Appliance calculators

Find the cost of the appliance you actually use.

These pages are built for specific search intent, but every page has to pass a usefulness test before it gets published.

Start with appliances that run hot, run long, or both. Space heaters, air conditioners, dryers, dehumidifiers, and EV chargers often matter more than small electronics because their wattage or runtime can change the bill quickly.

Each page includes a preset calculator, practical caveats, and an explanation of which assumptions are worth measuring. More appliance pages should be added only when they bring a different estimate pattern or buying decision.

Heating

Space Heater

Estimate how much a portable electric space heater adds to a monthly bill and compare lower heat settings.

Default use
180 kWh/mo
Estimated cost
$29.59/mo

Cooling

Window Air Conditioner

Calculate the running cost of a window AC unit by wattage, daily runtime, and electricity rate.

Default use
216 kWh/mo
Estimated cost
$35.51/mo

Kitchen

Refrigerator

Estimate refrigerator electricity cost with duty-cycle assumptions instead of assuming the compressor runs all day.

Default use
36 kWh/mo
Estimated cost
$5.92/mo

Laundry

Electric Clothes Dryer

Estimate electric dryer cost per load, per month, and per year using runtime and local electricity rate.

Default use
60 kWh/mo
Estimated cost
$9.86/mo

Air quality

Dehumidifier

Calculate dehumidifier operating cost for basements, laundry rooms, and humid climates.

Default use
150 kWh/mo
Estimated cost
$24.66/mo

Transportation

Home EV Charger

Estimate home EV charging cost from charger power, charging hours, and electricity price.

Default use
432 kWh/mo
Estimated cost
$71.02/mo