I have integrated my Mitsubishi A/C with HA (without cloud) …
Mitsubishi Heavy Industries (MHI) air conditioner
- SRK25ZS-W controlled with ESP (https://github.com/ginkage/MHI-AC-Ctrl-ESPHome)
- SRK20ZS-W controlled with ESP (https://github.com/ginkage/MHI-AC-Ctrl-ESPHome)