After looking for ages we've found a flat which seems ideal. However I'm concerned about possible high heating costs.
The whole building is about 20 years old and there's no gas supply; EPC has it rated as C band (70) and recommends replacing the storage heaters with the high heat retention types. There's also no hearing in the main bedroom apart from a plug in heater and the flat faces the river so I'm thinking it might be windy/cold. It does have double glazing.
The flat is slightly less than we'd budgeted for so we probably could afford the upgrade. Would it still be quite expensive energy bills, do you think? I've only ever had gas heating before. Would it be enough to put you off an otherwise great flat?