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How Much Does Each Appliance Cost to Run?

Calculate your electricity cost by appliance — AC, washer, TV, computer, lights. See which devices are draining your wallet.

📅 Updated April 2026 Formula verified 📖 4 min read 🆓 Free · No sign-up

What Uses the Most Electricity?

For the average US home: HVAC (heating/cooling): 46% of the electric bill, water heating: 14%, appliances: 13%, lighting: 9%, electronics: 7%, other: 11%. Your AC is almost certainly your biggest electricity expense — a central AC unit running 8 hours/day costs $70-120/month at average rates.

How to Lower Your Bill

The biggest impact: set your thermostat 2-3°F higher in summer (saves 5-8% on cooling), switch to LED bulbs (use 75% less energy than incandescent), run the dishwasher and laundry during off-peak hours (if your utility offers time-of-use rates), and unplug phantom loads (chargers, standby devices that consume power 24/7).

Understanding Your Rate

The national average electricity rate in 2026 is approximately 16¢/kWh, but varies dramatically: Hawaii (35-40¢), California (25-30¢), Northeast (20-25¢), Midwest/South (10-14¢). Check your utility bill for your exact rate — it may include tiered pricing where usage above a threshold costs more per kWh.

⚡ CalcWolf Insight

The Department of Energy estimates that phantom loads (standby power) account for 5-10% of residential electricity use — $100-200/year for the average household. A smart power strip ($25-35) that cuts power to idle devices pays for itself in 2-4 months.

Frequently asked questions
How much does it cost to run an AC all day?
A central AC unit (3,000 watts) running 24 hours at 16¢/kWh costs about $11.50/day or $345/month. Running 8 hours/day costs about $3.84/day or $115/month. A window unit (1,200 watts) costs roughly 40% of that.
Do LED bulbs really save money?
Yes. A 10W LED produces the same light as a 60W incandescent. Running 5 hours/day, the LED costs $0.29/month vs $1.44/month for incandescent. Across 30 bulbs in a typical home, that is $34/month saved.
What are phantom loads?
Devices that consume electricity while plugged in but "off" — TVs, phone chargers, gaming consoles, coffee makers with clocks. The average home wastes $100-200/year on phantom loads. Use smart power strips or unplug devices not in use.
✓ Math logic verified against primary sources → See our verification process
Kevin Glover
Founder, CalcWolf · GLVTS · Blickr
All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →
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