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Whole House Generators

Best Whole House Generators

From leading brands and best sellers available on the web.
#1

Winner

Generac Guardian 22kW Home Standby

Generac

10%OFF

Generac Guardian 22kW Home Standby Generator with 200 Amp Transfer Switch - Automatic Whole House Backup Power for Storms, Emergencies, and Outages, WiFi Enabled, Runs on Natural Gas or Liquid Propane

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#2
Generac Guardian 24kW Home Standby

Generac

10%OFF

Generac Guardian 24kW Home Standby Generator with 200 Amp Transfer Switch - Automatic Whole House Backup Power for Storms, Emergencies, and Outages, WiFi Enabled, Runs on Natural Gas or Liquid Propane

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#3
Generac 19,300 Starting Watt Portab

Generac

Generac 19,300 Starting Watt Portable Gas Generator - Electric Start - Home Backup or RV Ready - Heavy Duty Frame - Quiet, Long Runtime, Emergency Power - 49-State Compliant

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#4
Generac Guardian 26kW Home Standby

Generac

10%OFF

Generac Guardian 26kW Home Standby Generator with 200 Amp Transfer Switch - Automatic Whole House Backup Power for Storms, Emergencies, and Outages, WiFi Enabled, Runs on Natural Gas or Liquid Propane

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#5
DuroMax XP15000HX 15,000-Watt Dual

DuroMax

12%OFF

DuroMax XP15000HX 15,000-Watt Dual Fuel Portable Generator - Gas & Propane, Remote Electric Start, Whole Home Power Backup, Transfer Switch Ready, RV & Emergency Ready

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Related Products

Up to 36% off

#6
DuroMax XP16000iHT 16,000-Watt Tri

DuroMax

9%OFF

DuroMax XP16000iHT 16,000-Watt Tri Fuel Portable Digital Inverter Generator - Gas, Propane & Natural Gas, Remote Electric Start, Whole Home Power Backup, Transfer Switch Ready, RV & Emergency Ready

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#7
Generac Guardian 10kW Home Standby

Generac

10%OFF

Generac Guardian 10kW Home Standby Generator with 100 Amp Transfer Switch - Automatic Whole House Backup Power for Storms, Emergencies, and Outages, WiFi Enabled, Runs on Natural Gas or Liquid Propane

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#8
Westinghouse 28000 Peak Watt Home B

Westinghouse

Westinghouse 28000 Peak Watt Home Backup Portable Generator, Remote Electric Start with Auto Choke, Transfer Switch Ready 30A & 50A Outlets, Gas Powered, CO Sensor,Blue

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#9
Champion Power Equipment 201222 22

Champion Power Equipment

Champion Power Equipment 201222 22 kW aXis Home Standby Generator with 200A Whole House Switch

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#10
Generac 12,500 Starting Watt Tri-Fu

Generac

Generac 12,500 Starting Watt Tri-Fuel Portable Generator - Electric Start - Gas, Propane or Natural Gas - Home Backup, Jobsite, or RV - Quiet Operation - Long Runtime - 49-State Compliant

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Buying Guide for the Best Whole House Generators

Choosing the right whole-house generator is crucial to ensure that your home remains powered during outages. A whole-house generator can provide peace of mind by keeping your essential appliances and systems running smoothly. When selecting a generator, it's important to consider several key specifications to ensure you get the best fit for your needs. Understanding these specifications will help you make an informed decision and choose a generator that meets your power requirements and preferences.
Power Output (Wattage)Power output, measured in watts (W), indicates how much electricity the generator can produce. This is important because it determines how many and which types of appliances and systems you can run simultaneously. Generators typically range from 5,000 to 20,000 watts or more. For small homes or essential circuits, a generator with 5,000 to 7,500 watts may suffice. Medium-sized homes might need 10,000 to 15,000 watts, while larger homes with multiple high-power appliances may require 20,000 watts or more. Assess your power needs by listing essential devices and their wattage to choose the right generator.
Fuel TypeWhole-house generators can run on various fuel types, including natural gas, propane, and diesel. The fuel type affects the generator's efficiency, cost, and convenience. Natural gas is often preferred for its continuous supply and lower emissions, making it a good choice for homes with a natural gas line. Propane is a clean-burning alternative that can be stored in large tanks, suitable for areas without natural gas access. Diesel generators are known for their durability and efficiency but may require more maintenance. Choose a fuel type based on availability, storage, and your environmental preferences.
Run TimeRun time refers to how long a generator can operate on a full tank of fuel or continuous fuel supply. This is important for ensuring that your home remains powered during extended outages. Generators with longer run times reduce the need for frequent refueling or maintenance. Run times can vary widely, with some generators capable of running for 24 hours or more on a single tank. Consider your typical outage duration and choose a generator with a run time that matches your needs to avoid interruptions.
Automatic Transfer Switch (ATS)An Automatic Transfer Switch (ATS) is a device that automatically switches the power supply from the grid to the generator during an outage. This is important for convenience and safety, as it ensures a seamless transition without manual intervention. ATS systems can vary in their capabilities, with some offering advanced features like load management and remote monitoring. For most homeowners, a basic ATS that provides automatic switching will suffice. However, if you have specific power management needs or want added convenience, consider a more advanced ATS.
Noise LevelNoise level, measured in decibels (dB), indicates how loud the generator will be during operation. This is important for maintaining a comfortable living environment and adhering to local noise regulations. Generators can range from 50 dB (similar to a quiet conversation) to over 80 dB (similar to a lawnmower). If noise is a concern, look for generators with lower decibel ratings or those designed with noise-reducing features. Consider the placement of the generator and choose a model that balances power output with acceptable noise levels for your home.
Size and InstallationThe size and installation requirements of a whole-house generator are important for ensuring it fits within your available space and complies with local codes. Generators come in various sizes, and larger units may require more space and specific installation considerations. Professional installation is often recommended to ensure safety and proper operation. Assess the available space around your home and consult with a professional to determine the best location and installation requirements for your chosen generator. This will help you avoid potential issues and ensure a smooth setup process.