Is your home working for you? We can find out! Homeworx Energy Performance assessment combines utility analysis, state of the art diagnostics, and over 20 years experience in residential energy problem-solving to provide effective air sealing, insulation, electric appliance and heating system efficiency solutions to existing homes.We are certified by the Building Performance Institute (BPI) and Colorado Governor’s Energy Office--you may be eligible for special rebates for energy improvements we can make on your home.