Temperature sensors at every building on a campus may not be economical in all cases. At the University of Michigan, with a campus footprint of several square miles and hundreds of buildings across 3 campuses, only 2 temperature sensors have been used for the past 25 years and rarely do building control experts ever see more than a one degree difference between buildings across that footprint. In our view, this does not justify a $5000 first cost for every building and a permanent and continual operations and maintenance load on the hardware, firmware, and software.
A 30-minute teleconference on this issue was held on August 15, 2014. The link to that videoconference is available at the link below. On this basis, comments on Addendum a were submitted to the ASHRAE 13 technical committee and were accepted into the Second Public Review Draft. An approximation of avoided cost (associated with avoided regulatory burden) is $620,000 annually to the University of Michigan Central Campus alone.