Pretty green to HA, I am going to document how I managed to get it working if I ever did.
I have a Daikin AC, this has a issue where when set to a Temp 20°C (68°F) it will keep heating above the set temp to 24°C (75.2°F) I think this is an issue with the size of the room.
Solution: Have a Broadlink RM4 send a IR command to the AC when the temp in the room has reached the threshold set to turn off. Turn on when 2°C below target and off when 1°C above. May need to setup something to prevent it from constantly sending commands.