Which feature distinguishes radiant electric heating from forced air systems?

Radiant electric heating is distinguished by its method of heating spaces, which involves directly warming surfaces rather than relying on the circulation of warm air. This approach allows for a more uniform distribution of heat across a room, as radiant systems warm objects and surfaces, which then radiate heat into the space. This can help maintain a consistent and comfortable temperature without creating drafts or the stratification of heated air often associated with forced air systems.

In contrast, forced air systems rely on the movement of air to distribute heat, which can lead to uneven heating where warmer air rises and cooler air settles. The key benefit of radiant heating's ability to heat surfaces directly is that it can provide a more comfortable experience by reducing air movement and the discomfort that comes with it.

While other options mention aspects related to heating rates, air circulation, and costs, they do not capture the fundamental operational difference that defines radiant electric heating. The focus on the direct heating of surfaces is what sets this method apart from traditional forced air heating systems.