PTAC MASTER NYC. We provide personalized, high-quality air conditioning repair services to residents and businesses in New York and surrounding areas. Air Conditioning Repair in New York. If your Air Conditioner stops working or stops cooling your home quickly and effectively, then call PTAC MASTER NYC for 24-hour emergency repair service. Our skilled technicians can troubleshoot and fix your system quickly. Our No Hassle flat rate pricing gives you the confidence you need up front, before we start your AC repair.