10 Best Generac Generators 2026 in the United States
#1
Winner
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
The Generac Guardian 26kW Home Standby Generator is a solid choice for homeowners needing reliable whole-house backup power during outages. It delivers a strong 26,000 watts, enough to keep most household systems running smoothly. The generator runs on natural gas or propane, which are convenient and commonly available fuel options. It features a durable all-aluminum housing designed to withstand outdoor conditions and operates quietly, making it less disruptive in residential areas. Starting is electronic and automatic, so it powers up quickly and without manual effort during power failures.
Rating
10.0
Chosen by1,116
Power Output (Wattage)
Fuel Type
Runtime
Most important from
55 reviews
#2
Generac 18kW Home Standby Generator, Cellular Connectivity, Easy To Use, Whole House Power Backup, Smart Outage Solution
The Generac 18kW Home Standby Generator is designed to provide reliable whole-house backup power during outages, making it a strong choice for homeowners who want continuous comfort and connectivity. With an 18,000-watt output, it can easily handle essential appliances and systems in a typical household. It runs on fuel with an electronic fuel and ignition control system that enhances fuel efficiency and lowers emissions, helping reduce operating costs over time. The generator features automatic start capabilities, detecting outages and powering up without user intervention, which adds convenience and peace of mind.
Rating
9.7
Power Output (Wattage)
Noise Level
Start Type
Most important from
1 reviews
#3
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
The Generac 7043 22kW Air Cooled Guardian Series Home Standby Generator is a robust option for residential use, delivering high-quality 22,000 watts of power. It features True Power Technology, ensuring clean and stable power with less than 5% total harmonic distortion, making it safe for sensitive electronics. The generator operates on either natural gas or LP gas, providing flexibility depending on fuel availability.
Rating
8.8
Power Output (Wattage)
Noise Level
Start Type
Most important from
240 reviews
Top 10 Best Generac Generators 2026 in the United States
#1
Winner
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
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
Power Output (Wattage): 26000 watts
Fuel Type: Natural or LP Gas
Runtime: 12 minutes
Portability: Not portable
Start Type: Electronic, automatic
Maintenance and Service: G-Force engine, low oil shutdown
Chosen by 1116 this week
Generac 18kW Home Standby Generator, Cellular Connectivity, Easy To Use, Whole House Power Backup, Smart Outage Solution
Generac 18kW Home Standby Generator, Cellular Connectivity, Easy To Use, Whole House Power Backup, Smart Outage Solution
Power Output (Wattage): 18000 watts
Fuel Type: Fuel Powered
Portability: Not portable
Noise Level: Super quiet
Start Type: Automatic start
Maintenance and Service: Periodic servicing; app alerts
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
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
Power Output (Wattage): 22000 watts
Fuel Type: Natural Gas or LP Gas
Portability: 466 Pounds
Start Type: Electric start
Maintenance and Service: G-Force Engine, 5-year warranty
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
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
Power Output (Wattage): 15500 Watts
Fuel Type: Gasoline
Runtime: 11 hours
Portability: 450 pounds
Start Type: Electric start
Maintenance and Service: Hour meter, low-oil shutdown
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
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
Power Output (Wattage): 24000 watts
Fuel Type: Natural Gas or LP Gas
Portability: Not portable
Start Type: Electronic
Maintenance and Service: 5-year warranty, reduced maintenance
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Generac 22,500 Starting Watt Portable Gas Generator - Electric Start - Home Backup or RV Ready - Heavy Duty Frame - Quiet, Long Runtime, Emergency Power - 49-State Compliant
Generac 22,500 Starting Watt Portable Gas Generator - Electric Start - Home Backup or RV Ready - Heavy Duty Frame - Quiet, Long Runtime, Emergency Power - 49-State Compliant
Power Output (Wattage): 18000 watts
Fuel Type: Gasoline
Runtime: 9 hours
Portability: Portable
Start Type: Electric start
Maintenance and Service: Regular oil checks and changes
Generac Guardian 26kW Home Standby Generator - Automatic Whole House Backup Power for Storms, Emergencies, and Outages, WiFi Enabled, Runs on Natural Gas or Liquid Propane, Quiet Operation
Generac Guardian 26kW Home Standby Generator - Automatic Whole House Backup Power for Storms, Emergencies, and Outages, WiFi Enabled, Runs on Natural Gas or Liquid Propane, Quiet Operation
Power Output (Wattage): 26 Kilowatts
Fuel Type: Natural Gas or LP Gas
Portability: Not portable
Start Type: Electric Start
Maintenance and Service: Wi-Fi alerts
Generac Guardian 18kW 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
Generac Guardian 18kW 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
Power Output (Wattage): 18000 Watts
Fuel Type: Natural or LP Gas
Portability: Not portable
Noise Level: Low
Start Type: Automatic
Maintenance and Service: 5 Year Limited Warranty
20kW Standby Generator with 200amp TS
20kW Standby Generator with 200amp TS
Power Output (Wattage): 20 kW
Fuel Type: Natural Gas or Propane
Portability: Limited
Noise Level: Moderately loud
Start Type: Automatic
Maintenance and Service: Minimal maintenance
#10
Generac 7042 22Kw Standby Generator - Clean and Best in Class Power Quality - Reliable Power - User-Friendly Control
Generac 7042 22Kw Standby Generator - Clean and Best in Class Power Quality - Reliable Power - User-Friendly Control
Power Output (Wattage): 22 Kilowatts
Fuel Type: Natural or LP gas
Portability: Stationary
Start Type: Electronic ignition
Maintenance and Service: Pro installation and regular maintenance
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Buying Guide for the Best Generac Generators
When it comes to picking a Generac generator, it's important to understand your power needs and the different features that can make a generator more suitable for your specific situation. Generac offers a variety of generators, each designed to meet different requirements, from home backup power to portable power solutions. By understanding the key specifications and how they relate to your needs, you can make an informed decision and choose the best generator for you.Power Output (Wattage)Power output, measured in watts, indicates how much electrical power the generator can produce. This is crucial because it determines what and how many devices or appliances you can run simultaneously. Generators come in different wattage ranges: low (up to 3,000 watts), medium (3,000 to 7,000 watts), and high (over 7,000 watts). For basic needs like running a few lights and small appliances, a low-wattage generator may suffice. For running multiple large appliances or whole-house backup, a medium to high-wattage generator is necessary. Assess your power needs by listing the essential devices you want to power and their wattage requirements.
Fuel TypeGenerators can run on various types of fuel, including gasoline, propane, natural gas, and diesel. The fuel type affects the generator's runtime, efficiency, and convenience. Gasoline is widely available but has a shorter shelf life. Propane and natural gas are cleaner and have longer shelf lives, with natural gas offering the convenience of a continuous supply if you have a gas line. Diesel is efficient and has a longer shelf life but is less common for residential use. Choose a fuel type based on availability, storage, and your preference for convenience and maintenance.
RuntimeRuntime refers to how long a generator can operate on a full tank of fuel. This is important for ensuring continuous power during outages. Generators with longer runtimes are more convenient as they require less frequent refueling. Runtime can vary based on the load and fuel type. For occasional use or short outages, a generator with a shorter runtime may be sufficient. For extended outages or continuous use, look for a generator with a longer runtime to minimize interruptions.
PortabilityPortability is a key factor if you need a generator that can be easily moved or transported. Portable generators are typically smaller, lighter, and equipped with wheels and handles. They are ideal for outdoor activities, job sites, or temporary power needs. Stationary or standby generators are larger and permanently installed, providing automatic backup power for homes or businesses. Consider how and where you will use the generator to determine if portability is a priority.
Noise LevelNoise level, measured in decibels (dB), indicates how loud the generator will be during operation. This is important for comfort and compliance with local noise regulations. Generators can range from very quiet (below 60 dB) to quite loud (above 80 dB). For residential areas or camping, a quieter generator is preferable to avoid disturbing neighbors or wildlife. For construction sites or remote locations, noise may be less of a concern. Consider where you will use the generator and choose a noise level that suits your environment.
Start TypeGenerators can have different start types, including manual recoil start, electric start, and automatic start. Manual recoil start requires pulling a cord, which can be physically demanding. Electric start uses a push-button or key, making it easier to operate. Automatic start is typically found in standby generators and activates automatically during a power outage. Choose a start type based on your preference for ease of use and the generator's intended application. For frequent or emergency use, electric or automatic start is more convenient.
Maintenance and ServiceRegular maintenance is essential to keep your generator running smoothly and extend its lifespan. Some generators come with features that make maintenance easier, such as low-oil shutoff, maintenance reminders, and easy-access panels. Consider the availability of service centers and replacement parts for the brand you choose. If you prefer minimal maintenance, look for generators with user-friendly features and good manufacturer support. Regularly check and follow the maintenance schedule to ensure reliable performance.