QUALITY CONTROL INSPECTOR Interpreting Infrared 1 WEATHERIZATION

QUALITY CONTROL INSPECTOR Interpreting Infrared 1 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – September 2012 eere. energy. gov

Learning Objectives INTERPRETING INFRARED By attending this session, participants will be able to: • Explain the benefits and limitations of infrared (IR) thermography. • Interpret infrared images as they relate to weatherization opportunities. • Demonstrate how to assess the quality of weatherization measure installation using IR images. • Utilize IR imaging in conjunction with the blower door to track infiltration and guide air sealing activities. 2 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – September 2012 eere. energy. gov

Infrared Capability INTERPRETING INFRARED • Cannot see through anything • Sees surface temperatures only • Cannot see color • Cannot see air 3 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – September 2012 eere. energy. gov

Insulation Settled in End Wall Bays INTERPRETING INFRARED 4 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – September 2012 eere. energy. gov

Missed Bay, Low Density Bays, Infiltration INTERPRETING INFRARED 5 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – September 2012 eere. energy. gov

Poorly Blown Cellulose in a Sloped Ceiling INTERPRETING INFRARED 6 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – September 2012 eere. energy. gov

Wind-Driven Infiltration at Dropped Soffit INTERPRETING INFRARED 7 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – September 2012 eere. energy. gov

Wind-Driven Infiltration INTERPRETING INFRARED Wind-driven infiltration over ceiling at eaves side of house 8 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – September 2012 eere. energy. gov

IR and the Blower Door INTERPRETING INFRARED Without Blower Door Kitchen Soffit With Blower Door Running Cabinets 9 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – September 2012 eere. energy. gov

IR and the Blower Door INTERPRETING INFRARED 10 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – September 2012 eere. energy. gov

Blower Door-Driven Infiltration #1 INTERPRETING INFRARED Infiltration at light fixture Infiltration at ceiling/wall junction 11 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – September 2012 eere. energy. gov

Blower Door-Driven Infiltration #2 INTERPRETING INFRARED Infiltration at bath ceiling fan/light fixture 12 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – September 2012 eere. energy. gov

Summary INTERPRETING INFRARED • IR imaging sees surface temperature only. • Interpreting IR requires putting images in context. • IR imaging cannot see through anything. • Images are easiest to interpret when there is a large temperature difference but always require a trained technician for accurate interpretation. • In conjunction with the blower door, IR imaging is a powerful tool for diagnosing infiltration and targeting air sealing activities. 13 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – September 2012 eere. energy. gov