Storage heaters and heat batteries both move electricity use into an earlier period, but the heat travels differently. A storage heater usually warms the room it sits in; a central heat battery may feed water, radiators or both.
The short answer
Choose room storage by room heat loss, control quality and the ability to retain heat until needed. Choose central storage by whole-system demand, distribution and hot-water requirements. Do not compare one heater with a whole-home store.
| Check | Storage heater | Central heat battery |
|---|---|---|
| Location | In each served room | Central plant position |
| Distribution | Heat directly to room | Pipework or hot-water heat exchanger |
| Hot water | Separate system needed | Some products can supply it |
| Failure scope | One room may be affected | Central unit can affect wider system |
Control and heat retention
Older storage heaters can release heat before it is wanted. Modern controls may improve timing, while a central store also has standing and distribution losses. Compare the actual product generation, not the category stereotype.
Electrical load
Several room heaters and one central store can both create substantial overnight demand. The supply and tariff window must support the charging pattern.
Building layout
Small, separated rooms may suit individual control. A wet system can distribute heat more conventionally but adds pumps, pipework and emitters.
Your next step
Map heat loss and existing emitters room by room. Price the complete hot-water solution alongside either space-heating option.
Sources
Primary and independent references checked by our editorial team.
- Economy 7 tariff guidance — Ofgem Checked 10 Nov 2026
- Energy storage options explained — Energy Saving Trust Checked 10 Nov 2026