I have also recently switched from Futurehome to Homey, and I can finally add all my devices and create advanced automations (flows). Honestly, I wish I had made the switch to Homey earlier! 
Regarding the FH thermostat/regulator, it seems like it’s not currently supported in Homey.
However, there are a few workarounds you can try:
1. Manual setup on the thermostat itself:
(May not work depending on the firmware on the termostat)
- Enter the settings by holding the (+) and (-) buttons together for 5 seconds.
- Go to Setting 14 (Device type):
- Value 0 = Regulator
- Value 1 = Thermostat
- To configure the regulator mode, go to Setting 15 (Regulator period) to set the cycle duration (in minutes).
- Example: If you set it to 30 minutes and the regulator is set to 50%, it will be on for 15 minutes and off for 15 minutes in each cycle.
2. Custom Flow in Homey:
- You can create a flow that operates the device as a power regulator.
Important: I strongly recommend adding a safety mechanism to the flow — for example, turning off the heating if the temperature exceeds 35 °C.
3. Virtual Thermostat (VThermo):
- Use a compatible temperature sensor along with the VThermo app.
- This lets you build a virtual thermostat to control the device based on your preferred temperature settings..
https://support.futurehome.no/hc/en-no/articles/5347913826077-Futurehome-Smart-Thermostat
