Does air flow have an impact on insulation efficiency?

Air flow has a significant impact on insulation efficiency, making the correct answer "Yes." Insulation works by creating a barrier that reduces the transfer of heat between the inside and outside of a building. However, if air can move freely through the insulation or around it, the insulation's effectiveness can be compromised.

When unconditioned air flows through spaces where insulation is installed, it can carry heat away from the interior in winter or allow heat to enter during the summer, negating the benefits of the insulation. This is why proper sealing and installation of insulation are critical in ensuring that it performs to its intended capacity.

The incorrect choices suggest that air flow's impact is negated, conditional only on the seasons, or irrelevant altogether. In actuality, managing air flow is essential year-round to maintain energy efficiency and comfort in any climate.