Which Electric Heater Uses the Least Electricity in Pakistan: 6 Types by Units an Hour, From 0.4 Units

Electric heaters ranked by units an hour

An electric heater's watts divided by 1,000 gives its units an hour. The table ranks six common types on sale from their makers in Pakistan, lowest first, with the official price on 14 November 2026.

Look at the price column too. The cheapest heater to buy is not always the cheapest to run, and the cheapest to run is not always warm enough for a whole room.

Why a lower watt heater is not always cheaper

A 2,000 watt heater uses twice the power of a 1,000 watt heater, but it also gives twice the heat. If the bigger heater warms the room in half the time and then switches off on its thermostat, the bill can come out the same.

What wastes money is heat you do not use. That happens in three ways:

• Heating a whole lounge when one person sits in one corner.
• Running a heater with no thermostat all night after the room is warm.
• Leaving a door or window open so the warm air escapes.

So choose the type by the job, not only by the watts.

Each heater type, with its picture

These five models show the main types you can buy from their makers in Pakistan. Each has the maker's own photo.

Quartz heater: Gree GEH-800, Rs 9,900

Glowing quartz tubes send out infrared heat that warms the person in front of it, not the air. At 400 watts it uses 0.4 units an hour, the lowest of any heater here. Best for one person at a desk or on a sofa. It does little for a whole room.

Sun heater: Westpoint WF-5307, Rs 18,615

A dish heater with 500 and 1,000 watt settings, wide angle swing and overheat protection. Like the quartz heater, it warms people in its path. The swing spreads that heat across two or three people.

Sun heater: NasGas NAS-1200, Rs 8,500

A 1,200 watt dish heater with a timer and swing, and the cheapest heater here to buy. The timer is the money saver: set it to switch off after you fall asleep.

Fan heater: Westpoint WF-4307, Rs 12,325

A PTC ceramic fan heater with 1,000 and 2,000 watt settings. It blows warm air and heats a small room fast. Use it to take the chill off, then turn it down or off.

Oil heater: Gree GEH18-2500W, Rs 29,900

An oil filled radiator with 11 fins and a thermostat. It takes longer to warm up but keeps a closed bedroom warm all night, because the thermostat cuts the power once the room reaches the set level. It is silent and does not glow, so it is the safest choice near children.

A heat and cool inverter AC gives the most heat per unit

An inverter AC in heat mode does not make heat from the electricity. It pumps heat in from the outside air, so it usually delivers two to three times more heat for each unit than any heater above. If you already own one, use it in place of a heater.

The catch is the price. A 1 ton heat and cool inverter AC from Gree costs Rs 122,900 or more, as the Gree AC price list shows. That only makes sense if you also use it for cooling in summer.

Pick the right heater for your room

Match the heater to the space and the hours you use it. That is the biggest saving you can make.

1. One person, a few hours: quartz heater on low, 0.4 units an hour.
2. Two or three people in the lounge: sun heater with swing, 0.5 to 1.2 units an hour.
3. Quick warm up of a small room: fan heater for 15 to 20 minutes, then off.
4. Bedroom overnight: oil heater on its thermostat with the door shut.
5. Whole house, every day: a heat and cool inverter AC if you have one.

Keep the heater from pushing up your slab

A heater's cost depends less on its watts than on your monthly units. Two hours a day of a 1,000 watt heater adds 60 units a month. A 2,500 watt oil heater for 5 hours a night adds up to 375 units.

If your home used under 200 units last month, those extra units can push you into a higher slab. The electric heater cost per hour figures show what one hour costs at each slab. Check last month's bill before you buy, and pick the lowest watt heater that does the job.

Plug any heater over 1,500 watts straight into a wall socket, never a thin extension board. Before you buy, check the PSQCA licence, as our PSQCA heater check explains.

Common questions about heater electricity use

Which heater uses the least electricity in Pakistan?

A quartz heater on its 400 watt setting, such as the Gree GEH-800, uses 0.4 units an hour. A heat and cool inverter AC gives more heat for each unit.

Does an oil heater use less electricity than a fan heater?

Not per hour at full power. A 2,500 watt oil heater uses more. But its thermostat switches it off once the room is warm, so overnight use can be lower than you expect.

How many units does a 1,000 watt heater use?

One unit an hour. Two hours a day for 30 days adds 60 units.

Are sun heaters energy saving?

They warm the people in front of them directly, so you can run a lower setting. Each unit still gives the same heat as any electric heater.

Is a gas heater cheaper than an electric heater?

It can be, but it burns oxygen and gives off fumes in a closed room. SNGPL advises warm clothes instead of a gas heater.

How we verified this

What we checked and where we read it.

Last checked 14 November 2026. Prices, watts and features come from the makers' own stores: Gree on DWP Home, the Westpoint room heater collection on westpoint.pk and the NasGas electric room heater collection on nasgas.com. Units are our sums from the watts. The heat pump comparison is general guidance. Prices change without notice.