Wellesley Town Offices
How Much Does it Cost to Run my...?
How much does it cost to run your refrigerator, computer, swimming pool pump, or other appliances?  Below is a list with some average costs for running common household appliances. If you have additional questions please call our Energy Hotline at 1-888-772-4242.


Appliance
Time in use
kilowatt/hours (kWh) used per month
cost at .1340 per kWh
Water bed (no cover)
Continuous
150
$20.10
Electric blanket
8 hrs/day
42
$5.63
Central air conditioning
6 hrs day
900
$120.60
Heater (portable)
8 hrs/day
360
$48.24
Water Heater (80-gallon electric)
Average
350
$47.01
Room Air Conditioner     (12,000 BTU)
6 hrs/day
270
$36.26
Dehumidifier
12 hours/day
216
$29.01
Room Air Conditioner     (6,500 BTU)
6 hrs/day
144
$19.34
Heating system forced air fan (.50 horsepower)
Average
118
$15.85
Heating System circulator pump  (.25 horsepower)
Average
59
$7.92
Humidifier
8 hrs
42
$5.64
Fan (window)
4 hrs/day
24
$3.22
Water well pump   (one horsepower)
20 hrs/month
20
$2.69
Fan (ceiling)
6 hrs/day
18
$2.43
Aquarium (50 gal)
Continuous
54
$7.25
Television (color)
8 hrs/day
41
$5.51
Computer
8 hrs/day
36
$4.83
Laser jet printer
1 hr/day
15
$2.01
Cable box
Continuous
14.5
$1.95
Stereo
3 hrs/day
13
$1.75
Fax machine
Continuous
11
$1.48
Answering Machine
Continuous
7
$0.94
Cordless phone
Continuous
7
$0.94
VCR
2 hrs/day
5
$0.67
Desk jet printer
1 hr/day
3
$0.40
Refrigerator older than 10 years  (frostfree 17.5 cubic ft)
24 hours/day
110
$14.77
Electric range & self-cleaning oven
30 minute/day
60
$8.06
Dishwasher (does not include hot water)
5 loads/week
48
$6.45
EnergyStar Dishwasher  (does not include hot water)
5 loads/week
40
$5.37
EnergyStar Refrigerator/Freezer   (17.5 cubic ft, frostless)
24 hours/day
36
$4.83
Microwave oven
30 minute/day
20
$2.69
Toaster oven
15 minutes/day
11
$1.48
Coffee maker
30 minute/day
9
$1.21
Clock
24 hours/day
5
$0.67
Vacuum cleaner
1 hour/week
4
$0.54
Clothes washer (including electric hot water)
8 loads/week
80
$10.74
EnergyStar Clothes washer (does not include hot water)
8 loads/week
23
$3.09
Electric clothes dryer
8 loads/week
104
$13.97
Spot Flood Light
12 hrs/day
54
$7.25
Halogen torchiere (300-watt)
4 hrs/day
36
$4.83
EnergyStar Spot flood light incandescent equilivent) 40 watt (150-watt incandescent equivalent)
12 hrs/day
14.4
$1.93
Halogen light (90-watt)
4 hrs/day
11
$1.48
EnergyStar Compact flourescent torcheiere - 72 watt, (300-watt incandescent equivilent)
4 hrs/day
8.5
$1.14
Incandescent light bulb (60-watt)
4 hrs/day
7
$0.94
EnergyStar Compact flourescent bulb - 16 watt, (60-watt incandescent equivilent)
4 hrs/day
2
$0.27
Swimming pool pump  (one horsepower)
10 hrs/day
300
$40.29
Jacuzzi hot tub (with insulated cover)
Occasional
200
$26.86
Gutter heating coils
12 hrs/day
54
$7.25
Treadmill
1 hr/day
6
$0.81
Stairmaster
1 hr/day
1
$0.13
source: eren, Department of Energy
In order to determine the usage for a specific appliance you must look at the wattage the appliance uses. Many manufactures include this information on the appliance and in the instruction manual. Once you have the wattage of the appliance by the monthly hours of use, then divide by 1,000 and multiply the total kilowatt hours (kWh) by the cost of the electricity. Currently, Wellesley residents pay .1340 per kWh.