How Oil-Filled Radiator Heaters Work - Heat Circulation Explained #64615 (License: Personal Use)

The diagram depicts an oil-filled electric radiator with vertical fins and a control panel, demonstrating convection-based heating. Red arrows indicate warm air rising from the top of the unit, while blue arrows show cooler air being drawn in from the floor level, creating a continuous circulation loop. The unit sits on casters and is plugged into an outlet, emphasizing portability and ease of use.

Used on HVAC educational pages, product comparison sites, or energy-efficiency guides to explain passive heating mechanics; matches user intent to understand how space heaters work or choose quiet, safe heating solutions.