A complete list of active CS is here:
Are there any updates by now? I need to know standard specifications for HVAC devices. This Google Document does not really help. Are there any other resources I can consult on this topic? I am looking forward to becoming an HVAC specialist, and I want to know as much as possible about the industry. The shortage of HVAC techs is projected to continue, and I want to be aware of all of the specifications to become a good specialist who will always have a job. So, I would be grateful if you could provide me with some additional documentation on HVAC.