It is not an elaborate system. With a sniffer, you could point to a leak that way. If you put freon with dye in it, you could use a UV light to see the leak.My husband's air condition won't hold coolant,put new seals in any idea of the prob its a 2022 full cab all weather?
They haven't tried that. The sniffer from 2 reputable dealers doesn't show a leak,they went ahead changed rubber seals still didn't help. They have it in the garage now so hopefully will figure it out,this time. Thank youI second Lost1Wing. I have used both methods on numerous automotive A/C systems but have had better success finding very small leaks with dye and UV. If you are losing your freon charge in one day, you have a large enough leak that the sniffer should easily pick it up. Most common locations are fittings and joints. However if you still cannot find it, it is time to gain access to evaporator, as it is probably hidden in a plastic compartment.