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Space heater: what does it cost to run?
Calculate the cost, compare common appliances, and get one practical saving idea — instantly.
Estimated monthly cost
$32.40$1.08 / day$394.20 / year
180.0 kWh used each month02 · Appliance-specific guide
How to estimate space heater correctly
The 1500 W and 4 h/day values are an editable example, not a claim about every model. This appliance is best treated as thermostat-controlled use.
What to verify
Most portable heaters draw close to their rating while heating, then cycle off if a thermostat reaches the target.
Formula
Power (W) ÷ 1,000 × active hours × electricity rate. This example uses 6 kWh/day, 180 kWh/30 days and 2,190 kWh/year.
Accuracy limit
The calculator prices the values you enter. It cannot know thermostat cycles, power modes, losses, appliance condition or the exact tariff on your bill; verify those inputs for a decision.
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A small change based on your numbers
Your energy coach
High-power appliances respond best to shorter use, timers, and efficient temperature settings.
Use it one hour less each day
$98.55Possible saving per yearTry a common appliance
One tap. Real numbers.
Compare before you plug in
Compare before you plug in
Two appliances can do a similar job at very different monthly costs.
Monthly difference$19.44
Space heater costs less