You don't typically have just 1 hive. It's usually a group of them.
You wouldn't need an HVAC per hive, but rather 1 HVAC for the swarm. Get a water mass, HVAC it to the right temperature, and then pump the water through the hives to maintain a good temp.
It'd be somewhat more expensive and you'd have to have enough insulation to make sure the water isn't prematurely cooling before reaching the hive.
Hives also tend to be really cheap. They are simply wood boxes. So you'd be competing with $100 wood box with $200 wood box and $1000 HVAC and plumbing.