Appliance Energy Use

Learn the costs to operate typical appliances

The cost calculations below are intended as examples for common household items and are based on the approximate prices in place in January 2021. Prices used include:

  • A per-kilowatt-hour rate of 10.84¢ for firm service.
  • An off-peak water-heating rate of 8¢ per kilowatt-hour.
  • An off-peak heating rate of 4.76¢ per kilowatt-hour.

Your actual price may vary by your state, season, and rate. All cost calculations are rounded to the nearest kilowatt-hour and penny.

Use this formula to calculate the cost to operate any appliance

Appliance wattage ÷ 1,000 × the hours the appliance is used
× the price per kilowatt-hour of electricity = cost of operation

Seasonal use calculations

Heating and cooling

Approx. wattage  Cooling season kWh  Heating season kWh   Cooling cost Heating cost 
Cold-climate heat pump (3-ton operating to 0°F) 3700 1473 6685 $159.67 $724.65
Cold-climate heat pump (3-ton operating to 0°F) off-peak 3700 1473 6685 $70.11 $318.21

Cold-climate heat pumps provide 100% of cooling and 82% or more of heating requirements with energy efficiency of 200% or higher!

 Cooling only

Approx. wattage Low hours of use High hours of use Low kWh High kWh Low cost High cost
A/C room - 9,000 Btu 1050 120 720 126 756 $13.66 $81.95
A/C central - 15 SEER 2.5 tons 2000 240 860 480 1720 $52.03 $186.45
Air-source heat pump 15 SEER 2.5 tons off-peak 2000 240 860 480 1720 $22.85 $81.87

 

Monthly use calculations

Heating and cooling Approx. wattage Low hours of use High hours of use Low kWh High kWh Low cost
High cost
Baseboard heater - 4 ft., 250 watts/ft. 1000 100 200 100 200 $10.84 $21.68
Fan - ceiling 60 15 330 1 20 $0.11 $2.15
Fan - portable 115 18 52 2 6 $0.22 $0.65
Furnace fan motor - intermittent 350 160 415 56 145 $6.07 $15.75
Furnace fan motor - continuous 350 720 720 252 252 $27.32 $27.32
Heat recovery air exchanger 125 300 720 38 90 $4.07 $9.76
Portable heater 1500 30 300 45 450 $4.88 $48.78
Water heating     Approx. wattage Low kWh High kWh Low cost High cost
Water heating on off-peak water heating rate: $0.08/kWh              
family of 6 off-peak     4500 540 725 $43.20 $58.00
family of 4 off-peak     4500 360 485 $28.80 $38.80
family of 2 off-peak     4500 180 245 $14.40 $19.60
Water heating on off-peak heating rate: $0.0476/kWh            
family of 6 off-peak     4500 540 725 $25.70 $34.51
family of 4 off-peak     4500 360 485 $17.14 $23.09
family of 2 off-peak     4500 180 245 $8.57 $11.66
Heat pump water heater 3.24 EF; heat pump mode     500 77 112 $8.35 $12.14
Hot tub
Approx. wattage  Low hours of use  High hours of use  Low kWh  High kWh  Low cost High cost
4-person, circulating pump 1500 30 45 45 68 $4.88 $7.32
4-person inside, 120-volt heater 1500 120 180 180 270 $19.51 $29.27
4-person outside, 120-volt heater 1500 90 540 135 810 $14.63 $87.80
4-person inside, 240-volt heater 6000 30 45 180 270 $19.51 $29.27
4-person outside, 240-volt heater 6000 90 135 540 810 $58.54 $87.80
Kitchen appliances              
Coffeemaker 1000 4  30 4  30 $0.43 $3.25
Dishwasher  1300 8  40 10  52  $1.13  $5.64
Frying pan  1150 5 15 6  17  $0.62  $1.87
Microwave  1100 5 15 6  17  $0.60  $1.79
Toaster oven  1500 2 15 1  23  $0.11  $1.63
Range              
Broiler  3000 1  10 3 30  $0.33  $3.25
Oven  3500 10  50 35 175  $3.79  $18.97
Small element  1200 10 25 12 30  $1.30  $3.25
Large element  2300 10 25 23  58 $2.49  $6.23
Self-cleaning cycle only  3200 3 6  10 19  $1.04  $2.08
Refrigerator-freezer              
Non frost-free 17 cu. ft.  500 150  300 75  150  $8.13  $16.26
ENERGY STAR® frost-free 19 cu. ft.  400 150  300 60  120  $6.50  $13.01
Freezer ENERGY STAR® 19-22 cu. ft. chest  350 180  420 63  147  $6.83  $15.93
Household Appliances
Clothes dryer 5000 6 28 30 140 $3.25 $15.18
Clothes washer 500 7 40 4 20 $0.38 $2.17
Dehumidifier 350 120 720 42 252 $4.55 $27.32
Humidifier - portable 100 90 300 9 30 $0.98 $3.25
Television              
LED 30" 50 60 440 3 22 $0.33 $2.38
LED 42" 80 60 440 5 35 $0.52 $3.82
LED 50" 100 60 440 6 44 $0.65 $4.77
LCD 50" 150 60 440 9 66 $0.98 $7.15
Plasma 50" 300 60 440 18 132 $1.95 $14.31
Lighting              
Incandescent (60w) 60 17 200 1 12 $0.11 $1.30
Compact fluorescent (CFL)(60w equivalent) 13 17 200 0.2 3 $0.02 $0.28
LED (60w equivalent) 9.5 17 200 0.2 2 $0.02 $0.21
Chandelier (5 lamps, 40w each) 200 8 100 2 20 $0.17 $2.17
Fluorescent tube (2 tube, 4 ft.) 96 17 320 2 31 $0.18 $3.33
Christmas lights 1,000 mini incandescent 408 60 240 24 98 $2.65 $10.61
Christmas lights 1,000 mini LED 69 60 240 4 17 $0.45 $1.80
Christmas lights 300 C9 incandescent 2100 60 240 126 504 $13.66 $54.63
Christmas lights 300 C9 LED 29 60 240 2 7 $0.19 $0.75

 

Hourly use calculations

Medical Equipment Approx. wattage kWh per hour of use Cost per hour of use
Oxygen concentrator 600 0.6 $0.07
Sleep apnea machine (CPAP) 60 0.06 $0.01
Computers      
Desktop computer 100 0.10 $0.011
Laptop 50 0.05 $0.005
Monitor - 17" CRT 100 0.10 $0.011
Monitor - 17" LCD 35 0.04 $0.004
Recording and Gaming Devices      
Xbox One 180 0.18 $0.02
DVD player 40 0.04 $0.004
DVR 150 0.15 $0.016