High-efficiency equipment does not automatically mean high performance. A brand-new multifamily building in New York City had all the bells and whistles: condensing boilers, multi-sensor BMS, and photovoltaics, among others. Unfortunately, the building was not able to reap any of the benefits. This presentation will answer the following questions: 1. Why is advanced technology alone insufficient to deliver energy? 2. Is it possible to obtain acceptable energy savings with less-advanced technology? 3. When does it make the most sense to use advanced technology? 4. How can I increase the probability of obtaining promised performance out of advanced technology?