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How much electricity does your appliances use?

Take a look at what you can do for just a few pennies with the help of electricity:

  • Use a 75-watt lamp for 14 hours for about 7 cents
  • Refrigerate food for a day for about 20 cents
  • Operate a window fan for about 1 cent an hour
  • Cook a meal on an electric range -using all the burners and the oven - for about 84 cents an hour.
  • Use the self-cleaning feature on your oven for a total of 35 cents.
  • Wash a load of dishes in a dishwasher for about 7 cents.

Electricity really is a bargain. What else can you buy that costs pennies and does so much work? You definitely couldn't do this amount of work or hire someone else to do it for the same value.



Estimated Average Cost
Electric Blanket 200 2¢/hr
Water Bed Heater 400 4¢/hr
Dehumidifier 390 4¢/hr
Air Cleaner 250 2.5¢/hr
20 gal. Aquarium 150 1.5¢/hr
Vacuum Cleaner 630 6¢/hr
Garage Door Opener 800 8¢/hr
Humidifier - tabletop 177 1.7¢/hr

Kitchen Appliances

Barbeque Grill 1350 13.5¢/hr
Coffee Maker 900 9¢/hr
Deep Fat Fryer 1450 14.5¢/hr
Garbage Disposal 700 7¢/hr
Hot Plate 660 6.6¢/hr
Microwave 1450 14.5¢/hr
Range 12500 $1.25/hr
Sandwich Grill 1160 11.6¢/hr
Toaster 1150 11.5¢/hr
Toaster Oven 1440 14.4¢/hr
Waffle Iron 1120 11¢/hr
Slow Cooker 200 2¢/hr
Home Office    
Personal Computer  80 1¢/hr
Color Monitor 75 1¢/hr
Fax Machine 105 1¢/hr
Injet Printer 35


Laser Printer 400 4¢/hr
Home Entertainment    
Radio 70 1¢/hr
Stereo 150 1.5¢/hr
Component System 500 5¢/hr
Videocassette Recorder 35 1¢/hr
DVD Player 50 1¢/hr
Television Color 19" - 36" 110-133 1¢/hr
53" Projection Television 170 1.7¢/hr
42" Plasma Television 250 2.5¢/hr
50" Plasma Television 550 5.5¢/hr
18 cu. ft Refrig./Freezer (frost free) 720 7¢/hr
24 cu. ft Refrig./Freezer (frost free) 810 8¢/hr
18 cu. ft Refrig./Freezer (manual frost) 630 6¢/hr
24 cu. ft Refrig./Freezer (manual frost) 720 7¢/hr
Refrig./Freezer Side-by-Side 1020 10¢/hr
12 cu. ft Freezer (frost free) 650 6.5¢/hr
24 cu. ft Freezer (frost free) 845 8¢/hr
12 cu. ft Freezer (manual frost) 650 6.5¢/hr
24 cu. ft Freezer (manual frost) 845 8¢/hr
Swimming Pool and Spa    
Hot Tub Heater 6000 60¢/hr
Hot Tub Pump (1 hp) 1800 18¢/hr
Swimming Pool Filter Pump 1200-2400 12¢/hr - 24¢/hr
Swimming Pool Sweep Pump 900 9¢/hr
Farm Operations    
1/3 hp Water Pump 250 2.5¢/hr
1.5 hp Water Pump 1120 11¢/hr
1 hp Well Pump  2000 20¢/hr
Stock Tank Water Heater 1500 15¢/hr
Heat Lamp 250 2.5¢/hr
500 Watt Head Bolt Heater 500 5¢/hr
800 Watt Head Bolt Heater



1500 Watt Head Bolt Heater 1500 15¢/hr
Livestock Fencer 100 $1.00/month
Security Light (consumer owned) 90 $9.00/month
750 watt Individual Baseboard Heater Each foot 250 2¢/hr
750 watt Portable SpaceHeater/ Oil Filled Radiator 750 7.5¢/hr
1000 watt Portable SpaceHeater/ Oil Filled Radiator 1000 10¢/hr
1500 watt Portable SpaceHeater/ Oil Filled Radiator 1500 15¢/hr
Electric Fireplace (heating mode) 1500 15¢/hr
Forced Air Systems    
15 kw Central Electric Furnace 15,350 $1.5323/hr
20 kw Central Electric Furnace 20,490 $2.00/hr
25 kw Central Electric Furnace 25,670 $2.50/hr
3 Ton Air Source Heat Pump (without backup running)   66¢/hr
4 Ton Air Source Heat Pump (without backup running)   71¢/hr
5 Ton Air Source Heat Pump (without backup running)   88¢/hr
3 Ton Air Source Heat Pump (with 15 KW backup running)   $2.07¢/hr
4 Ton Air Source Heat Pump (with 15 KW backup running)   $2.25/hr
5 Ton Air Source Heat Pump (with 15 KW backup running)   $2.42/hr
3 Ton Ground Source Heat Pump (without backup running)   38¢/hr
4 Ton Ground Source Heat Pump (without emergency backup)   51¢/hr
5 Ton Ground Source Heat Pump (without emergency backup)   88¢/hr
3 Ton Ground Source Heat Pump with 15 kw backup   $1.53/hr
4 Ton Ground Source Heat Pump with 15 kw backup   $2.05/hr
5 Ton Ground Source Heat Pump with 15 kw backup   $2.05/hr
Attic Fan 370 3.7¢/hr
Ceiling Fan 150 1.5¢/hr
Box Fan (20") 180 2¢/hr
Furnance (1/2 hp) 500 5¢/hr
Room Air Conditioner    
6000 Btu/hr 706 6¢/hr
12,000 Btu/hr 1412 14¢/hr
24,000 Btu/hr 2824 28¢/hr
Central Air Conditioner    
3 Ton   66¢/hr
4 Ton   71¢/hr
5 Ton   88¢/hr
Air Source Heat Pump    
3 Ton   53¢/hr
4 Ton   71¢/hr
5 Ton   88.7¢/hr
Ground Source Heat Pump    
3 Ton   38.7¢/hr
4 Ton   51¢/hr
5 Ton   71¢/hr
Water Heating, Laundry & Cleaning    
Dishwasher with cold water 1400 14¢/hr
Dishwasher with hot water 1400 25¢/hr
Clothes Dryer (per load) 5000 50¢/hr
Clothes Washer (per load) cold 500 5¢/hr
Clothes Washer (per load) hot 500 15¢/hr



Water Heating

Number of people
Gallons per month
kwhs per month
Cost per


(Rule of thumb calculation: 100kwhs/person/month + 100 kwhs/month to keep water heated)


All computations based on a 10 cents per kilowatt hour electric rate. Estimated kwhs are based on average estimated consumption of electric home appliances.


What is a Kilowatt-Hour?


We pay for electricity in kilowatt-hours (kwhs). One kilowatt-hour is the equivalent of using 1,000 watts for one hour or using a 100-watt light bulb for 10 hours. While electric rates may vary among electric suppliers, we will use the average of eight cents per kilowatt hour for the above examples.


When these kilowatt hours add up, electric bills get higher. And kilowatt hour usage is adding up more and more each year. According to statistics, the average family's use of electricity is increasing at a rate of 4 to 7 percent per year.


For that reason, it seems reasonable that if we become more aware of how we use these kilowatt-hours, we can learn how to use them more efficiently.


What Does it Cost to Run My Appliances?


The appliance use chart above shows the most commonly used appliances and office equipment in homes, the average wattage of that equipment and the estimated average cost.


To calculate the exact use of your appliances, or for those not listed in this chart, use the following formula:


amps x volts = watts
watts x hours = watt-hours
watt-hours / 1000 = kilowatt-hours (kwhs)
kwh x .10 (10 cents) = estimated cost of using appliance.


Look for the serial plate on the bottom or back of the appliance. It lists the power used in terms of watts (120 watts might be written 120 w) or amps and volts.


We will use an electric hand mixer as an example. This appliance requires about 127 watts.


Here is how you would figure its usage for 15 minutes:


15 minutes = 1/4 hour, so
120 watts x 1/4 hour = 30 watt-hours
30 watt-hours / 1000 = .03 kwh
.03 kwh x 10 cents = .003 cent(three-tenths of one cent)


For a larger appliance such as a water heater, remember that it is only running when it has clicked on and is actually heating water. The time your water heater is on varies according to how much you do laundry, take baths, or run the dishwasher. But, let's say your water heater is on for 3 hours on a particular day (the national average):


4,500 watts x 3 hours = 13,500 watt-hours
13,500 watt-hours / 1000 = 13.5 kwh
13.5 kwh x 10 cents = $1.35


Or, from another angle, you can see that you would be using 4.5 kwh for every full hour that your water heater is on. That means it costs you 31.5 cents per hour.


There are several things you can do to use electricity more efficiently.

You will find that your electric furnace, air conditioner and water heater will make up the greatest percentage of your electric bill, so these are the areas in which to concentrate your energy management efforts.


There are other things you can do as well, such as change furnace filters at least once a month, use compact fluorescent light bulbs, and make sure the coils on your refrigerator are clean so it runs more efficiently.



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All Rights Reserved.