Mitsubishi
Mitsubishi mini-split with reverse-engineered serial adapter
Air Conditioners and Heaters · Climate
WorksLocal
1 report: 1 says it works.
Reported on r/homeassistant with ESP serial adapter.
What people report
| Integration | In Home Assistant | In Apple Home | What they said | Source |
|---|---|---|---|---|
| ESP serial adapter | Works Local | About $30 in parts; local, fully integrated, avoids $300 cloud moduleSaved copyI have a Mitsubishi mini-split system. Their online solution was $300 per unit and was locked behind a closed app. https://chrdavis.github.io/hacking-a-mitsubishi-heat-pump-Part-1/ Then I found this blog. This guy reversed engineer the serial protocol on the AC units. With about $30 in parts and a afternoon I had all my units online, locally accessible and fully integrated into HA. Its been running for 5 year and have had no issues. Excerpt saved from the Arctic Shift Reddit archive on 2026-10-23. | Reddit comment · 2026-08 |
Each row is one report from a GitHub thread, an integration’s docs, or r/homeassistant. Check the date and the linked source before you buy.
In ReReHome
Once Home Assistant’s HomeKit Bridge shares it, this device reaches Apple Home as a HomeKit accessory behind your Home Assistant bridge, so ReReHome shows and controls it like any other.
Identifiers
| Brand | Mitsubishi |
|---|---|
| Category | Air Conditioners and Heaters |