Hitachi PTAC Service NYC Has Been Faithfully Providing Professional HVAC Services to the Residential and Commercial Communities In New York. We’re locally Owned and Operated with a True commitment to helping our community grow stronger. No matter what time of day or night, you can count on us to be there when you need us the most. All of our air conditioning services are available in Five Boroughs, NYC, Queens, New York, Manhattan, Bronx, Staten Island, Long Island, Suffolk County, Nassau County.