Why is it so difficult to recruit in the air-conditioning industry now?

I install and repair the original air conditioner, and Haier has done it. I think the recruitment difficulties you mentioned are as follows:

The salary is too low, the work is dangerous and tiring, and there is no future.

In fact, to tell the truth, most installers of big-name air conditioners, including Haier and Midea, dare not compliment. Many of them are migrant workers like me, but I have changed jobs now. Besides, I am not in the poverty level. I resigned for the above reasons. After all, I have to make a living.