Viking Fuel Oil Company is a full service company offering heating, plumbing, and air conditioning services, along with home delivery of heating oil. Viking Fuel Oil remains family-owned, with a focus on customer service and community issues. Founded in 1933 by Israel Steinberg, son Lewis joined in 1970, building the business to over 10, 000 customers and a fleet of 12 oil delivery trucks. Viking, committed to community service, is a proud sponsor of the Hartford Symphony.. Gas Burners