Preparing for Thermal Imaging Assessments

Before your Thermal Imaging Assessment:
(These steps are required for a full assessment with blower door and thermal imaging camera. Different preparations may be required for a custom or specialized test. Please ask the City Green office for details.)

  • Ensure your building envelope is intact (i.e. no holes in the windows, exterior walls, or ceiling)
  • Sweep your fireplace hearth and close the dampers and please do not have a fire 24 hours before the assessment. Air is drawn through your chimney into the house as part of the air leakage test. If you are concerned that soot might be drawn into your home, please consider having your chimney swept before your assessment.
  • Adjust your thermostat the night before the assessment to heat your home to at least 10°C (~20°F) above outdoor temperatures. Accurate thermal imaging requires a difference in temperature between indoor and outdoor temperatures of at least 10°C (~20°F). For the night before your assessment only, please ensure that your thermostat is set to 10°C (~20°F) above expected morning temperatures.
  • Open all interior doors to equalize interior temperature
  • Close all exterior windows and doors to prepare for the blower door air leakage test portion of the assessment and to to equalize interior temperature
  • Ensure your thermographer has access to all rooms in the home
  • Consider moving furniture (including wall coverings such as pictures) away from exterior walls at least three hours prior the assessment (while moving heavy furniture is not required, you will benefit from a more detailed assessment if the thermographer can view larger parts of the walls from inside your home)
  • Turn heating system off 1 hour prior to assessment
  • Have any construction or as-built plans of the building ready, if available

During your assessment:

  • Be on hand to answer questions about your home and provide access or move more furniture as needed
  • The thermographer might also conduct visual inspections as necessary, for example attic inspection, testing insulation levels in areas identified as potential deficient, etc