As the 2012 and 2015 energy codes are implemented in more states throughout the US, it can be increasingly difficult to keep up and meet the requirements. This crash course on the 2015 Residential Energy Conservation Code will help you stay up to speed. What will change between 2012 and 2015? Which projects does this apply to, and how will this affect my energy models? WeÕll break it down by sections: Building envelope, thermal bypass inspection, HVAC Systems, ductwork sealing requirements and verification testing, before going over a few case studies: planning, modeling and verifying compliance.