This is the second time I've used Grand Canyon Refrigeration services for my ac repair. I was very happy with the services Martin provided the first time and wanted to use his services again. My ac was blowing hot air and I called Martin on Thursday afternoon. He told me he will give me a call back to schedule an appointment when he gets the work order and will check his schedule, and more than likely it will be Saturday morning due to his busy schedule with other customers. I was find with that because we are in the middle of summer and they have very hectic schedule, so I wasn't expecting the same day or the next day service. He gave me a call on next morning and says that he will be in my area and if I was available he will stop by to check on my ac unit. About one hour or so he came, took my unit apart and found the problem and fixed it. I was very happy with his service once again. I highly recommend him for your heating and Air Conditioning needs. Nice guy and great to talk with and he will answer all your questions you have. Thank you Martin.