A FLIR T420 Thermal Camera, a Trash Bag, and a Snowstorm


Getting an energy audit for you home is a relatively new concept. This process will highlight the problems in your home that you can address for more energy-efficiency. Using a thermal image camera is the key to “seeing” the problems. This blog shows the tools function.

Ivy Tools Blog

FLIR T420 Sidewalk Snow Sidewalk gathering heat, while snow is piled four feet deep on each side

With 15 inches of snow on the ground, and more still hanging in the air, I decided to hit the streets with the FLIR T420 infrared camera.  Given the ongoing nature of events, I took the only reasonable course and wrapped a white trash bag around the T420. For as anyone in a Level 1 thermography class will tell you, infrared light passes easily through certain thin plastics. Yet here’s the rub, and I must confess the question escaped me as a student: How exactly is one supposed to use the infrared camera in a trash bag?

FLIR T420 House Roofs House roofs piled deep with snow

One of the hallowed maxims of thermography training is “Always make sure the camera is in focus.” Here the FLIR T420 has a distinct advantage. Autofocus at the push of a button ensures…

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