Generator Sizing (Watts)
Sample wattage for common household and light duty commercial products. Knowing the total wattage of appliances that you will be running can help determine the size of generator needed.

Appliance

Running
Wattage
Starting
Wattage

Heating I Cooling

Furnace Fan, gas or oil fired

 1/8 horsepower

300

500

 1/6 horsepower

500

750

 1/4 horsepower

600

1000

 2/5 horsepower

700

1700

 3/5 horsepower

875

2350

Central Air Conditioner

 10,000 BTU

1500

2200

 20,000 BTU

2500

3300

 24,000 BTU

3800

4950

 32,000 BTU

5000

6500

 40,000 BTU

6000

6700

Kitchen

Refrigerator

600

2200

Freezer

500

2000

Dish Washer

700

1400

Dish Washer wI dryer

1450

1400

Clothes Dryer - gas

700

1800

Clothes Dryer - electric

5750

1800

Microwave - 750W

750

800

Washing Machine

1000

3000

Coffee Maker

850

0

Toaster

850

0

Electric Skillet

1500

0

Stove - electric

2000

0

Bathroom

Hair Dryer

1500

0

Iron

1200

0

General Appliances

Personal Computer

600

600

Water Heater

4500

4500

Lights - Wattage

actual

VCR/DVD

50

0

Heating Pad

65

0

Radio

100

0

Television

500

0

Electric Blanket

400

0

Garage Door - 1/3 hp

725

1400

Water Well Pump - 1/3 hp

750

1400

Water Well Pump -1/2 hp

1000

2100

Vacuum Cleaner

1100

0

Commercial Products

1/4" Drill

300

300

Jigsaw

300

300

Router

1000

1000

Disc Sander

1200

1200

Chain Saw

1200

1200

7-1/4" Circular Saw

1500

3000

Air Compressor

2000

4000


   

 

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