The Wattage calculator below is intended to help you determine the essential load requirements of typical home appliances like heating, air conditioning, freezer, pumps, lighting etc. Simply check the box corresponding to the appliances you intend to use simultaneously. At the bottom of the calculator you will automatically see the total Wattage required to operate your appliances. This information will be helpful when choosing the right generator set for you.

Simple Quick Rule of thumb:
Sq. Ft. X 7.5 = Approximate Generator size (Watts) for entire household.

Appliances

 Wattage Requirement
Air Conditioner (Central)
  10,000 BTU 3300
  20,000 BTU (1.7 Ton) 4950
  24,000 BTU (2.0 Ton) 6500
  32,000 BTU (2.7 Ton) 7800
  40,000 BTU (3.4 Ton) 9400
  48,000 BTU (4.0 Ton) 11400
Air Conditioner (Window)
  5,000 BTU 1400
  7,000 BTU 1800
  10,000 BTU 3000
  18,000 BTU (1.5 Ton) 5700
  24,000 BTU (2.0 Ton) 6000
Clothes Dryer
  Gas 2200
  Electric 7550
Electric Range
  6 Inch Element 1500
  8 Inch Element 2100
  Broiler 1400
  Oven 6000
Microwave Oven
  625 Watts 2500
  850 Watts 3200
Toaster
  2 Slice 1050
  4 Slice 1650
Fan
  Attic 350
  Window 200
Furnace (Gas or Oil)
  1/8 HP Fan 800
  1/6 HP Fan 1250
  1/4 HP Fan 1600
  1/3 HP Fan 2100
  1/2 HP Fan 3225
Garage Door Opener
  1/4 HP 2000
  1/3 HP 2500
  1/2 HP 4000
Sump Pump
  1/4 HP 2150
  1/3 HP 3200
Well Pump
  1/4 HP 2150
  1/3 HP 3100
Light Bulbs
  8 @ 60 Watt Bulbs 480
  8 @ 75 Watt Bulbs 600
  8 @ 100 Watt Bulbs 800
Other Items
  Hair Dryer 1500
  Iron 1200
  Radio 200
  Refrigerator / Freezer 3100
  Security System 250
  Space Heater 1200
  Vacuum Cleaner 1000
  Water Heater (2 Elements) 9000
  Television 300
  Coffee Maker 1750
  Computer (PC) 1200
  Dehumidifier 1450
  Dish Washer 2700
  Electric Blanket 400
  Electric Frying Pan 1400

Your Total is: 

Watts

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Note: These are typical load values and are listed for estimation purposes only. Contact Central California Diesel Service for a detailed analysis.
Elliott Power Systems Residential Generator Calculator  V 1.0034 © 2001  All Rights Reserved.