Kirkton House 2000W Oil Filled Radiator [Black or White] + 3 Year Warranty - In Store Only

2kwh @ approx £0.30 per kWh costs approx £0.60 per hour to run.   Tariffs vary from supplier to supplier and prepayment meters cost more so can’t be to exact with my figures but will be in this ballpark.  Hope this helps.

Yeah. Electricity is around 4x more expensive than gas and a gas boiler is about 80% efficient, while electric heaters are 100% efficient. So in effect electricity costs about 3.2 times more to run than gas for the same heat output.

If you can turn off radiators, it's far far cheaper to use gas central heating than electric heaters, but you may of course not have gas (very rural), be forced to use electricity (apartments) or be heating a garden office. I use these oil heaters in my shed, but never in the house unless the gas is ever cut off. (edited)

The problem with portable gas fires is the amount of moisture they release into your home as they burn gas. Check out the amount of condensation which unless dealt with and removed (e.g. by running an expensive dehumidifier) will start to cause issues with damp and mould.

Trust me, we used to use one!

"...Using a paraffin or bottled gas heater (for five hours)
hinckley-bosworth.gov.uk/inf…d/2 (edited)

I checked three in South Birmingham and, like you, only saw one label and none had stock Two had them delivered but the third one I don't know about as the kid I asked was clueless about pretty much everything.

The second store said they had some in but had all gone.

The final store the guy said he'd had 18 arrive and they all sold yesterday. This morning he'd rung all stores in driving distance and none had any. He said that last year they were selling them but they were not fast movers and weeks later he still had some. Consequently, he reckoned Aldi had ordered fewer and that no more would be delivered. A when they're gone, they're gone thing.

So, if you bagged one you've done well. If you haven't got one already, it seems you're not going to unless they suddenly get their hands on more to ship to stores.

Which 4?

Ring the store in the hope that someone answers it and if they do they are in possession of some facts.

I would say no , as the oil radiator stops warming the oil up when it reaches the desired temperature and the fan heater is constantly using energy. If they were both on full blast all the time then they would be using the same energy.