Berkshire Photovoltaic Services

Typical Wattages of Various Appliances

TYPICAL WATTAGES of VARIOUS APPLIANCES

Below are some examples for wattage for various household appliances:

Clock radio = 10 watts
Coffee maker = 900-1200 watts
Clothes washer = 350-500 watts
Clothes dryer = 1800-5000 watts
Dishwasher = 1200-2400 watts (using the drying feature greatly increases energy consumption)
Dehumidifier = 785 watts
Fans
- Ceiling = 65-175 watts
- Window = 55-250 watts
Hair Dryer = 1200-1875 watts
Heater (portable) = 750-1500 watts
Microwave oven = 750-1100 watts
Personal computer
- CPU - awake/asleep = 120/30 watts or less
- Monitor - awake/asleep = 150/30 watts or less
- Laptop = 50 watts
Radio (stereo) = 70-400 watts
Refrigerator (frost-free, 16 cubic ft) = 725 watts
Televisions (color)
- 19" = 65-110 watts
- 27" = 113 watts
- 36" = 133 watts
- 53-61" Projection = 170 watts
- Flat screen = 120 watts
Toaster = 800-1400 watts
Toaster oven = 1225 watts
VCR/DVD = 17-21 watts/20-25 watts
Vacuum cleaner = 1000-1440 watts
Water heater (40 gal) = 4500-5500 watts
Water pump (deep well) = 250-1100 watts

Formula for Estimating Energy Consumption Use this formula to estimate an appliance's annual energy use and annual cost: (Wattage x Hours Used Per day x # Days Per Year) / 1000W = Annual Use Kilowatt Hours (kWh) Annual Use (kWh) x Local Utility Rate Per kWh Consumed (eg: 11.79¢) = Annual $/year Example: Window fan (200 Watts x 4 hours/day x 120 days/year) / 1000 = 96 kWh 96 kWh x 11.79¢ = $11.32 per year

Source:U.S. Department of Energy http://www.eere.energy.gov/consumer/your_home/appliances/index.cfm