Engineered thermal fluid heaters can be custom designed when specifications differ from those of the standard heater designs. Dirty fuels, bio‐mass fuels, and API‐560 requirements are all reasons to think about a custom engineered heater design. Our engineers have years of experience in designing custom thermal fluid heaters to meet very specific application requirements. If you think your application needs more than a standard package system, contact one of our application engineers to find out how Sigma Thermal can help you meet your process goals with compromise.