Willys Air Conditioning Inc. (PTAC Experts) is a full-service heating and cooling contractor specializing in the design, installation and servicing of PTAC, central air conditioning, heating, ventilation systems, makeup air systems and commercial refrigeration systems in New York City. Our HVAC NYC team has been serving the Manhattan for over 15 years. We serve the entire Manhattan, Brooklyn, Bronx, Long Island, Staten Island, Queens, NoHo, Soho and Williamsburg in New York.