An exploration of the methods and skills required to perform energy audits of residential buildings. Topics include methods of energy conservation; elements and steps of energy auditing; energy conservation; insulation of walls, foundations and attics; door and window infiltration reduction; lighting and electrical efficiency; heating system analysis and efficiency; energy monitoring equipment; energy audit reporting; and sustainable energy systems. Students will shadow an expert energy auditor doing an actual audit. Field trips are required. This is the non-credit option of REE 126.