Will a 13000-Watt Generator Run My Whole House?

Disclosure: I get commissions for purchases made through links in posts.

You ought to calculate the precise wattage of your household appliances in order to determine the size of generator required to power a house. Appliance labels frequently specify the energy requirements in wattage or amps of power. In general, a 13000-watt generator is not intended to run an entire house because it cannot handle all the equipment used in a typical modern home. You might need a 22000-watt whole-house standby generator to reliably power all the appliances in an entire home.

Can a home be powered by a 13000-watt generator?

You might assume that a 13000-watt generator will be able to power several of your major appliances, including a freezer, refrigerator, washing machine, and window air conditioner. A 13000-watt generator, however, will only provide you with enough electricity to run a portion of your home, but not the entire thing.

During a power outage, you might be able to run the air conditioner, an electric stove, lights, a refrigerator, and a well pump. However, you must exercise caution to avoid overloading the generator and forcing it to shut down by running too many appliances at once. Until you can restart the portable generator, your home won’t have backup power.

What are the wattage of typical home appliances?

To begin, establish a list of every household appliance that you wish to power with a backup generator during a power outage. The next step is to calculate both the start and running power consumption of each item on that list. An appliance wattage estimation guide can be used as a guide if the energy amounts are not listed on the appliance label.

The following table uses either the starting wattage or the operating wattage needed by the particular household appliance, depending on which figure is higher.

Well pump2000
Water heater4000
Washing machine2000
Sump pump2000
Space heater1500
Rice cooker700
Microwave oven1000
Electric stove2000
Electric oven2000
Deep freezer2000
Clothes iron1500
Clothes dryer3500
Central AC5000
Air fryer1500

The above-mentioned wattage numbers are only approximations, therefore the real wattage of your household appliances will vary based on the product type and its unique characteristics. As a result, you should check each device in your house separately to verify the given power consumption figures. The total wattage needed to power anything you want to use during a power outage may then be calculated by adding together all the figures.

What is the smallest generator size that can power a house?

Even while a 13000-watt generator won’t be able to power every gadget in your house, it should be enough to power the majority of them. The most important equipment and gadgets in your house should still work, so you can cope with a power outage. A window air conditioner, an electric cook top, a microwave, and other appliances would likely be used.

You should keep in mind that portable generators with a power output of less than 3000 watts are only appropriate for use with recreational vehicles and outdoor pursuits like camping and hunting. To power some of your home’s most important appliances, you truly need a hefty portable generator that generates more than 9000 watts. If it is any smaller, you might not be able to start the air conditioner while still trying to keep the refrigerator operating.

While a whole-home standby generator may power a full house, a small portable inverter generator may be used to power one or two appliances. To determine the size of the home backup generator that might power your home, you must assess your energy usage and determine the bare minimum of power you require.

When everything is taken into account, I wouldn’t go much lower than a 10000-watt portable generator to power your home’s most crucial gadgets. The smallest size of home standby generator that is advised if you plan to power your whole house during a power loss is usually about 22000 watts.


In addition to choosing the proper size and kind of generator for your needs and budget, it’s crucial to think about how you are going to make use of the generator. There is a home backup generator that will work for your household, whether you need to operate certain essential appliances or need comprehensive whole-house backup power. Portable and stationary backup generators are generally fueled by either natural gas or propane. It has the capacity to supply your house with electricity for several days at a stretch.

It could be a smart investment to get a few thousand watts larger unit if your home demands a little extra power beyond 13000 watts. Naturally, how big a generator you need to buy will depend a lot on how many things it will have to power at once. You may determine the approximate amount of the backup generator you require by adding up the total wattage consumed by all of your household equipment.

Photo by Ivan on Unsplash.