Is air sealing at non-ICAT recessed light fixtures necessary since they add heat?

Air sealing at non-ICAT recessed light fixtures is regarded as unnecessary because these fixtures do not generate enough heat to warrant sealing. Non-ICAT (insulation contact airtight) recessed lighting can be a source of air leakage, allowing conditioned air to escape and unconditioned air to enter, which can lead to energy loss. However, the primary concern with these fixtures is not their heat generation, as they are typically not intended for contact with insulation, which could pose a fire hazard.

In building performance assessments, focusing on sealing air leaks is crucial for improving energy efficiency and comfort within a space. Although it is important to ensure that all potential air leaks are addressed, non-ICAT fixtures do not necessitate air sealing due to their operational characteristics. In energy-efficient homes, the emphasis might be on air sealing almost everything, but the specific nature of non-ICAT fixtures means they are generally viewed as not requiring this treatment. In the context of new constructions, the issues with air sealing would arise primarily with ICAT fixtures, which are designed for contact with insulation and are often installed in ways that allow for minimal air leakage.

Therefore, the correct understanding is that air sealing at non-ICAT recessed light fixtures is not a necessary practice,