PRECISE CONTROL FOR RETROFITS & NEW FURNACES Designed for use in high temperature environments such as furnaces, boilers, incinerators, power plants, fired heaters, and kilns, UPC-Marathon Combustion Solutions significantly lower fuel consumption, maintenance costs and emissions. The benefits of controlling combustion are immediate and calculable. A 2% reduction in excess air in a combustion process lowers fuel consumption by up to 4%! With the same excess air reduction, NOx emissions can be reduced by up to 40%. With our zero and span capabilities, your company may even be able to meet your environmental regulatory obligations.