Appliance operating cost methodology
Version 1.0.0 · ACTIVE · released 2026-06-20
Formula
kWh = watts × hours × dutyCycle × quantity / 1000; cost = kWh × ratePerKwh (state-average basis)
Default assumptions
| rateBasis | STATE_AVERAGE |
|---|---|
| daysPerMonth | 30 |
Not included
- Taxes and fees are not modeled
- Tiered or time-of-use pricing is not applied (state-average single-rate basis)
- Standby/phantom loads beyond the duty-cycle model are not separately modeled
- Demand charges do not apply to residential appliance use here
- This is not a measured bill; behavior and weather vary
Change log
1.0.0: initial release. State-average single-rate basis; usage+rate range model; explainable confidence.
Reviewed by: methodology. Historical estimates are never overwritten when a methodology changes.
Pages using this methodology
- Air Purifier Cost to Run 24/7, Estimated
- Electric Baseboard Heater Cost to Run
- Box Fan Electricity Cost: Day, Night, Month
- Ceiling Fan Electricity Cost per Month
- Central Air Conditioner Cost to Run per Month
- Dehumidifier Cost to Run per Day and Month
- Electric Blanket Cost to Run per Night
- Electric Fireplace Cost to Run per Month
- Swamp Cooler Electricity Cost per Month
- Heat Pump Cooling Cost per Month, Estimated
- Humidifier Electricity Cost per Day and Month
- Portable Air Conditioner Cost to Run Monthly
- How Much Does It Cost to Run a Space Heater?
- Window AC Unit Cost to Run per Day and Month
- Air Fryer Electricity Cost per Use and Month
- Coffee Maker Cost per Pot and per Month
- Dishwasher Electricity Cost per Cycle and Month
- Electric Stove Top Cost per Hour of Cooking
- Electric Kettle Cost per Boil and Month
- Electric Oven Cost per Hour of Baking
- Microwave Electricity Cost per Use and Month
- Pressure Cooker Electricity Cost per Meal
- Slow Cooker Cost for 8 Hours on Low
- Toaster Oven Cost per Use and per Month
- Chest Freezer Electricity Cost per Month
- Mini Fridge Electricity Cost per Month
- Refrigerator Electricity Cost per Month and Year
- Washing Machine Electricity Cost per Load
- Electric Dryer Cost per Load and per Month
- Electric Water Heater Cost per Month
- Hair Dryer Electricity Cost per Use
- 3D Printer Electricity Cost per Print
- Desktop Computer Cost to Run per Month
- Game Console Electricity Cost per Month
- Laptop Charging Cost per Day and Month
- TV Electricity Cost per Day, Month, Year
- Wi-Fi Router Electricity Cost per Year
- Aquarium Electricity Cost per Month
- Grow Light Electricity Cost per Month
- Hot Tub Electricity Cost per Month
- Pool Pump Electricity Cost per Month
- Home Sauna Electricity Cost per Session
- Treadmill Electricity Cost per Workout
- EV Home Charging Cost per Month (Level 2)
- Sump Pump Electricity Cost per Month
- Well Pump Electricity Cost per Month