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The article focuses on the complexness of Heating Ventilation and Conditioning (HVAC) design which becomes a challenge in design process. It relates the cases study of knottiness encountered in the construction design of the Valley Performing Arts Center in California State University. It provides information on the use of such design as well as notes the things to consider on the construction process. Moreover, the project is expected to be completed by early 2010.

The article reports that Val Verde Unified District has installed the Quiet Climate 2 of Geary Pacific to reduce the overall decibel levels of the classrooms in Perris, California. According to the author, the HVAC unit provides operating sound levels that are 20 to 35 times quieter than a standard wall-mounted heat pump. He added that the installation has helped reduce the overall ambient noise level from 58 to 37 decibels.

The article highlights the different renovations and upgrades to school buildings to save energy up to 70% in California district. According to the author, co-founder of M/E Systems Engineering Engineer Keith Ritter has installed the AERCO KC1000 and Benchmark 2.0 boilers for it can deliver thermal efficiencies up to 99%. He added that the upgrades that improved service in the classroom consisted of new transformers, switchgear and distribution panels.

Discusses how the problem on heating, ventilation and air-conditioning system of the Capitol Bank Center in Sacramento, California was resolved. Overview on the problem; Individuals responsible for solving the problem.

Describes the heating, ventilation and air conditioning system project in a 22-story office building in San Francisco, California. Updating and retrofitting of direct digital controls based on the BACnet network; Contractors in the project; Estimated amount of energy cost savings per year.