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Appliance Wattage Guide - Calculate How Much Energy You Use

Want to know how much wattage you are using - (wasting)? Check out a handy guide listing how much energy common appliances use not only when the run, but when you first start them up. Also, find out your running and starting watt needs for a generator.

TOOL OR APPLIANCE

RUNNING
(RATED) WATTS

ADDITIONAL STARTING WATTS

 

TOOL OR APPLIANCE

RUNNING
(RATED) WATTS

ADDITIONAL STARTING WATTS

Light Bulb - 60 Watt

 

60

 

0

 

 

Clothes Dryer - Electric

Clothes Dryer - Gas

5400

700

 

1350

1800

 

Light Bulb - 75 Watt

 

75

 

0

 

Kitchen:

 

 

 

Refrigerator/ Freezer

 

700

 

2200

 

 

Microwave Oven - 625 Watts

 

625

 

0

 

Sump Pump - 1/3 HP

 

800

 

1300

 

 

Microwave Oven - 1000 Watts

 

1000

 

0

 

Sump Pump - 1/2 HP

 

1050

 

2200

 

 

Coffee Maker

 

1000

 

0

 

Water Well Pump - 1/3 HP

 

1000

 

2000

 

 

Electric Stove - 8" Element

 

2100

 

0

 

Electric Water Heater

4000

0

 

 

Dishwasher - Hot Dry

 

1500

 

1500

Heating/Cooling:

 

 

 

 

Food Processor

 

400

 

0

 

Space Heater

 

1800

 

0

 

 

Toaster Oven

 

1200

 

0

 

Humidifier- 13 Gal

 

175

 

0

 

Toaster

850

0

 

Furnace Fan Blower - 1/2 HP

 

800

 

2350

 

 

Electric Can Opener

168

0

 

Furnace Fan Blower- 1/3 HP

 

700

 

1400

 

Family Room:

 

 

 

Window AC - 10,000 BTU

 

1200

 

1800

 

 

VCR

 

100

_

 

Window AC - 12,000 BTU

 

3250

 

3950

 

 

Stereo Receiver

 

450

0

 

Central AC - 10,000 BTU

 

1500

 

3000

 

 

Color N - 27"

 

500

0

 

Central AC - 24,000 BTU

 

3800

 

4950

 

 

X-Box, Game Cube, Playstation

40

0

 

Central AC - 40,000 BTU

 

6000

 

6700

 

Other:

 

 

 

Heat Pump

4700

4500

 

 

Security System

 

500

 

0

Laundry Room:

 

 

 

 

1/2 HP Garage Door Opener

 

875

 

2350

 

Iron

1200

0

 

 

Curling Iron

 

1500

 

0

Washing Machine

1150

2250

 

Hair Dryer - 1250 Watt

1250

0

DIY/Jobsite:

 

 

 

 

Planer/Jointer - b"

 

1800

 

1800

 

Quartz Halogen Work Light, 300

 

300

 

0

 

 

Table Saw/Radial Arm Saw - 10"

 

2000

 

2000

 

Quartz Halogen Work Light, 500

 

500

 

0

 

 

Belt Sander

 

1200

 

2400

 

Quartz Halogen Work Light, 1,000

 

1000

 

0

 

 

Air Compressor - 114 HP

 

975

 

1600

 

Airless Sprayer - 11/3. HP

600

 

1200

 

 

Air Compressor - 1 HP

1600

4500

 

Reciprocating Saw

960

 

0

 

 

 

 

 

Electric Drill - 3/8", 4 Amps

 

440

 

600

  Office Equipment.    

 

Electric Drill - 1/2", 5.4 Amps

 

600

 

900

 

 

Personal Computer w/ 17" Monitor

 

800

 

0

 

Hammer Drill

 

1000

 

3000

 

 

Fax Machine

 

65

 

0

 

Circular Saw - 7-1/4"

 

1400

 

2300

 

 

Laser Printer

 

950

 

0

Miter Saw - 10"

1800

1800

 

 

Inkjet Printer

 

80

 

0

 

 

 

 

Copy Machine

1600

0

Tailgating/Camping:

 

 

 

 

Color N - 13"

 

150

 

0

 

Electric Grill

 

1650

 

0

 

 

Outdoor Light String

 

250

 

0

 

AM/FM Radio

 

100

 

0

 

 

Cell Phone Battery Charger

 

25

 

0

 

CD/DVD Player

 

100

 

0

 

Inflator Pump

50

150

Box Fan - 20"

200

0

 

 

 

 

This formula will focus on determining your running and starting watt needs for a generator.

The size of generator you need depends on your power requirements. Generally, a higher-wattage generator lets you power more items at once.

Select the items you wish to power at the same time. Fill in the running watts and additional starting watt requirements.

Add the RUNNING WATTS of the items you wish to power. Enter this number in the TOTAL RUNNING WATTS column.

Select the ONE INDIVIDUAL ITEM with the highest number of additional starting watts. Take this ONE NUMBER, add it to your TOTAL RUNNING WATTS, and enter it in the TOTAL STARTING WATTS box.

What’s up with Wattage – Frequently asked Questions

How many watts does it take to power basic items in an average size house?
In a typical home, essential items will average 5000 - 7500 watts of power to run.

What is the difference between running watts and starting watts?
Running, or rated watts are the continuous watts needed to keep items running. Starting watts are extra watts needed for two to three seconds to start motor-driven products like a refrigerator or circular saw, this is the maximum wattage the generator can produce

Why is only one additional starting watt item used to calculate your total starting wait requirement?Unlike running watts, starting watts are only needed during the first few seconds of operation. In most cases, only one item will start or cycle at the same time, therefore this is the most accurate estimate.

What if I can't determine the running or the starting watt requirement for a tool or appliance?
If the running watts are not on the tool or appliance, you may estimate using the following equation: WATTS =VOLTS x AMPS.
Only motor-driven items will require additional starting watts. The additional starting watts required may be estimated at 1 -2x the running/rated watts.