(QA, 2.4)

• A Level 4 audit can be performed by an experienced energy advisor or the specialist
• REA is assessed during an on-site evaluation with an experienced Energy Advisor.
  • experienced - more than 100 home energy evaluations including at least 10 MURB evaluations when performed on a MURB
  • sub-contracting permissible when the SO does not have an experienced energy advisor
• acting as a mentor onsite
  • both collect data an model files independently
  • one blower door test for both
• files are compared and deficiencies noted with recommendations for remediation
  • may include additional training
• may also be undertaken by NRCan with a third-party auditor