What Type of Space Heater Uses the Least Electricity?

When choosing heating products for your home, some electric space heaters consume significantly less electricity than others, making them a better choice for energy efficiency and long-term savings. But what’s the best solution for you? The type of heater, its heating method, and the size of the space all play a role in determining energy usage. Understanding which options offer the best efficiency can help you make the best decision possible.
What Type of Heater Uses the Least Electricity?
There are several types of space heaters available, and each has varying levels of efficiency. Some of the most common options include convection heaters, ceramic heaters, oil-filled radiators, and infrared space heaters. Among these, infrared and oil-filled models tend to use less electricity because they provide sustained heat without requiring constant power consumption.
Of those two, radiant heaters like infrared models are often considered the most efficient electric heater for home use because they directly heat objects (and people) rather than warming the air. This targeted approach reduces waste energy heating and improves efficiency. Oil-filled radiators also consume less electricity since they retain heat for longer periods. Traditional fan-forced heaters, by contrast, tend to use more energy as they work by continuously circulating warm air.
With so many options, how do you choose? In most cases, using an energy-efficient space heater helps lower electricity bills while maintaining a comfortable indoor environment. What’s more, the best indoor electric heaters for large rooms often feature adjustable thermostats, programmable timers, and eco modes to optimize heating power. Ultimately, investing in an efficient heating solution not only provides consistent warmth, but also saves energy and reduces overall costs.
What Type of Space Heater Is Most Energy-Efficient?
By selecting an energy-efficient heater with the right safety features, you can stay warm while keeping electricity costs under control. The best options will minimize energy waste while providing consistent comfort, making them especially ideal for home heating. Two of the most efficient types are infrared space heaters and oil-filled heaters, each providing unique benefits.
Rather than heating the surrounding air, infrared heaters use radiant heat to warm objects and people directly. This makes them highly effective in targeted spaces, while reducing heat loss. Oil-filled heaters are different. These units gradually warm the oil inside, which retains heat for extended periods. Once heated, they continue radiating warmth even after turning off, reducing overall electricity usage.
If you need a safe space heater for overnight use, both infrared and oil-filled models serve as reliable options. Oil-filled heaters are often preferred for overnight heating since they operate silently and don’t have exposed heating elements. Many modern electric space heaters also include space heater safety features like tip-over protection, overheat shutoff, and cool-touch exteriors to minimize risks—it’s all about finding the right match for your needs and priorities.
What Is the Cheapest Type of Space Heater to Run?
When choosing a space heater, operating costs are just as important as the initial price. The most efficient electric heater for home use is one that provides maximum warmth while consuming the least electricity. Among the low-cost energy-efficient heaters for large rooms, two of the most economical options are infrared heaters and oil-filled radiators. Fan-forced convection heaters, while effective for quick heating, tend to use more electricity because they cycle on and off more often.
Of course, there are several factors in play. Lower wattage heaters use less electricity, but their heating capacity must match the room size for efficiency. Models with adjustable thermostats and programmable timers, on the other hand, help regulate energy use and avoid excessive heating.
Your insulation and room size also matter when selecting the right space heater. Well-insulated spaces retain heat better, reducing the need for continuous operation. Ensuring proper placement and using ceiling fans to distribute heat can also improve efficiency and lower expenses. Finally, to keep running costs low, regular maintenance is essential. Fortunately, infrared heaters only require minimal upkeep, while oil-filled radiators simply need to be kept clean for optimal performance.
How Much Does It Cost to Run a 1500 W Heater for 24 Hours?
Running a 1,500-watt heater continuously for 24 hours can add up quickly on your electricity bill. To determine the cost, follow this formula:
Power (kW) × Hours Used × Electricity Rate (per kWh) = Total Cost
A 1,500W heater converts to 1.5 kW. Over 24 hours, the total energy consumption is 1.5 kW × 24 = 36 kWh. Then if electricity costs $0.15 per kWh, running the heater for a full day would cost: 36 × 0.15 = $5.40 per day. But this cost can vary depending on local electricity rates and heater efficiency.
A high-wattage heater like a 1,500W model provides effective warmth, but can be expensive if used continuously. Running it daily for a month could cost over $160, making it important to consider more efficient central heating methods.
Find Other Heating Products Here at Surplus City!
If you're looking for an efficient way to heat your home while keeping energy costs low, a heat pump is a great alternative to traditional space heaters. Unlike portable heaters, heat pumps provide whole-home heating and cooling, making them a long-term, cost-effective solution. At Surplus City, we offer a wide selection of high-quality heat pumps at discounted prices, helping you get the performance you need without overspending.
Browse our inventory today to find the right heat pump for your home or business. If you need assistance choosing the best option, our team is ready to help!