re electric heating a given spend on kWh will warm a room up just as much regardless of the specific gadget eg fan vs oil rad, just perhaps in less time with a higher power
Isn't it about application? In say a living room where you spend the evening it stays warm for longer.
Whereas if you want to quickly heat your shed when you're working in there for a couple of hours a quick blast with a fan heater is probably the right call.
https://www.onlyradiators.co.uk/p/dq-heating-trv-corner-valves-pv
re electric heating a given spend on kWh will warm a room up just as much regardless of the specific gadget eg fan vs oil rad, just perhaps in less time with a higher power