This invention reduces the amount of carbon monoxide introduced by a combustion system to the atmosphere, by furnishing a systems approach to optimize the amount of oxygen to be chemically combined with fuel upon ignition of both allowing the correct amount of carbon to combine with the correct amount of oxygen thus fully release the thermal energy stored therein. By so furnishing the level of oxygen with carbon of the fuel, more carbon dioxide is produced thus proportionally reduces the amount of carbon monoxide released to the atmosphere. The invention provides a heating system that surpasses the net and gross efficiency performance of a natural gas burner.