The A/C froze up at 11pm last night, I called several companies that said "open 24/7" these were the only ones to call me back. After quick consult, noting that the system was thawed out and back up and running Al was willing to come by but told me without the system acting up it would be hard to diagnose, suggesting a service appointment to give the system a thorough checkup. I really appreciate the fact he could have ran up a charge for a visit, instead gave professional advice. Will be scheduling a checkup soon