Founded in 1903, Petro Holdings offers oil delivery service, as well as air conditioning installations and servicing, annual equipment inspections, boilers and furnace sales and duct cleaning services. It installs furnace, boiler, central air conditioning and hot water heater systems. It offers various price plans and budgeting options to manage energy costs. It also offers air conditioning systems and comprehensive equipment services. Its factory-trained technicians, 24-hour service and energy audit plans assist in avoiding system failure problems. It offers financing options for home equipment installations in partnership with AFC First. Its tank protection program guards against the leakage of heating oil. Petro Holdings is located in Stamford, Conn.