New Technology Hho Gas Generator for Industrial Boiler Fuel Efficiency Improvement. Complete Combustion Boost: HHO generator injects HHO gas directly into boiler combustion chamber, increasing fuel burn rate while reducing unburned carbon deposits. 5-25% Fuel Savings & 30-50% Carbon Deposit Reduction: Field tests across 200+ industrial boilers show average coal savings of 12% and dramatic reduction in chimney black smoke and slag formation. No Chemical Additives Needed: Unlike combustion catalysts that require chemical feeding, our hho system uses only water and electricity to produce clean combustion gas-zero secondary pollution.