This 3-day workshop will cover steps in the evaluation of energy performance, comfort, safety, and structural integrity in homes being audited for potential retrofit. The curriculum emphasizes how the interaction of the different components in a home creates a larger system that may or may not work as designed. The instructor will cover the visual inspection and interview. Billing analysis, base-load measures, heat-load calculations, and different types of insulation will be introduced. And how to use the BPI technical standard to determine their effective R-value, diagnostic and blower door testing skills will be explored. The R-value/U value of doors and windows will be reviewed. Participants will gather information to evaluate, and together write a scope of work appropriate for the home.
- Understand the three types of heat loss (conductive, convective, and radiant).
- Learn common heat loss calculations used in sizing and determining building heat loss.
- Become familiar with the components effecting conductive and air-exchange heat loss in buildings (what can we change, control or improve).
- Understand principles of airflow.
- Be able to analyze energy bills and fuel-use history, and separate baseload from heat cost. Identify the universe of potential savings.
- Be able to calculate the Building Airflow Standard (BAS), aka Building Tightness Limit (BTL) or Minimum Ventilation Level (MVL), and understand where the requirement comes from (ASHRAE standard 62-89 and 62-2).
- Learn common moisture sources and indoor air issues that may affect health or building durability.
- Know and be able to explain the importance of aligning the thermal boundary and pressure boundary for maximum building envelope performance.
- Be able to measure CFM 50 using a blower door.
- Be able to identify priority air sealing opportunities.
- Be able to inspect attic insulation, determine effective R-value potential, and need for additional insulation.
- Be able to inspect wall insulation and determine potential for additional insulation.
- Be able to inspect under floor insulation and determine potential or need for additional.
- Be able to inspect floor insulation and determine potential or need for additional.
- Understand potential health concerns in interacting with exhaust systems and combustion appliances in tight houses.
- Be able to inspect existing windows and doors for fit and performance.
- Learn elements of a heating system inspection, with safety and efficiency.
- Learn elements of duct system inspection (identify location of filter, supply and return, sealing needs and insulation).
- Learn to assess adequacy of existing, or need for additional mechanical ventilation.
- Be able to write a scope of work using all the information gathered that maximizes the potential for improved building performance.
- Single point blower door test
- Combustion safety test
- Basic zonal pressure test
- Dominant duct leakage test
- Under door pressure test
- Measure flow of existing exhaust ventilation systems
Materials: pen and paper suggested.
BPI CEUs: TBD
Cost: $825 (General Public); $412.50 (Contractors Associated with a WA State Wx Agency); $0 (WA State Wx Agencies)
Instructor: varies - see scheduled courses
Location: varies - see scheduled courses
Registration URL: Event Link
Date: Jul 27 2011
End Date: Aug 10 2011