Ralph P. Sita, Inc. is a locally owned and operated, full service, residential, industrial, and commercial heating, ventilation, and air conditioning contractor with over 41 years of experience in the industry. Ralph P. Sita, Inc. is a union contractor with personnel trained and supplied by the Steamfitters Local Union #602. Our mechanics have years of experience and are equipped with the most up to date training and tools of the trade. We design, install, and service pneumatic controls, mechanical equipment, heating, air conditioning and ventilation systems, and offer full service, commercial and residential, preventative maintenance service contracts.