Do oil filled radiators use a lot of electricity?

All 1,500W space heaters cost the same to run — about $0.15-0.20 per hour depending on your electricity rate. However, oil radiators are more efficient because the oil retains heat, so the element doesn't run constantly. Over time, this means lower electricity use than ceramic or fan heaters.

Are oil radiators safe to leave on overnight?

Oil radiators are the safest space heater type for overnight use. They have no exposed elements, low surface temperatures, and the oil retains heat during cycling. Always use one with a thermostat and tip-over protection, and keep it away from bedding and curtains.

Best Oil Filled Radiators 2026