Updated April 23, 2026

Heater Cost Per Month (2026)

By Wattage & State โ€” 8 Hours/Day, 30 Days

A 1500-watt space heater costs $54 per month running 8 hours/day at the US average rate of $0.15/kWh. In Louisiana it costs only $32/month. In Hawaii it costs $115/month. Find your state and wattage below.

โœ“Based on EIA 2026 state electricity rates
Cost Table

Monthly Heater Cost by State & Wattage

Costs assume 8 hours/day for 30 days. Your actual cost depends on your heater's thermostat cycling and room insulation.

StateRate500W750W1000W1500W2000W3000W
Louisiana $0.09$11$16$22$32$43$65
Washington $0.10$12$18$24$36$48$72
Idaho $0.10$12$18$24$36$48$72
Tennessee $0.11$13$20$26$40$53$79
Texas $0.12$14$22$29$43$58$86
North Carolina $0.12$14$22$29$43$58$86
Florida $0.13$16$23$31$47$62$94
Georgia $0.13$16$23$31$47$62$94
Kentucky $0.13$16$23$31$47$62$94
Virginia $0.14$17$25$34$50$67$101
US Average โ˜… AVG$0.15$18$27$36$54$72$108
Illinois $0.15$18$27$36$54$72$108
Ohio $0.15$18$27$36$54$72$108
Michigan $0.16$19$29$38$58$77$115
Pennsylvania $0.16$19$29$38$58$77$115
Arizona $0.16$19$29$38$58$77$115
New Jersey $0.17$20$31$41$61$82$122
Maryland $0.17$20$31$41$61$82$122
Oregon $0.18$22$32$43$65$86$130
New York $0.19$23$34$46$68$91$137
Massachusetts $0.22$26$40$53$79$106$158
California $0.25$30$45$60$90$120$180
Connecticut $0.25$30$45$60$90$120$180
Alaska $0.27$32$49$65$97$130$194
Hawaii $0.32$38$58$77$115$154$230
Formula: Wattage รท 1000 ร— 8 hours ร— 30 days ร— $/kWh rate = monthly cost. Example: 1500W รท 1000 ร— 8 ร— 30 ร— $0.15 = $54/month.
Custom cost calculator โ†’Cost per hour โ†’Cost per day โ†’
FAQ

Heater Cost Per Month Questions

How much does a 1500-watt heater cost per month?
A 1500-watt heater costs $32/month at $0.09/kWh (Louisiana), $54/month at $0.15/kWh (US average), and $90/month at $0.25/kWh (California) running 8 hours/day for 30 days.
What is the cheapest state to run a space heater?
Louisiana at $0.09/kWh โ€” a 1500W heater costs only $32/month running 8 hours/day. Other cheap states include Washington ($0.10), Idaho ($0.10), and Tennessee ($0.11).
How much does a space heater cost per month in California?
At California's average rate of $0.25/kWh, a 1500W heater costs $90/month running 8 hours/day. A 1000W heater costs $60/month, and a 2000W heater costs $120/month.
Is $100/month normal for a space heater?
At high electricity rates ($0.25/kWh) with a 1500W heater running 12 hours/day, $100โ€“$135/month is normal. At average rates ($0.15/kWh) with 8 hours/day, $54/month is typical. If you are paying $100+ at average rates, your heater may be running continuously due to poor insulation or undersizing.
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