"Mick" wrote | We have just moved into a new flat and it has one of these | in the lounge but it always seems cold. Is there a recommended | room size for one heater of this size so we can see if the | developer has been cutting corners?
All developers cut corners :-)
Perhaps the developers 'assumed' you will have your own electric feature fire as the primary source of heat in the room and only sized the Dimplex to cover background heating.
1kW may be adequate in a well-insulated room to maintain temperature, but really doesn't have enough oomph to bring a cold room up to heat moderately quickly.
If the flat is all-electric then I'm surprised you don't have night storage heaters and off-peak hot water heating (unless the developer was *really* cutting corners on his install costs).
Owain