Do your own heat pump HVAC work?

I’m lucky, I have the help of my neighbor, who wasn’t an HVAC technician, but was a plant manager for a large company. They sent him to school many times to learn different vocations so he could do the repairs the plant needed instead of hiring them out. This also included the HVAC requirements of a large plant, both big and small. I would concur with the above mentioned avenue of seeking out a small business person in your area who is licensed but has minimal overhead. There are many guys like my neighbor who are retired but still retain their certification to do small jobs for extra money. Al goes to the retirement communities and services their furnaces and A/C for minimal fees to help retirees stay warm and cool within their budgets!