wingnut771
Honorary Master
Yes, fan and oil heaters are the shittest in efficiency terms.It doesn't heat the room, it heats the stuff in the room, including you, which is what you want. Adjust it to face you.
If you want to heat the room, an aircon wins for power efficiency...
You want to heat air? Use a heatpump inverter aircon.
You want to heat you? Use an IR heater. It feels like the sun.