Energy-Saving Electric Heaters: What Really Lowers Your Bill

Every winter, heaters are sold with stickers like "70% energy saving" and "zero bill". Here is the honest truth: every electric heater turns 100% of its electricity into heat. A 600 W heater uses 0.6 units an hour, whatever the box says. Real savings come from using fewer watts and putting the heat where you need it.

The lowest-watt heaters

Why spot heaters feel "more efficient"

A sun or rod heater warms you, not the air. So 600 W pointed at your sofa can feel warmer than 2,000 W trying to heat a big, draughty lounge. That is the real meaning of "energy saving".

8 ways to cut your heater bill

1. Use a spot heater for sitting areas instead of heating the whole room.
2. Switch to the low setting once you feel warm.
3. Close doors and curtains; block gaps under doors.
4. Use a thermostat — let the heater switch itself off.
5. Warm the bedroom before sleeping, then switch off.
6. Wear a warm layer — it lets you use a lower setting.
7. Avoid peak hours if you have a time-of-use meter.
8. Keep reflectors and grills clean so all the heat comes out.

Claims to ignore

• "Zero bill" — impossible for any electric heater.
• "70% saving" — only true compared with a much bigger heater.
• "Heats 200 square metres" on a 600 W heater — not realistic.

Browse all energy-saving heaters or read how much electricity a heater uses.