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Borescopes: Eye Spy

July/August 2013
This article originally appeared in the July/August 2013 issue of Home Energy Magazine.
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June 30, 2013
Remember ET’s finger? That could be seen as an advanced version of a borescope—ET could touch things and cure them. The borescopes I am describing here are cameras with illumination on flexible goosenecks that can be stuck in places that you wouldn’t be able to see otherwise, like wall cavities, or cooling coils in HVAC systems, or down pipes to look for restrictions. You might want to look into a cooling coil to check airflow blockage. You might want to look into the wall cavity to assess the condition of existing insulation or look for leaks or find a wire or pipe. The trick with a borescope is to know what you are looking at. A mass of cobwebs can look like old insulation. You can spend a lot of time puzzling out a piece of wood that turns out to be the wall. The thing is that you are looking through one tiny eye that is not connected to your head. It is often difficult to know the orientation. The focus on these units is fixed, and for some of them you have to get just the right distance away to get a ...

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