I’m nearly there with the heat pump features and will be moving on to adding support to boost the fan next. That is the last change I expect to make apart from things that might come up in final testing. If anyone wants a preview of the heat pump work, here’s the image.
But don’t bother spending a lot of time doing serious testing because when I add the fan boost feature, it’s going to require doing the testing all over again, as those changes could introduce new problems. So unless you want to see the heat pump in action, you might as well wait test everything all at once.