The code change is part of the state’s Title 24 regulations implemented July 1, 2014, and while the rule is not a complete ban on the use of bypass ducts, it greatly limits their usage in newly constructed residential buildings.
At its Dec. 11 meeting, the California Energy Commission (CEC) voted to push back the effective date for the 2013 Building Energy Efficiency Standards, also known as Title 24, from Jan. 1, 2014, to July 1, 2014.