Be sure to look for the ENERGY STAR when shopping for commercial boilers
If you've decided that you need to purchase a new commercial boiler, ask your contractor for an ENERGY STAR certified commercial boiler.
Commercial boilers originally qualified for the ENERGY STAR label in December, 2016.
ENERGY STAR certified commercial boilers have a thermal efficiency of ≥ 94.0% and a turndown ratio of ≥ 5:1. They use 14 percent less energy than a standard model.