What will a 4000-Watt Generator Run in a House & Outdoors?

A 4000-watt generator can run essentials like a refrigerator, stove and some lights in smaller indoor and outdoor home appliances. It all depends on the energy requirements of your appliances.

Technically, the wattage of a generator determines how much of a load it can support per unit time. It’s usually rated in watts, horsepower or amps and volts. Electronics/appliances are also rated in the same units with their units being the amount of power they need to start and run.

There is the starting wattage and running wattage for each electronic appliance. The starting wattage is the amount of power needed to start the appliance. The running wattage, on the other hand, is the power needed to keep the appliance running. The starting wattage is usually higher than or equal to the running wattage.

For a generator to run a certain appliance, it must be able to produce the starting watts and then the running watts for the appliance. The starting and running wattage aren’t required at the same time but in the order they are mentioned here.

In-house and Outdoor Appliances that can be powered by 4000-watt Generator

With a 4000-Watt generator, you can comfortably run the following items inside and outside the house.

WEN 4000 watt Generator
ApplianceRunning WattsStarting Watts
Light bulb – 60 Watt6060
Sump pump – ½ HP10502200
Electric water heater40004000
Humidifier – 13 Gallons175175
Furnace fan blower – 1/3 HP700700
Window AC – 12,000 BTU32503950
Quartz Halogen Work Light, 300300300
Quartz Halogen Work Light, 1,0001,0001,000
Reciprocating saw960960
Electric drill – ½”, 5.4 Amps600600
Circular saw – 7¼”14002300
Electric grill16501650
DVD/CD Player100100
Microwave oven – 625 watts625625
Coffee maker10001000
Dishwasher – hot dry15001500
Toaster oven12001200
Electric can opener168168
Stereo receiver450450
PlayStation, Xbox, Game Cube4040
Garage door opener – ½ HP8752350
Hair dryer – 1250 Watts12501250
Radial arm saw/table saw – 10″20002000
Air compressor – 11HP9751600
Personal computer with 17-inch monitor800800
Laser printer950950
Copy machine16001600
Outdoor light string250250
Light bulb – 75 watts7575
Sump pump – 1/3 HP8001300
Water well pump – 1/3 HP10002000
Space heater18001800
Furnace fan blower – ½ HP8002350
Window AC 10000 BTU12001800
Central AC 10000 BTU15003000
Washing machine11502250
Quartz Halogen Work Light, 500500500
Airless sprayer 1 1/3 HP6001200
Electric drill – 3/8”, 4 Amps440600
Hammer drill10003000
Miter saw – 10″18001800
Am/FM radio100100
Microwave oven – 1000 Watts10001000
Electric stove – 8″ element21002100
Food processor400400
Color N – 27″500500
Security system500500
Curling iron15001500
Planer/Jointer – b”18001800
Belt sander12002400
Fax machine6565
Inkjet printer8080
Color N – 13″150150
Cell phone battery charger2525
Inflator pump50150
indoor and outdoor appliances a 4000-watt generator can run

Besides the really heavy tasks, a 4000-Watt generator basically runs everything in the home. For the small appliances, you can connect a large number of them without overloading the generator.

Champion 4000-watt portable generator
Champion 46539

Popular 4000-Watt Generators (brands)

Some of the best generators around the 4000-Watt mark include the following:

DuroStar DS4000S Portable Generator4000Starting and running wattages of 4000 and 3300 respectively. 3.96-gallon tank capacity. Runtime of 8 hours at 50% load. 3 power outlets. 69 decibels sound. Weighs 94 pounds.
WEN GN4000i Open Frame Inverter Generator40004000 starting and 35000 running watts. 1.85-gallon tank capacity. Runtime of 7 hours. 5 power outlets. Weighs 70.5 pounds.
All Power America APGG4000 Portable Generator40004000 Watts starting and 3300 Watts running. 72 decibels of sound. 4 power outlets. weighs 132 pounds.
Champion Power Equipment 46539 Portable Generator4000Starting wattage of 4000W and running wattage of 3500W.3 starting mechanisms namely remote, recoil and electric start. Weighs 140 pounds. 3.8-gallon tank.12 hours of runtime at 50% load.4 power outlets. 68 decibels of sound.
DuroMax XP4000S Portable Generator4000Starting and running wattages of 4000 and 3300 in that order. 3.96-gallon tank capacity. 12.3 hours runtime at 50% load. 3 power outlets. 69 decibels sound level.
Westinghouse iGen45000 Super Quiet Portable Inverter Generator4500Starting wattage of 4500 and running wattage of 3700. 52 decibels of sound. Weighs 93 pounds. 3.4-gallon tank capacity. 18 hours of runtime at 25% load. 5 power outlets.
Champion Power Equipment DH Series Open Frame Inverter400064 decibels of sound. Starting and running wattages of 4000 and 3500 respectively. 2.9-gallon tank capacity. 17 hours runtime at 25% load. Modular compatible. 4 power outlets.
Sportsman GEN4000DF Dual Fuel Powered Portable Generator4000Starting and running wattages of 4000 and 3500 respectively. 69 decibels of sound. 3.6-gallon tank. Dual fuel use with gasoline and propane usable by the generator. 10 hours runtime on gasoline a 50% load and 12 hours on propane at 50% load. 5 power outlets.
Briggs & Stratton 30676 Gas Powered Portable Generator4375Starting wattage of 4375. Running wattage of 3500. 5-gallon tank capacity. 14 hours runtime at 50% load. 3 power outlets. Weighs 114 pounds.
Pulsar Portable Gas-Powered Quiet Inverter Generator4000Starting and running wattages of 4000 and 3500. 3.4-gallon tank capacity. 15 hours of runtime at 50% load. 63 decibels of noise. Recoil, remote and electric starters. 4 power outlets.

These options are the very best in the market and will meet your needs in the home.

Further Reading