Savemax Boiler is the conventional three pass smoke-tube design Oil / Gas fired steam boiler having an internal water cooling furnace area. The superior features make it the ideal boiler. It's a standard three-pass internal furnace smoke tube design, with flue gases within the tubes and water outside the tubes in the shell. The atomization of fuel is required for the burning of oil and gas in a furnace. Because the fuel entering the burner in bulk is either a liquid or a gas, it must be divided into tiny droplets so that every last particle may be burned without leaving a trace.