A human with experience can do without AI the job a lot faster than someone without can do it with. The expert HVAC tech can get the wrench of the fitting and have the job done faster than the novice. The novice will take longer to follow directions to get the right wrench; then they have to figure out how to get it on - something the expert does automatically isn't easy; then turn it the right direction... The expert also knows the correct "feel" so they won't over tighten, while still having less leaks to fix (both will check, but the expert will find less)

If I'm in my remote cabin I'm still faster than calling a tech, but in my city I can hire someone to do this who is faster. (though perhaps not cheaper)