I rent a small 1 bed flat to a young lady. When we bought the flat I told her I would take a look at trying to change her heating system with a view to getting her heating bills down (they are pretty high). The flat currently has 3 storage heaters. I spent quite a bit of time researching the options and the market and with a clear conscience I could not find anything that would guarantee any significant form of saving on her heating bills unless the output of each heater was reduced. This would present another potential problem as changing the heaters to lower output ones may not be sufficient to heat the flat to her satisfaction. I explained all of this to her but now she's like a dog with a bone and keeps asking me to review it again. I did. Last Autumn I spent a lot of time disappearing down this rabbit hole trying to understand what options are available etc. I spoke to a few electricians to get their opinions and still came to the same opinion that upgrading to new heaters wouldn't necessarily equate to any significant savings. The lady is convinced that having a timer and thermostat controls on new heaters would make them much more efficient. My understanding remains that storage heaters remain (in theory) the most economical form of electric heating on the market provided that a) they are on an off peak tariff and b) the user operates them correctly. Oil filled and panel heaters do not "waste" heat when you do not need it but I believe that this form of on demand heating may still wind up more expensive as day time tariffs. I am not particularly fond of storage heaters myself. She says that the heat runs out by the end of the day which I think is quite common unfortunately. Can anyone support the theory that non-storage heaters may be more economical? I feel obliged to perform full due diligence for her but I am reluctant to spend £ 3k on new storage heaters if she might only save £ 300 a year on bills.