What temperature difference is required to identify air leakage using infrared technology?

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Identifying air leakage using infrared technology relies significantly on temperature differences between the interior and exterior environments; this contrast helps in detecting variations in thermal patterns that indicate leaks. A temperature difference of 10ºF is generally considered the minimum threshold necessary to obtain clear infrared images that will effectively reveal and quantify heat losses or air infiltration through building envelope components.

When the temperature difference is around 10ºF, the infrared camera can capture a significant contrast in thermal emissions, which is critical for accurate identification of problem areas. This contrast is essential because smaller temperature differences may not provide sufficient thermal variation for the camera to detect and highlight leaks clearly. In practice, a 10ºF difference allows for adequate sensitivity in detecting heat flow, thus facilitating effective air leakage investigations.

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