I have been using HA to manage my heating system for the past 5 years (gas combi boiler, temperature measurement in each room and wireless TRVs).
I am now planning to replace the existing heating system with an air source heat pump so I am thinking about the most effective and flexible way to control that.
For my existing system, the advantage of using HA instead of a traditional single point thermostat is that I can measure temperature at multiple points throughout the house, turn on the heating if any individual area is cold, turn off the heating when all the rooms are warm, and control the heating in individual rooms with the smart TRVs.
I believe with an ASHP that the heating strategy will be different due to the lower flow temperatures, and generally heat pumps will run constantly to maintain a comfortable internal temperature, using weather compensation to influence the flow rate.
Any of the suppliers I am considering will be offering a proprietary control system with the heating pump they install, and I understand this is likely to be the best way to control the ASHP, so I don’t want to roll my own solution for the sake of it. However, I like being able to monitor and control my existing heating in more detail with HA, so I would like to choose a control system for the ASHP that will integrate with HA and allow me to tune the heating control and add automations if it is appropriate to do so. Essentially, I would like to avoid installing a control system that locks me out of using HA, in case I decide that I want to use it later.
I would be very interested in the experience of anyone else that has been down this route, and any recommendations they have about ASHP controls and future proofing for HA.
And just to throw something else in the mix, I am also looking at the possibility of installing solar panels and a battery, so those are other things I would be interested in integrating with HA.
Thanks!