FLIR Home Energy Audit Tools

What tools do Home Energy Auditors and Home Inspectors use? Shopping for the right Home Energy Auditor or Home Inspector can be a timely process. Beyond their certifications and experience, you should also consider the types of tools they use to perform their tasks.

Here’s a video with Tom O’toole of FLIR Systems and Flemming Lund, a certified Energy Auditor & Home Inspector, talking about the tools used in the various phases involved in a home energy audit.

Blower Door Inspection for Air Infiltration in a Remodeled Cottage

By Tom Coffey, Infrared Training Center 

A small cottage (700 sq. ft) outside of Knoxville, TN was completely remodeled from January to March 2010. It was an existing cinder block structure with no insulation except ½ inch of airspace between the nailers and the block wall as well as the empty block core. The R value of existing building walls was approximately 2.97. After the remodel an R-value was calculated and determined to be 12.6

2 x 4 studs were used to build the interior walls the insulated with 4” of backed fiberglass bat insulation. Old windows were removed and new double pane sash type windows installed during the remodel.

The house was depressurized to approximately 50 Pascal and allowed to equalize for 30 minutes. A thermographic scan was performed after the equalization period. Infiltration was found around the sash windows where the top and bottom pieces join in the corners of the windows.

There was some expected infiltration around the front door which was missing a sweep on the bottom of the door. Also infiltration was found at the attic access.

All of these small problems are easily correctable and will be done as time permits.

The installation of the blower door took approximately 30-45 minutes. Reaching the right depressurization took another 30 minutes and the IR scan took another 45 minutes. For a house this size, allowing for the small footprint I did not do an air exchange calculation. The purpose of this exercise was to determine if the house remodel and adding insulation was sufficient to keep the house at a comfortable level during East Tennessee summers and winters. It was determined during the remodel process that R-13 insulation in the walls and R-19 insulation in the ceilings would be sufficient for the weather conditions in this area of the country.

Using IR With a Blower Door

Free White Paper – Click Here to Download

Thermal imaging has become an invaluable tool in the specialized field of energy auditing and building diagnostics. By itself, an infrared camera only tells half the story. The use of a blower door in conjunction with a thermal imager can help you locate areas of air infiltration throughout the building envelope that are not necessarily going to be detected under the natural stack effect.

This complimentary paper, originally presented at InfraMation 2009, explains how working with a blower door helps building thermographers get better, and more consistent, results in the field.

To learn more about InfraMation 2015 (and possibly submit a paper presentation of your own for consideration), please visit www.inframation.org