The HERO program (Home Energy Renovation Opportunity) provides California homeowners a financing option for energy-efficient home improvements, but comes with potential refinancing complications due to its super-priority lien status. This status may hinder homeowners from refinancing or selling their homes, as major mortgage lenders like Fannie Mae and Freddie Mac do not support properties with HERO loans. While the program aims to promote energy efficiency and has generated jobs, prospective buyers should be aware of its implications on mortgage marketability and financing options.