Find the cost of the appliance you actually use.

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.