If air moves through the insulation, what happens to heat gain/loss?

When air moves through insulation, it can lead to an increase in heat gain or loss. This is because the insulation's primary role is to slow down the transfer of heat between the inside and outside environments. If air penetrates the insulation, it can carry heat with it.

For instance, in colder weather, warm air can be lost through gaps or leaks in the insulation, leading to an increase in heat loss from the conditioned space. Conversely, in warmer weather, outside hot air can infiltrate the conditioned space, resulting in increased heat gain.

Thus, the movement of air through the insulation disrupts the effective thermal barrier it provides, ultimately enhancing the amount of heat that is transferred. As a result, the correct answer indicates that heat gain or loss increases when air moves through insulation.