Energy-Saving & Low-Watt Heaters
Worried about the bill? These energy-saving heaters run on 250 to 600 W — less than a third of a 2,000 W fan heater. They warm you directly and quickly, and many work on UPS and solar backup on their low setting.
Energy-Saving & Low-Watt Heaters: how to choose the right one
In short
- No heater makes heat from nothing: every watt you use becomes heat. "Energy saving" really means using fewer watts and putting the heat where you need it.
- Low-watt sun and rod heaters warm the person, not the whole room — so 300–600 W feels like much more.
- A thermostat (on fan heaters) saves power by switching off when the room is warm.
- On UPS or solar, stay at 250–600 W and check your inverter's spare capacity.
- Every heater here costs about Rs 1,000–4,500.
How to stay warm on a smaller bill
Heater marketing is full of claims like "70% energy saving" and "zero bill". The honest truth is simple physics: a 600 W heater uses 0.6 units an hour, whatever the box says. What you can control is how many watts you use and where the heat goes.
That is why low-watt spot heaters are the smartest choice for sitting areas. A 300/600 W sun heater pointed at the sofa keeps you warm for a fraction of the cost of heating the entire room with a 2,000 W heater. Close the door, wear a warm layer, and use the low setting once you are comfortable.
For bedrooms, a fan heater with a thermostat, used to warm the room before bed and then switched off, is far cheaper than running a big heater all night.
Our low-watt heaters
How much electricity does a heater use?
| Heater | Power | Units per hour | Approx. cost per hour* |
|---|---|---|---|
| Handy / mini heater | 400 W | 0.4 | Rs 24 |
| Sun heater (low / high) | 300 / 600 W | 0.3 / 0.6 | Rs 18 / 36 |
| Rod room heater (1 / 2 rods) | 400 / 800 W | 0.4 / 0.8 | Rs 24 / 48 |
| Big dish / stand heater | 900 – 1,000 W | 0.9 – 1.0 | Rs 54 – 60 |
| Fan heater (high) | 2,000 W | 2.0 | Rs 120 |
| Oil radiator (elements on) | 2,000 – 2,500 W | 2.0 – 2.5 | Rs 120 – 150 |
Lower watts = fewer units. *Example at Rs 60 per unit. Your real rate depends on your slab, tax and time of use. Thermostat heaters switch off and on, so they often use less than the label.
Ways to cut your heater bill
- Pick the right type: spot heater for sitting, room heater for bedrooms.
- Use the low setting: switch to low once you feel warm.
- Close doors and curtains: keep the warmth in the room.
- Use a thermostat or timer: let it switch itself off.
- Warm the bedroom, then switch off: do not run it all night.
- Mind peak hours: on time-of-use meters, peak-hour units cost more.
Check how many spare watts your inverter has after fans, lights and the fridge. A 300 W sun heater or 400 W handy heater is usually fine; a 2,000 W fan heater or oil radiator is not. Remember a heater drains batteries quickly at night. More: heater on solar or UPS.
Keep reading
01What is an energy saver electric heater?
A heater that uses fewer watts — usually a 300/600 W sun heater, a 400/800 W rod heater or a 250–500 W fan heater — and puts the warmth where you sit.
02Which heater uses the least electricity?
A 250–400 W heater on its low setting: the Maxx MX-113 (250 W), a sun heater on 300 W, or a 400 W handy heater.
03Do "70% energy saving" heaters really save 70%?
No heater turns fewer units into more heat. Savings come from using a lower-watt heater and warming only where you sit.
04Can I run these heaters on solar?
Many solar and inverter setups can run a 300–400 W heater during the day. Check your inverter's spare capacity.
05Is cash on delivery available?
Yes, with free delivery over Rs 3,000.








