just wondering if it is necessary to clean the a/c system. i mean i dont have any really really bad smell..but its just that my car is 2000 es300. and would be nice to give it a clean. so when they say a/c clean what do they mean. From doing a quick researching i am assuming a clean up of evaporator? if so then can i DIY and what cleaning would i need.
Also i have seen ppl spray stuff on the intake or vents to kill germs and odors. does that work?