Background
The exercise involves an existing office building with an older "dual duct" system installed. 

These are not very energy-efficient systems to begin with, and this system has not been properly maintained for some time, due to lack of maintenance staff and resources.

The Situation
It is a summer day. Building occupants are hot and complaining (again). The HVAC system is using way too much energy. Your challenge is to find and fix the problems with the system. 

You may select from a number of climate locations and you can specify the energy rates for a location. 

Hints are available if you have registered as an energy novice. Otherwise, you must identify potential opportunities from clues imbedded in data about current system status. 

Can you find all the cost savings? [Generally 33% to 50% for this operations and maintenance (O&M) exercise].
 

Your Challenge
Find and fix up to 8 problems with the system! 

Hints are available if you have registered as an energy novice. Otherwise, you must identify potential opportunities from clues imbedded in data about current system status. 

You may select from a number of climate locations and you can specify the energy rates for a location.

You can mouse-over parts of the system to see current system status, and substantial additional information is available by using the online personal digital assistant (PDA).  

Can you find all the cost savings? [Generally 33% to 50% for this operations and maintenance (O&M) exercise].