You are correct in that AC requires top notch assembly. Materials will probably be brought in from outside Mexico, but the welding of the piping, etc. for leak-free is not easy. If they move to Mexico, it will take some time for them to achieve their original American standard of quality.
They need to go back to freon since the ozone hole expanding was more junk science.
Pray America woke
If they move to Mexico, it will take some time for them to achieve their original American standard of quality.
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Even on US built AC there is quite a lot of room for improvement... I have had units go down because wires were an inch too short and rubbed through their insulation... housings for wire connection blocks allowed small animals to enter (had a lizard fried in a contactor) ... there is almost never any easy way to lubricate the bearings in the condenser fans so they go bad every 5 years instead of lasting the life of the unit... Simply analyzing common failures and making small improvements would put any company at the top of the heap.
You don't think Mexico has any professional quality welders available? Or that they're not capable? I just found your statement too conclusive for an idle opinion being posted on FR.