For residential low-rise buildings the current code provision include compliance credits for high performance ducts and building envelope features. The size of credit depends on the action taken. For example simply designing ducts to Air Conditioner Contractor's Association guidelines or properly sealing duct joints provided lower levels of credit than having the HVAC system tested for duct leaks. To take credit for these mesure the installer and inspector must be trained and certified. Local governmental agencies can modify the state energy code to be more stringent when documentation is provided to the California Energy Commission.
Updates account for technology improvements, market penetration and improved processes.
Proposed changes are reviewed for a technical merit, cost effectiveness and environmental impacts. The full Commission adopts appropriate changes after a formal rule making proceeding. Public and stakeholder input are sought throughout the staff analysis stage and the formal rule making proceeding. Currently both a prescriptive package and computer compliance approach are available to determine compliance for both the nonresidential and residential energy standards. Manuals for both residential and nonresidential construction are available.