What size generator to run a house

When it comes to choosing the right generator, whether for emergency backup, outdoor activities, or job site power needs, having reliable and efficient options is crucial.

To help you make an informed decision, we’ve rounded up some of the top-rated generators available on Amazon.

Each of these models offers unique features to cater to different requirements, from quiet and portable options to high-capacity units.

Here’s a look at some excellent choices to consider for your power needs.

Here are some highly-rated generators available on Amazon that might suit different needs.

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Honda EU2200ITAN 2200-Watt 120-Volt Super Quiet Portable Inverter Generator

Honda EU2200ITAN 2200-Watt 120-Volt Super Quiet Portable Inverter Generator

Capacity: 2,200 watts (starting), 2200 Watts (running)

Features: Quiet operation, fuel-efficient, reliable. Honda’s exclusive My Generator smartphone app offers remote generator operation and monitoring

Time: 8 Hours.

Link: Honda EU2200i


Westinghouse WGen7500 Portable Generator

Westinghouse WGen7500 Portable Generator

Capacity: 7,500 watts (starting), 7500 Peak Watts; Electric and Recoil Start.

Features: Long run time, remote start, durable.

Time: Up to 13 Hours of Run Time on a 6. 6 Gallon Fuel Tank With Fuel Gauge

Link: Westinghouse WGen7500


Champion Power Equipment 2500-Watt

Champion Power Equipment 2500-Watt

Capacity: 2500 watts (starting), 1850 watts  (running)

Features: Dual fuel, electric start, high capacity.

Time: up to 11.5 hours run time.

Link: Champion 2500


DuroMax XP12000EH Generator

DuroMax XP12000EH Generator

Capacity: 12,000 watts (starting), 9,500 watts (running)

Features: Portable, Electric Start, Foldable Handle, Low Oil Shutdown, Dual Fuel, CO Sensor

Time: 8 hours

Link: DuroMax XP12000EH


The size of generator you need to run a house depends on several factors, including the size of your home, the number of appliances and systems you want to power, and your overall energy consumption.

Here’s a general guide to help you determine the right size:

Calculate Total Wattage:

Make a list of essential appliances and systems you want to run during a power outage, such as refrigerators, HVAC systems, lights, and any other critical devices.

Check the wattage requirements for each appliance (usually listed on the appliance or in the manual).

Add up the total wattage to get a sense of your needs.

Consider Starting vs. Running Watts:

Some appliances, like refrigerators and air conditioners, have higher starting wattages than running wattages.

Make sure your generator can handle the surge or starting watts for these appliances in addition to their running watts.

Determine Generator Size:

Small Home:

For a small home or if you only need to power essential appliances, a generator with a capacity of 5,000 to 7,500 watts (5-7.5 kW) may suffice.

Medium Home:

For a medium-sized home with more appliances, you might need a generator with 10,000 to 12,500 watts (10-12.5 kW).

Large Home:

For larger homes or those with higher energy needs, you could need a generator in the range of 15,000 to 20,000 watts (15-20 kW) or more.

Consider Fuel Type and Run Time:

Generators come in different fuel types (gasoline, propane, natural gas, diesel) and run times.

Choose a generator that aligns with your fuel preferences and how long you need it to run.

Professional Assessment:

If you’re unsure, consider consulting with a professional electrician or generator specialist.

They can perform a load calculation and recommend a generator size that meets your specific needs.

By assessing your wattage requirements and considering these factors, you can choose a generator that’s appropriately sized for your home.

Table to help you determine the appropriate generator size for your home based on typical wattage requirements:

Home Size/TypeEstimated Wattage NeededGenerator Size (Watts)
Small HomeUp to 5,000 watts5,000 – 7,500 watts
Medium Home7,000 – 12,000 watts10,000 – 12,500 watts
Large Home12,000 – 20,000+ watts15,000 – 20,000+ watts

Key Points to Consider:

  • Small Home: Suitable for essential appliances such as lights, refrigerator, and a few small devices.
  • Medium Home: Can handle more appliances, including heating/cooling systems and additional electronics.
  • Large Home: Ideal for homes with multiple high-wattage appliances and HVAC systems.

Additional Notes:

  • Starting Watts vs. Running Watts: Ensure the generator can handle the initial surge of power required by appliances.
  • Fuel Type: Choose a fuel type that fits your needs and availability.
  • Professional Assessment: For accurate sizing, consider a professional evaluation of your home’s energy needs.

Selecting the right generator can significantly impact your convenience and safety during power outages or when on the go.

Whether you need a compact and quiet generator for light use or a robust unit capable of handling high power demands, the options listed above offer top-notch performance and reliability.

Explore these models to find the one that best meets your needs and ensures you’re prepared for any situation.

For more details and to purchase, follow the links provided to choose the generator that fits your requirements perfectly.

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