Came out today for a no ac call. Upon arrival the homeowner stated that when she turned the air on it blows warm air. The Revolv system model #Rsa1qd4m1rn24k, serial #Rsg181227563 was turned off. I called for ac and lower the temperature. I observed the system starting normally. There was no difference in the temperature split. I connected my gauges and noticed that the system was completely empty of refrigerant. I presented the homeowner with several solutions. The homeowner stated that she has had nothing but problems with this system since it was installed and wants to explore replacement. I connected Linda with chuds comfort advisor and he is 40 minutes out and on his way.