BURR RIDGE, IL — Weil-McLain® has announced that its Ultra® Oil, WGO, WTGO, and SGO residential oil boilers are now certified for use with biofuel blends up to 100% (B100). Weil-McLain tested and validated its boilers with Beckett and Carlin burners designed with seals and components to handle higher biofuel blends. “Weil-McLain boilers that are B100 certified are designed to operate on this blend of biodiesel fuel with the approved Beckett and Carlin burners,” said Mike Boyd, Product Manager with Weil-McLain. Federal Tax Credit Available in 2025Homeowners upgrading to Weil-McLain’s B100-certified oil boilers may qualify for a federal tax credit of up to $600. Driving Sustainable Heating“Our new B100 certified boilers mark an important milestone in our commitment to a sustainable future,” added Boyd.