Appliance Energy Rating Calculator
Single Appliance Energy Cost
Formula
Annual Cost = (Watts x Hours/Day x 365 / 1000) x $/kWh. Annual CO2 = Annual kWh x 0.92 lbs CO2/kWh.
Frequently Asked Questions
What is an EnergyGuide label?
The EnergyGuide label is required on most appliances in the US. It shows the estimated annual energy consumption in kWh and operating cost, allowing you to compare efficiency between models.
Which appliances use the most energy?
The largest energy consumers in most homes are HVAC systems (46%), water heaters (14%), washers/dryers (13%), lighting (9%), and refrigerators (7%). Switching to efficient models in these categories yields the biggest savings.
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