Hitachi PTAC Air Conditioning Services. , we are one of the leading HVAC companies offering premier Air Conditioning Repair services to New York ’s homes and offices. Be it your PTAC system or a Split AC, we carry out repairs for all kinds of units. With a team of experienced servicemen and professional tools, we ensure service reliability when it comes to your venture’s indoor environment. No matter what time of day or night, you can count on us to be there when you need us the most.