Running a 500-watt ceramic heater costs between $0.07 to $0.14 per hour in the US, and about $0.12 to $0.17 per hour in the UK, depending on your energy provider.
500 Watts – On average a 500-watt heater will cost 9.81p per hour and £0.59 per six hours. 750 Watts – Electric heaters with this wattage will cost approximately £0.94 to run for 6 hours or 15.70p per hour. 1,250 Watts – You can expect to pay 19.63p per hour running a heater with this wattage.
A small 500W space heater running for 1 hour will use 0.5 kWh of electricity (500 watts x 1 hour / 1000 = 0.5 kWh). If used for 8 hours a day, it would use 4 kWh per day. A medium 1000W space heater running for 1 hour will use 1 kWh of electricity. Running for 8 hours a day it would use 8 kWh.
According to the U.S. Department of Energy, ceramic space heaters can convert 85-90% of electrical energy into heat. Ceramic heaters warm rooms 60% faster than fan heaters and consume 20-30 percent less energy.
Conclusion. So, after looking at the different types of electric heaters available, due to its lower power-output, halogen heaters are the cheapest electric heaters to run. Shop our range of Halogen Heaters here .
What Type of Space Heater Uses the Least Electricity? Low-wattage ceramic heaters (like the Ciarra 400W heater) use the least electricity while still delivering effective heat for small spaces. Oil-filled and infrared heaters without fans also tend to use less electricity over longer durations due to heat retention.
Heating On for 2 Hours a Day – Cost Calculator
If you operate your heater for 2 hours a day: With a 24 kW boiler → £1.68 x 2 = £3.36 per day. With a 30 kW boiler → £2.10 x 2 = £4.20 per day. And with a 35 kW boiler → £2.45 x 2 = £4.90 per day.
Disadvantages of Ceramic Heaters:
Uneven heating – Warm air rises, leading to hot and cold spots in the room. Limited lifespan – Fans and internal components wear out over time. Often only lasting only 5 – 10 years. Circulates dust and allergens – Not ideal for people with respiratory conditions.
Here are the most significant home electricity users:
A 1.3–2 kW ceramic heater running for an hour will typically cost between 19p–30p, depending on the electricity tariff (e.g., 27p/kWh). Based on average UK rates (~25 p/kWh), running a 1.5 kW heater costs roughly 37p/hour.
Your HVAC system is typically the biggest energy consumer, followed by your water heater and refrigerator. These appliances work hard to heat, cool and run 24/7.
Yes, a 500W electric heater can effectively warm a small home office (up to 100 sq ft 9.3 sq m) during winter when used as a supplemental heat source in an insulated space with minimal drafts.
It takes time for your home to warm up and cool down. If you're not sure how long it takes, try turning the heating on about 30 minutes before you need it. You should turn it off 30 minutes before you'll stop needing it.
A 1500W infrared heater costs between $0.18 and $0.24 per hour to run in the U.S., depending on your electricity rate. That equals roughly $1.80–$2.40 per day (if used 10 hours), about $55–$72 per month, or $650–$870 per year.
The Argument for Leaving the Heating On
This approach might seem convenient, as it avoids the discomfort of waiting for the house to warm up. However, most experts agree that it's usually cheaper to heat your home only when you need it.
The ceramic element reaches optimal temperature within seconds, allowing warm air to circulate almost immediately. Compared to oil-filled radiators—which can take 10 to 15 minutes to warm up—ceramic heaters deliver noticeable warmth within 1–3 minutes.
Ceramic heaters are energy efficient in smaller spaces. However, because they take longer to heat a space and retain heat after being turned off, they may use more energy initially compared to a fan heater – which can be turned off once the desired temperature is reached.
Electric heating systems and tumble dryers tend to be the most expensive electrical items to run because they use large amounts of power over extended periods. Other high-cost appliances include electric ovens and immersion heaters. Using these efficiently and during off-peak hours can help reduce costs.
The fix: Lower your home temperature to 68 degrees when you're home. Maintain comfort by adding extra layers of clothing – try fabrics like fleece, flannel and wool – and don't forget comfy slippers and blankets. If you can comfortably go a degree or two cooler than 68, your wallet will benefit even more!
Many people leave their kettle plugged in at all times, thinking it doesn't use much power. However, kettles with digital displays or standby functions can still draw electricity even when they're not actively boiling water. How to Reduce Standby Energy Waste: Unplug the kettle when not in use.
While both types rely on fans to circulate warm air, the heating element inside makes all the difference in how they function and what they're best suited for. Ceramic fan heaters offer a superior combination of fast heating, automatic temperature regulation, energy savings, and safety.
Leaving a heater on overnight is a common concern. Ceramic heaters, when used according to the manufacturer's instructions, can be safely left on while you sleep. However, you'll need to make sure the heater is placed on a flat, stable surface, free from obstructions around it.
Harsh working environment: If the heater is in an environment containing corrosive gases or dust, it may cause corrosion and damage to the ceramic surface, and accelerate the aging of the heating wire. The working environment needs to be improved to reduce the pollution of corrosive gases and dust.