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.
IIRC they are _massively_ less efficient. Relevant Technology Connections video: https://www.youtube.com/watch?v=CnMRePtHMZY
https://en.m.wikipedia.org/wiki/Windcatcher
Perforated Double Skinned Exterior
Lots of cool tech from the past
Who benefits most from old methods and tech remaining a historical footnote, but the very people selling their new whiz-bang solutions for modern problems, which are themselves inherent to using their products and energy production and consumption supply chain?
In [1] he can not detect the Varroa within the hive, nevertheless he notice the behavior of the hive is as if it had it. In [2] the hive is already dead, then is when he find the Varroa. In the comments on [2], one beekeeper explains that when the combs are twisted the mites fall into the combs rather than onto the floor which is traditionally used to detect them ( The sugar [3] or CO2 technique to detect Varroa in any type of hive is recommended by other beekeepers in the comments).
[1] https://www.youtube.com/watch?v=iYKL7hrp23k HIIVE Confusion
[2] https://www.youtube.com/watch?v=YsdHyRdpfB0 All the bees dead - why Varroa was so treacherous here
[3] By comments on other videos about the topic, this needs around 200 bees which are placed in a container with grids to which sugar is added. When shaken, the Verroa falls and a count can be made. The topology of this hive makes it difficult to gather this amount of bees (in the video [2] one can see that the hive would have to be dismantled).