There are advantages and disadvantages to different types of heaters.
Panel heaters and Wi-Fi-enabled floor heaters have aluminium elements that heat up quickly and maintain a low surface temperature.
Oil heaters take longer to warm up but also retain heat after they stop heating. One advantage of oil heaters is that they don’t “burn” the air as much, resulting in more comfortable air quality compared to other types of heaters—especially beneficial if there’s a lot of dust in the air.
In terms of efficiency, all electric heaters are inherently 100% efficient, meaning all the electricity they use is converted into heat energy. The control panel and Wi-Fi chip consume a negligible amount of power.