Most of the time the techs are reputable, as in having a good reputation for doing work cheap but do not use proper industry standard materials & processes. Ask them what is the difference between PAG & ester oil, & which they would recommend for the a/c system. Do your own research, not just take my word for it. We see alot of ppl doing repeat jobs due to these simple things, we sell the parts & we know what is going on & hear the bullsh@t excuses the techs give & the customer has no clue how complicated an a/c system is, no understanding of the different processes & materials. Can't blame them, they are paying for a job, good materials cost money. Just yesterday we sold a Tiida evaporator & the tech told me he is not servicing the a/c system....why? So that customer will be changing a compressor soon.
I want a money tree too!!!