Economiser Coils – Maximize Heat Recovery, Minimize Fuel Costs Steamtech Boilers offers high-performance Economiser Coils designed to enhance boiler efficiency by recovering residual heat from flue gases. Installed in the flue gas path, these coils preheat the boiler feedwater, reducing overall fuel consumption and improving thermal efficiency. Built from premium-grade seamless tubes and engineered to withstand high temperatures and corrosive conditions, our economiser coils are ideal for industrial steam boilers across sectors like food processing, chemicals, paper, and textiles.