The SRU FLUE GAS CONDENSING ECONOMIZER heat recovery unit is designed to recover almost all of the waste energy from the forced draft heating unit, and turn it into usable heat. We guarantee 100% Satisfied with the Money Saved, CO2, Reduced Water Conserved, and our truly exceptional Service. Various Benefits include: Increased system efficiency (typically 90-95%) - Energy savings typically 10-15% - Short payback - Easy installation, low maintenance - Reduced particulate, water vapor and noxious gas emissions - Reduced stack noise emission - Operates over a broad range of equipment conditions - Computer-aided design (to ensure optimum sizing) - Computer-aided investment analysis - 7-year limited guarantee. Visit to know more: http://www.sidelsystems.com/products/products.html