And yet, there is no way, no how any AI driven robot could do the job. The human experience in design, selection of materials and tools, fitment, installation, and testing is just amazing watching an AC pro do these thousands of complex task in the right order, with the right tools, and the right materials. I'm the amateur helping out this time, but the job is the same I did 40 years ago.
I've already argued above that I think plumbers will be among the first trades to be effectively replaced by AI and HVAC is subset of plumbing, so you would correctly guess that I don't think HVAC is some crazy magic AI won't be able to master pretty easily.
It comes down to this. Hopefully you read the Mythos link I shared above. One of the reasons, even today, something like 90 minutes into the AI revolution and with the bugs and hallucinations that exist today, it was successful in finding things that security experts and developers had missed (in some cases for a decade or more) is because it is way better at doing "thousands of complex task in the right order, with the right tools, and the right materials" than humans. Its attention doesn't waver. In the HVAC example, it won't shrug its shoulders and decide to substitute the part in its truck for the correct part to save a trip. It won't forget an important part of the service manual. It won't try to sell you a new system rather than replace a part, something the HVAC industry is pretty legendary for today. Think of it like this. Humans can build up experience and develop skills. A human with that advantage is a better HVAC tech and one without it. But humans also forget things and will run across HVAC systems they aren't familiar with to begin with. For AI, every site visit is an open book test because they will have access to everything, all the time, instantaneously.
35 years ago I did a project for Whirlpool to digitize all their service manuals and make them available to field support on location because it's unreasonable to expect a human to know everything about every product they have made. Today, that information still exists and, of course, anything manufactured in the past 20 years was digital first to begin with. All of that information is available to the AI and, again, humans generally have notoriously poor recall for specifics and details. This is part of the reason why it's expected to have a punch list of issues before accepting the keys and signing off on a new house, for example.
Even today, AI is pretty good at problem solving and process planning. When I wrote my previous note about plumbers I gave it a photo of my bathroom faucet and the inside of the cabinet/bottom of the faucet. It generated a 100% accurate list of the steps necessary to replace it. This list included the tools necessary, steps in the correct order and things to look out for. It did this based on one good photo (exterior) and one 10% blurry photo (interior, low light). I can vouch for the accuracy of its plan (including troubleshooting steps) because it was a faucet I had recently replaced. It even noted the water marks inside the cabinet that were the result of the leak that motivated me to replace the faucet a few weeks ago.
When reading your note, I asked it to give me a project plan for replacing my mini split and it successfully identified the steps, the tools and the materials needed. The AI part is already there. What doesn't exist is the robots to do the work. But, again, that's not a technological problem that's a money problem. The technology needed to build those robots exists today and someone pointed out that Elon Musk is moving aggressively in that direction.
Another example of problem solving. I've been collaborating with a company lately that designs enclosures. Today they are focused on small things that can be printed or CNC milled, but the business plan extends to other kinds of fabrication. I fed their AI the spec sheet for a single board computer I've been playing with lately and asked it to design me a project box. It read the 12 page document (attached), figured out what parts were relevant, ignored the watermarks, asked me about power requirements, noticed that the board has a handful of pins available for external circuits, asked me about my intentions and finally designed a project box that was customized for my project and SBC. Which I then printed.
I would argue this is at least as complex as the HVAC example. Maybe a little more so in the aggregate. Some parts are more complex, some less. But at least in the same ballpark. And it is already working.
I'll leave the economic and cultural implications for the philosophers, but it's hard to deny the reality of the technology.