I have a 1995 Winnebago and the dash Air is blowing warm . I have installed a new ac compressor and expansion valve as well as the drier. I also e vac the system down an holds 28 inches of vacuum for over an hour with no problem . Recharged the system with 32 oz of 132A which is recommended by the manufacture . Pressure reading 55 psi low side 225 on the hi side . Still blows warm air ! Does any one have any other suggestions? Let me know Regards, John