Some jobs require you to go to a university and get nothing but theoretical knowledge at any given point in time, but others might make it somewhat necessary for you to look into acquiring a reasonable amount of practical knowledge as well in some way, shape or form. A big part of the reason why that is the case has to do with the fact that these jobs would necessitate you being in the field and working with your hands, and HVAC training is a big example of an academic trajectory where gaining hands on experience might be undeniably invaluable.
The thing about any HVAC program training in San Jose that you might want to go to is that it can help you to understand the inner workings of temperature control systems in no time at all. However, until and unless you actually take an HVAC apart and put it back together again yourself, suffice it to say that your theory knowledge would not do you any sort of good when you are out in the real world and trying to get clients who would actually be willing to hire you time and time again.
Most HVAC programs will make you understand how HVAC systems work, but it is up to you to get out there and obtain practical experience on top of everything else. No two HVAC systems are the same, so you need to familiarize yourself with the various makes and models so that there wouldn’t be any kinds of surprises that would get in the way of you being able to do your best while you are on your way to becoming a successful and wealthy entrepreneur.