How Much Does a Portable space heater (oil-filled) Cost to Run? (2026 Calculator)
Typical setup: 1500 W · 8 h/day · $0.180/kWh
Daily
$2.16
Monthly
$64.72
Yearly
$787.43
Quick rate
Daily cost
$2.16
Monthly cost
$64.72
+$0.00 vs typical
Yearly cost
$787.43
kWh / month
360.0 kWh
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ad-after-calculator Quick answer
A typical portable space heater (oil-filled) uses about 1500 W and costs about $2.02/day or $60.48/month at the U.S. average rate of $0.17/kWh, assuming 8 hours of use per day. At the same rate, costs range from about $1.21/day (900 W) to $2.69/day (2000 W).
State explorer
Quickly spot cheapest, highest, and near-average monthly costs.
Top 10 cheapest
Top 10 highest
- Hawaii $143.24
- Massachusetts $112.18
- Maine $110.63
- California $109.04
- Rhode Island $108.50
- New York $102.13
- Connecticut $101.88
- New Hampshire $94.75
- Alaska $91.87
- District of Columbia $85.39
Cost by state (monthly)
At typical 1500 W and 8 h/day. Rates from our dataset (see methodology ). Open a state for a dedicated calculator page.
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ad-after-state-table Wattage range
| Level | Watts | Est. monthly @ avg rate |
|---|---|---|
| Low | 900 W | $38.83 |
| Typical | 1500 W | $64.72 |
| High | 2000 W | $86.29 |
Energy saving tips
- Seal air leaks and improve insulation to reduce run-time.
- Use thermostats or timers so the appliance only runs when needed.
- Combine this appliance with fans or shading to reduce demand.
- Set the thermostat a few degrees higher in summer or lower in winter.
- Use ceiling fans to feel cooler at a higher thermostat setting.
FAQ
- Most portable space heater (oil-filled) units fall between 900 W and 2000 W, with 1500 W as a typical operating value for estimates.
- Our estimates use 1500 W as the typical wattage, within a reported range of 900–2000 W.
- At typical use (8 hours/day at 1500 W), the estimate is about 12.00 kWh/day and 360.0 kWh/month at the U.S. average rate.
- With 8 hours/day and 1500 W, this appliance uses about 12.00 kWh per day.
- At 8 hours/day, the monthly estimate is about 360.0 kWh per month.
- Per hour, the typical draw is about 1.500 kWh (at 1500 W).
- At the U.S. average electricity rate of $0.17/kWh, the typical daily cost is about $2.02/day for 8 hours/day.
- At the U.S. average electricity rate of $0.17/kWh, the typical monthly cost is about $60.48/month at 8 hours/day.
- Running for one hour at 1500 W costs about $0.25/hour (using 0.17 $/kWh as the U.S. average).
- With typical use (8 hours/day at 1500 W), the estimate is about $2.02/day or $60.48/month at the U.S. average rate.
- The estimate is about 360.0 kWh per month, which corresponds to roughly $60.48/month at the U.S. average rate. Your real bill depends on your rate and runtime.
- Use energy-saving tips tailored to this appliance. For example: Seal air leaks and improve insulation to reduce run-time. — reducing kWh reduces the bill at your local rate.