It is complicated, but only to the extent it needs to be.
What I mean by that is that it's very flexible and powerful. Tools like Photoshop are intimidating as well, but must be in order to be so useful.
The upside is that we will try to help you. HVAC control is possible, however it's going to take some serious effort on the end user's part.
THe new version will be able to run independently for some tasks... not sure how it'd help your HVAC system to run independently though.