… Reduction (KW/H) 12% Water Bill Reduction $ 21% Water Consumption Reduction (M3) 23% N2 Gas Bill Reduction $ 22% N2 Gas Consumption Reduction … Environment Heller design team is continuously working to develop tools that save energy and that are … Heller recently moved away from Styrofoam cups, providing paper replacements as well as promoting a “Bring your own coffee cup” program.