Southern Maryland Oil, otherwise known as SMO, is synonymous with home heating oil, fuel oil, oil heat, heating oil, home heat, warmth, comfort, fuel oil tanks, as an alternative to heat pumps, hot water heaters, hydronic heating systems, kerosene, K 1, commercial fuels, diesel fuels, order fuel, boilers, oil delivery, oil service, oil heat service, furnaces, home delivery of heating oil, home...