Appliances
Common Household Appliance Energy Use
Common Household Appliance Energy Use
Listed below are some common appliances, their wattage and an estimate of operating costs. There is also a simple formula for calculating operating costs below
|
Appliance
|
Watts
|
Hours/Mo
|
kWh/Mo
|
Avg. $/Mo
|
|
Air Conditioner (Room) 6,000 BTU
|
750
|
120 - 730
|
90 - 548
|
9.10 – 55.40
|
|
Air Conditioner (Room) 9,000 BTU
|
1050
|
120 - 730
|
126 - 767
|
12.74 – 77.54
|
|
Air Conditioner (Central) 2.5 Tons
|
3500
|
240 - 730
|
840 - 2555
|
84.92 – 258.31
|
|
Ceiling Fan
|
65
|
15 - 730
|
1 - 47
|
.10 – 4.75
|
|
Clock
|
5
|
730
|
4
|
.40
|
|
Clothes Dryer
|
5000
|
6 - 28
|
30 - 140
|
3.03 – 14.15
|
|
Clothes Washer, Automatic (With Electric Water Heating)
|
1800
|
7 - 40
|
13 - 72
|
1.31 – 7.28
|
|
Clothes Washer, Automatic (With Non-Electric Water Heating)
|
500
|
7 - 40
|
4 - 20
|
.40 - 2.02
|
|
Coffee Maker
|
900
|
4 - 30
|
4 - 27
|
.40 – 2.73
|
|
Computer (Monitor & Printer)
|
200
|
25 - 160
|
5 - 32
|
.51 -3.24
|
|
Crock Pot
|
250
|
8-24
|
2-6
|
.20 - .61
|
|
Dehumidifier
|
350
|
120 - 730
|
42 – 256
|
4.25 – 25.88
|
|
Dishwasher (With Electric Water Heating)
|
1500
|
8 - 40
|
12-60
|
1.21 – 6.07
|
|
Dishwasher (With Non-Electric Water Heating)
|
400
|
8 - 40
|
3 - 16
|
.30 – 1.62
|
|
Drill
|
300
|
3 - 7
|
1 - 2
|
.10 - .20
|
|
Electric Blanket
|
180
|
30 - 90
|
5 - 16
|
.51 – 1.62
|
|
Electric Heater (Portable)
|
1500
|
30 - 90
|
45-135
|
4.55 – 13.65
|
|
Fan (Portable)
|
115
|
18 - 52
|
2 - 6
|
.20 - .61
|
|
Food Blender
|
390
|
3 - 5
|
1 - 2
|
.10 - .20
|
|
Food Freezer (15 cu. ft.)
|
335
|
180 - 420
|
60 – 141
|
6.07 – 14.26
|
|
Frying Pan
|
1150
|
10 - 20
|
12 - 23
|
1.21 – 2.33
|
|
Furnace Fan Motor (Intermittent)
|
350
|
160 - 415
|
56 - 145
|
5.66 – 14.66
|
|
Furnace Fan Motor (Continuous)
|
350
|
730
|
256
|
25.88
|
|
Hair Dryer (Portable)
|
1000
|
1 - 10
|
1 - 10
|
.10 - 1.01
|
|
Heating Pad
|
65
|
15 - 30
|
1 - 2
|
.10 - .20
|
|
Heat Tape
|
200
|
250-500
|
50-100
|
5.06 – 10.11
|
|
Humidifier (Portable)
|
100
|
80 - 540
|
8 - 54
|
.81 – 5.46
|
|
Iron (Hand)
|
1000
|
1 - 10
|
1 - 10
|
.10 - 1.01
|
|
Lighting Single Lamp (60W)
|
60
|
17 - 200
|
1 - 12
|
.10 – 1.21
|
|
Compact Fluorescent (60W Equiv)
|
18
|
17 - 200
|
.3 – 4
|
.03 - .40
|
|
LED Light Bulb (60W Equiv)
|
9
|
17-200
|
.2-2
|
.02 - .20
|
|
Fluorescent (2 Tube 4 ft.)
|
100
|
10 - 200
|
1 - 20
|
.10 – 2.02
|
|
Microwave Oven
|
1300
|
5 - 30
|
7-39
|
.71 – 3.94
|
|
Power Saw
|
275
|
2 - 4
|
.6-1
|
.06 - .10
|
|
Range
|
2500
|
10 - 50
|
25-125
|
2.53-12.64
|
|
Refrigerator-Freezer Frost Free (17 cu. ft.)
|
500
|
150 - 300
|
75 – 150
|
7.58 – 15.17
|
|
Refrigerator (Non Frost Free - 13 cu. ft.)
|
300
|
190 - 300
|
57-90
|
5.76 – 9.10
|
|
Sewing Machine
|
75
|
4 - 14
|
.3 - 1
|
.03 - .10
|
|
Television
|
170
|
60 - 440
|
10-75
|
1.01 – 7.58
|
|
Toaster
|
1150
|
1-4
|
1-5
|
.10 - .51
|
|
Stock Tank Heater (1)
|
1500
|
160-240
|
240-360
|
24.26-36.40
|
|
Vacuum Cleaner (Portable)
|
800
|
2 - 6
|
2 - 5
|
.20 - .51
|
|
Water Bed Heater
|
400
|
150 - 300
|
60 - 120
|
6.07 – 12.13
|
|
Water Heater Typical Family of 4
|
3800
|
100-150
|
380-570
|
38.42 – 57.63
|
|
Water Heater (Heat Pump Style)
|
550
|
100-150
|
55-83
|
5.56 – 8.39
|
|
Water Pump (deep well - moderate power)
|
500
|
10-50
|
5-25
|
.51 – 2.53
|
|
Hot Tub
|
6000
|
30-100
|
180-600
|
18.20 – 60.66
|
The above figures are averages only. Actual usage may differ for each consumer
In order to calculate the average operating cost for any electrical appliance you can use the following formula:
watts/1000 = kW x hours of operation = kWh x kWh rate = cost
Watts can usually be found on the appliance nameplate. If the nameplate lists amps: volts x amps = watts
Example: How much does it cost to operate my portable electric heater? Electric heater wattage is usually given on the unit itself, or with the literature that comes with it. An example is 1500 watts. I use the heater an average of 45 hours during winter months, Klickitat County PUD’s electric rate is $.1011.
1500 watts/1000 = 1.5 kW x 45 hours of operation = 67.5 kWh x $.1011 = $6.83
Now we have an 8 amp heater. The calculation changes just a bit:
8 amps x 120 volts household current = 960 watts/1000 = .96 kW x 45 hours = 43.2 kWh x $.1011= $4.37