What size generator to run a house

There are a lot of things to consider when purchasing a generator. One of the most important factors is deciding what size generator you need.

This can be tricky since there are many variables to take into account. In this blog post, we will help you determine the right size generator for your needs.

What is a Generator?

A generator is an amazing machine that can provide a lifesaving source of electricity, often when grid power is not available. Ever wished you could just summon electricity with a wave of your hand?

Well, now you can - kind of, thanks to the wondrous invention of the generator. Possessing one of these handheld powerhouses gives homeowners or businesses independence from utility companies.

You can find both small generators for domestic use and larger ones for commercial and industrial purposes - it all depends on how much energy you need!

How to Determine the Right Size Generator for Your Needs

When it comes to purchasing a generator, bigger is not always better. In fact, purchasing a generator that is too large for your needs can be a financial drain on your wallet as well as an environmental hazard. To determine the right size generator for your needs, you'll need to consider how much power you require and how often you will use it.

Think carefully about what all of your electrical appliances and devices add up to in terms of watts, and then pick the type of generator that is able to support the charging requirements of all of your equipment without overworking itself.

Types of Generators

1. Portable Generators:

These are the smallest and most economical units for home or outdoor use. They range from about 2kW to 7kW in size, and they’re perfect for running small appliances such as lights, fans, televisions, refrigerators, and other household items.

2. Standby Generators:

These are usually much larger, ranging from 8kW to 45kW. They are used mostly for commercial and industrial applications, providing energy for large buildings or areas where grid power is not available or unreliable.

3. Industrial Generators:

These are the biggest and most powerful generators, with sizes ranging from 45kW to over 1,000kW. These are usually used in construction sites or large-scale industrial applications such as hospitals, factories, and warehouses.

Factors to Consider When Choosing a Generator

1. Number of Appliances You Plan to Run:

This is the most important factor to consider when deciding what size generator will be best for your needs.

You will need to take into account how many appliances you plan on running at once and add up their individual wattage requirements. This will give you a good idea of how much power you will require from your generator.

2. Your Budget:

Generators vary in price depending on their size and power output. Larger generators are more expensive than smaller ones, so if you’re on a tight budget then it is best to go for the most economical option.

3. Fuel Type:

Generators can run on gasoline, diesel, or propane fuel. Different types of fuel offer different benefits and each type has its own pros and cons.

4. Maintenance Requirements:

Generators require regular maintenance to ensure they are in good working order. Different generators will have different maintenance needs, so it is important to consider this when deciding what size generator you need.

Frequently Asked Questions

1. What size generator do I need for my home?

The size of the generator you need will depend on how much power your appliances and devices require.

It is best to add up the wattage requirements of all of your equipment and select a generator that can provide enough power without overburdening itself.

2. How often should I maintain my generator?

It is recommended that you perform regular maintenance on your generator in order to ensure it runs safely and efficiently.

Depending on the type of generator you have, this could mean performing weekly or monthly checks as well as annual servicing.

3. How much does a portable generator cost?

The price of a portable generator will depend on the size and power output of the generator. Generally, portable generators range in price from around $500 to over $3000.


In conclusion, choosing the right size generator for your needs can be a daunting task. However, by taking into account factors such as the number of appliances you plan to run, your budget, fuel type, and maintenance requirements, you can ensure that you purchase the best generator for your specific needs.

Ultimately, owning a generator is an incredibly useful tool and can provide you with power in times of need. Investing in one will give you independence from utility companies and peace of mind that your home or business will always be powered.

1 ratings