Some are more efficient than others no doubt, my house has storage heaters and they are completely useless. They are cold by the evening when we are actually home and need them. We bought 2 2kw oil filled radiators to use instead. It's a 1 bedroom flat and we have one in the bedroom and one in the front room.
We only need them on for an hour in the morning and then maybe an hour in the evening, they warm up really fast and hold the heat for quite a while even once tou switch them off.
We only need them on for an hour in the morning and then maybe an hour in the evening, they warm up really fast and hold the heat for quite a while even once tou switch them off.