With AC, there are a lot of possible causes to only blow warm air:
refrigerant level low due to leak
weak to failed compressor
restriction in expansion valve
restriction in the condenser
condenser fan not working
climate control panel fault
temperature blend door actuator not working
faulty ambient temperature sensor
faulty ac pressure transducer
no power to the compressor
As you can see there are several potential causes and will need to be professionally diagnosed starting with the ac high and low pressures, and checking the compressor operation, then go from there
Please remember to rate service using the rating page so that I may receive credit. Thanks
If for any reason, you can't rate my answer OKAY, GOOD, or EXCELLENT today.
Please reply and let me know why, so I can help more/better.
All follow up responses are FREE, after completing the required rating
Please note that if you have a subscription service, you still are required to rate service, however you are not charged again. This is just so that your expert is credited for their time and services.Thank you.