Bradford White’s eF Series efficiency calculator app enables plumbing contractors and engineers to quickly and easily show customers the energy and cost-saving benefits of installing Bradford White eF Series ultra-high-efficiency commercial water heaters. The new app calculates reduction in runtime, therms per day and therms per year savings, as well as cost-per-day and cost-per-year savings. The app includes the options to email or print results. The app, along with Bradford White’s warranty check app and RightSpec cross-reference app, is available for free download at the company website.