141 Spring/Summer Promo Sale!If you have been thinking of adding an EnergyLogic waste oil furnace to your line-up of solid performance […] 13 Jun, 2013 in EnergyLogic Equipment News tagged Energy Logic / EnergyLogic furnaces / used oil boilers / used oil heaters / used oil recycling / waste oil boiler / waste oil furnace / waste oil furnaces / waste oil heater / waste oil heaters by Nuera