Written by

Tamatha Hazen

June 27, 2024

Edited by

Kristen Cramer

Fact-checked by

Tara Farmer

How much does a space heater cost to run?

The cost to run a 1500-watt space heater is around $0.26 per hour. Electrical portable heaters cost $2 to $3 per day or $60 to $90 per month in estimated running costs. Seasonal costs average $180 to $360, depending on the heater wattage, daily usage, and the average utility rates in your area.

How much electricity does a space heater use?

Space heaters are popular for providing supplemental warmth in homes and offices, but their energy consumption can vary significantly based on their wattage. The amount of electricity a space heater uses depends primarily on its power rating, typically ranging from 750W to 2500W for most residential models.

Assuming a typical space heater is around 1500 to 1800 watts, it will consume approximately 1.5 to 1.8 kilowatt-hours (kWh) of electricity per hour of operation.

To calculate the average hourly running cost, multiply that kWh by your local utility's electricity rate per kWh, as shown in the formula below:

How much can you save using a portable heater?

Wondering whether it is cheaper to run space heaters or central heat? A portable space heater can potentially save you money on heating bills compared to whole-home heating. Space heaters are more economical for heating small, well-insulated areas in milder climates. They can supplement your central heating, allowing you to stay comfortable without wasting heat on unoccupied rooms.

Does it cost a lot to run a space heater?

Portable space heaters are convenient for providing supplemental warmth but are more energy-intensive than other appliances you use at home. While a small TV or laptop charger may only cost a few cents per hour to operate, a typical 1500-watt space heater costs around $0.26 per hour to run.

Space heater cost factors to consider

When determining the cost-effectiveness of using a space heater, there are several factors to consider:

• Space heater size: Larger, higher-wattage heaters consume more energy and cost more to operate than smaller, lower-wattage units. Always choose a space heater size appropriate for the space you want to heat to avoid excessive energy consumption and costs.

• Electricity rates: The cost of electricity in your area can significantly impact the running costs of a space heater. Be sure to check your local electricity rates and factor them into your calculations.

• Usage patterns: How often and for how long you plan to use the space heater will greatly influence the overall costs. Using a space heater for extended periods or in multiple rooms can quickly add up.

• Insulation and heating efficiency: Poorly insulated homes may require more heating, increasing the costs associated with using a space heater.

• Supplemental vs. primary heat source: Using a space heater as a supplemental heat source to target specific areas can be more cost-effective than relying on it as your primary heat source for the entire home.

• Climate: Space heater costs will be higher in colder climates that need more heating while using a portable heater for supplemental warmth will cost less in milder areas.

Electric space heater FAQs

Is it cheaper to run a space heater or central heating?

In general, space heaters are more cost-effective for supplemental heating of small, well-insulated areas in milder climates, while central heating may be more efficient as a primary heat source for larger spaces, poorly insulated homes, or colder regions.

How can I reduce the running costs of a space heater?

To reduce the running costs of a space heater, consider using it in a well-insulated room, setting it to a lower temperature, choosing an appropriately sized unit for the area, and only running it when necessary as a supplemental heat source.

Can using a space heater save me money on my heating bills?

Using a space heater as a supplemental heat source can potentially save you money on your heating bills if you use it strategically to heat only the rooms you occupy while turning down your central heating system. However, relying on a space heater as your primary heat source may not be cost-effective, especially in colder climates, poorly insulated homes, or if you use an oversized unit.

Are there any safety concerns with using a space heater?

Space heaters can pose a fire hazard if not used properly. Always follow the manufacturer's instructions, keep heaters away from flammable materials, avoid using extension cords, and turn off heaters when leaving the room or going to sleep.

Energy-saving tips for space heater use

Since space heaters can be energy-intensive and costly to operate, it's essential to consider these and other home energy-saving cost strategies to minimize the space heater’s impact on your utility bills:

• Proper sizing: Choose a space heater with the appropriate wattage or BTU rating for the room size you want to heat. An undersized heater will run constantly, while an oversized heater will waste energy.

• Energy efficiency ratings: Look for space heaters with energy efficiency certifications, such as Energy Star. These models use less energy while providing the same level of heating, potentially reducing your operating costs. Some heaters also come with energy-saving features like eco modes or adjustable thermostats that can help optimize energy consumption.

• Insulation and weatherization: Improve the insulation and weatherization of the area where you plan to use the space heater. This will help retain heat and reduce the energy required to maintain a comfortable temperature.

• Thermostat settings: Set the space heater's thermostat to the lowest comfortable temperature, as each degree you lower the temperature results in significant energy savings.

• Zonal heating: Use the space heater to heat only the rooms or areas you are in, and close off unused rooms to prevent heat loss.

• Smart features: Use space heaters with smart features like Wi-Fi connectivity, geofencing, or learning capabilities that can optimize heating schedules and energy use.

• Maintenance: Regularly clean and maintain your space heater to ensure it operates efficiently and safely.