I can’t tell if you’re agreeing with me or contradicting me.

If you agree, ignore this, if not, here’s the explanation:

Electric heaters are the only things that are 100% efficient. All other devices lose energy by putting off heat. A motor turns but coils heat up for example so that’s wasted energy. A heaters purpose is to convert electric energy to thermal energy. There’s no other form of energy that it puts off as waste.

Electric heaters turn electrical energy into thermal energy and are 100% efficient. So using less energy means it’s just not creating as much heat. It’s 1:1, and the different between radiator and fan+coils is the rate at which they heat.

Yep. Booth are 100% efficient and the only electric products that can be 100% efficient. The oil ones might be perceived as more efficient because they keep letting off heat once turned off, so the room doesn’t cool as quickly after use.