Hi, I m Juan Pablo from Argentina, and I m in trouble with air conditioning. The AC system started failing by gas leaks through the ac condenser, I ve changed de part, but AC doesn t work at all. There s no gas leak in the circuit, so I m thinking that the evaporator is not working at all. I ve changed the pollen filters, and it still not working. Does somebody can tell me if the evaporator can be replaced, and if it s very difficult to replace it. Thanks.