Yes, but your HVAC system is physical, while the mind is intangible to the author.
I think the mind is intangible. In fact, I believe it’s an insertion into our physical realm from the spiritual realm.
SCS Lewis said, and I paraphrase, “It is said that you have a soul. You are a soul. What you have is a body.”
If I may use another example, your body is like a desktop computer. The brain is the hard drive storage and all those background processes running, while your mind is the application that uses all of that. Yet the application technically doesn’t actually physically exist. When the computer is shut off, the application goes away. It is a virtual thing.
Of course, all analogies have their limits, but I think you know what I’m driving at.