

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