What size generator to run a 2000 sq ft house

What size generator to run a 2000 sq ft house? To determine what size generator to run a 2000 sq ft house, you need to consider the power requirements of your home. A 2000 sq ft house typically requires a generator with a capacity of at least 5000 to 6000 watts to cover essential appliances and lighting during a power outage. However, if you want to power additional appliances or central air conditioning, you may need a generator with a higher wattage, such as 8000 to 10,000 watts. It’s essential to assess your specific needs and consult with a professional to ensure you choose the right generator size for your home to maintain comfort and safety during emergencies.

What size generator to run a 2000 sq ft house

What size generator to run a 2000 sq ft house

When it comes to ensuring that your home remains powered during unexpected outages, choosing the right generator size is crucial. A 2000 square foot house, like any other, requires careful consideration to determine the appropriate generator size to keep your lights on, appliances running, and your family comfortable. In this article, we will explore the steps to help you select the ideal generator size for your 2000 sq ft house.

Assess Your Power Needs

Before diving into the world of generators, the first step is to assess your power needs. Different households have varying requirements based on the appliances and devices they need to power during an outage. Start by making a list of essential appliances and systems you want to keep running. This may include lights, refrigerators, heating or cooling systems, and other vital equipment.

Calculate Wattage

Once you have a list of essential appliances, it’s time to calculate their total wattage. You can usually find this information on the appliance labels or in their user manuals. Add up the wattage of all the items on your list to determine the minimum power capacity your generator should have. For a 2000 sq ft house, this typically ranges from 5000 to 6000 watts for basic needs.

Consider Additional Power Needs

While calculating the wattage for essential appliances is crucial, you may want to consider additional power needs. If you have a central air conditioning system, a well pump, or other high-wattage appliances, you’ll need to account for them as well. In such cases, a generator with a higher capacity, typically around 8000 to 10,000 watts, might be necessary.

Factor in Starting Wattage

Some appliances, such as refrigerators and air conditioners, require extra power to start up (starting wattage) compared to their running wattage. Make sure to include these starting wattage values in your calculations to prevent overload and ensure the smooth operation of your appliances.

Consult a Professional

Choosing the right generator size can be a complex task, especially if you have specific requirements or uncertainties. It’s a good idea to consult with a professional electrician or generator specialist. They can assess your home’s unique needs and recommend the most suitable generator size and type for your 2000 sq ft house.


In conclusion, selecting the appropriate generator size for a 2000 sq ft house involves a careful assessment of your power needs, calculating wattage, considering additional requirements, and factoring in starting wattage. While it may seem daunting, consulting with an expert can simplify the process and ensure that your home remains powered during unexpected outages. By taking these steps, you can enjoy peace of mind knowing that your generator will keep your household running smoothly when the lights go out.


Q1: What generator size do I need for a 2000 sq ft house?

Answer: A 2000 sq ft house typically requires a generator with 5000 to 6000 watts for essential power needs.

Q2: Can I run central air conditioning with this generator size?

Answer: Running central air conditioning may require a generator with 8000 to 10,000 watts or more to ensure proper functioning.

Q3: How do I calculate the wattage for my appliances?

Answer: Calculate the wattage by checking appliance labels or manuals, then add up the values for all essential items.

Q4: Is it necessary to consult a professional when choosing a generator size?

Answer: Consulting a professional, such as an electrician or generator specialist, is recommended for accurate sizing based on your specific needs and circumstances.

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