Was a bad move to try to hire an HVAC professional online

He asked if I wanted him to come back to work on my HVAC but I told him no way, he did enough damage

You definitely have to exercise caution when you choose to hire the services of a professional listed online. I contacted a guy to work on my HVAC system not so long ago. I thought he was a genuine HVAC professional, at least he told me that he was. He worked on my HVAC system for what seemed like a cheap price. I had to learn my lesson that you actually get what you pay for. This guy did a horrible job on my HVAC system and I called to complain later when my HVAC was having more issues than it had previously. He admitted on the phone that he might have messed up. I pressed him and asked what kind of HVAC professional he was and he admitted that he wasn’t technically a certified HVAC professional. I was shocked and worried because I thought my HVAC warranty might be void thanks to him. He told me to relax and said that there wasn’t an easy way to prove that a non-professional worked on the HVAC, and besides he said he was a professional. He asked if I wanted him to come back to work on my HVAC but I told him no way, he did enough damage. I ended up calling a real professional and he didn’t notice anything out of the ordinary, but he was able to get my HVAC working just fine. In the future, I won’t be calling some shady HVAC worker to help me with my HVAC repairs. I’m sure all of us have made similar mistakes in life though.
Digital thermostat