Popular high-efficiency boilers tend to be more expensive at installation, but lower utility bills pay customers back over time. In fact, the U.S. Department of Energy estimates that replacing an older boiler system with a new, high-efficiency one can cut fuel bills by up to 40%. However, to protect that investment, high-efficiency boilers need to be properly maintained, just like you would with a car.
During a tune-up or maintenance visit, technicians should clean and inspect the heat exchanger for wear and tear. (Courtesy of Weil-McLain)