Why Use Economizer in Boiler: Boost Efficiency & Cut Costs

An economizer in a boiler is a heat exchanger device that preheats feedwater using waste heat from flue gases, significantly improving energy efficiency and reducing fuel consumption. By recovering heat that would otherwise be lost, economizers can enhance boiler performance by 5-15%, lowering operational costs and carbon emissions.

Industrial boilers equipped with economizers can achieve thermal efficiency gains of up to 10%, as reported by the U.S. Department of Energy. For example, a typical 100,000 lb/hr steam boiler with an economizer can save over $50,000 annually in fuel costs. Economizers also help meet environmental regulations by reducing NOx and CO2 emissions. Modern designs, such as condensing economizers, further increase efficiency by capturing latent heat from water vapor in exhaust gases. Leading manufacturers like Cleaver-Brooks and Babcock & Wilcox highlight economizers as essential for optimizing boiler systems in power plants, refineries, and manufacturing facilities. Investing in an economizer ensures long-term savings, compliance, and sustainability.