DOE Weatherization Installer,
Part 1 - Fundamentals
Introduction to Weatherization
- Gain historical perspective of the Weatherization Assistance Program.
- Understand characteristics of the client base served by the program.
- Recognize that building science guides the selection of measures installed with program dollars.
- Understand the principles of cost-effectiveness and the savings-to-investment ratio (SIR).
- Recognize modern weatherization measures.
- The ways feelings and attitudes are expressed.
- Appropriate behavior and communication techniques to use at client homes.
- The importance of treating clients and their property with respect.
House as a System
- Understand the basic interrelation of home components.
- Understand that changes made now can create issues that emerge as damage years later.
Building Science Basics
- Understand the difference between thermal and air barriers.
- Know the proper location of thermal and air barriers.
- Recognize the driving forces of air leakage.
- Understand the connection between air leakage, energy waste, and moisture problems.
- Understand how air ducts affect pressure balances within the home.
- Understand the principle behind the blower door as a tool for measuring air leakage.
Blower Door Basics
- Name and understand the natural driving forces that cause pressure differences.
- Understand units of pressure and the measurement of air leakage.
- Be able to set up and operate a blower door to measure air leakage and conduct zonal pressure diagnostics.
- Understand the meaning and importance of minimum ventilation requirements (MVR).
- Be able to convert blower door readings to the total size of opening in square inches, and to cubic feet per minute (CFM) of air leakage under natural conditions.
- Understand the relationship between CFM50, CFMnatural, and air changes per hour (ACH).
Pressure and Thermal Boundaries
- Understand the difference between the thermal boundary and the air or pressure boundary, and the behavior and function of each.
- Know the proper location of the pressure and thermal boundaries.
- Know common sites for breaks in the pressure and thermal boundaries.
- Understand what is meant by inside and outside in terms of an air barrier, and how a blower door is used to determine that.
- Understand the health and safety issues related to combustion equipment.
- Know the basics of combustion equipment inspection.
- Recognize that different vent pipe materials are required for different appliances.
- Understand worst case combustion appliance zone (CAZ) testing.
- Understand and be able to conduct duct inspection.
- Understand the purpose of OSHA regulations.
- Know where to find guidelines for working with lead, mold, and asbestos.
- Know which homes require Lead Safe Weatherization practices and Certified Renovators.
- Know what a Materials Safety Data Sheet (MSDS) is and why it is important to keep nearby.
Materials, Tools, and Equipment
- Recognize the various tools and equipment associated with typical weatherization measures.
- Understand the importance of equipment maintenance and its effect on production.
- Understand the importance of a well-organized trailer and job site for productivity and safety.
Typical Weatherization Measures
- Recognize typical weatherization measures and associated guidelines.
- Know where to find a list of all measures approved in the program.
- Be able to name various building shell and mechanical measures, the tools required, and the purpose of those measures.
- Understand when incidental repairs are allowed.
- Understand the connection between pressure diagnostics and duct modifications.
- Know the guidelines for insulating gas and electric water heaters.
- Understand what is meant by base load measures.
Mobile Home Basics
- Discuss construction details and materials related to mobile homes.
- Learn the differences in pre- and post-1976 mobile homes.
- Explore standard weatherization priorities and order of operations for mobile homes.
- Discuss the design of mobile home forced air distribution systems.
- Hear about duct belly return modification.
- Learn about belly, wall, and roof insulation retrofit methods.
- Discuss diagnostic techniques to assess the integrity of ducts.
- See duct sealing and repair techniques.
- Explore where mobile home appliances differ from single-family versions.
- Understand what qualifies as multifamily (MF) housing.
- Be introduced to basic differences in diagnostics and modeling compared to single-family homes.
- Learn about differences in energy use between single-family (SF) and MF housing.
- Be introduced to common, cost-effective multifamily weatherization measures.
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