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10 Best Auto Start Generator 2026 in the United States

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Our Top Picks

#1

Winner

Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered

Rating
10.0
Chosen by1,101
Power Output (Wattage)
Fuel Type
Run Time

Most important from
27404 reviews

Power Output (Wattage)
Power output is more than sufficient to run an entire home, making it a strong choice for backup during outages.
Fuel Type
Its dual-fuel capability provides excellent flexibility to run on propane or gasoline depending on availability.
Run Time
Fuel efficiency is outstanding, allowing for hours of continuous operation without frequent refueling.
Noise Level
The unit runs surprisingly quietly compared to other generators, making it less intrusive during use.
Automatic Transfer Switch (ATS)
Connecting the generator to a manual transfer switch offers a cost-effective alternative to whole-house systems while maintaining functionality.
Portability
Despite its weight, the generator is very mobile once the wheels and handle are attached, facilitating easy transport.
Maintenance and Durability
The trickle battery charger ensures the generator remains ready for use at any time without battery concerns.

The Westinghouse 12500 Watt Dual Fuel Portable Generator offers a robust power output, delivering 9500 running watts on gasoline and 8500 on propane, with peak outputs up to 12500 watts, making it well-suited for home backup during power outages. Its dual fuel capability allows you to switch between gas and propane, providing added flexibility depending on fuel availability. Run time is solid, with up to 12 hours on a full 6.6-gallon tank when using gasoline, which is convenient for extended outages.

The generator features a remote electric start with a key fob, making it easy to power on without manual effort, and it is transfer switch ready, allowing safe connection to your home’s electrical system. The engine is a heavy-duty 457cc 4-stroke with features like automatic low oil shutdown and a digital hour meter, which help protect the unit and inform maintenance needs. Several outlets, including GFCI-protected household receptacles and RV-ready plugs, offer versatile connection options.

Weighing 210 pounds, it is portable but may require two people or a dolly to move comfortably. Maintenance is straightforward with included tools and oil, and a 3-year warranty adds peace of mind. This generator is a strong choice for homeowners needing reliable and flexible backup power, especially when convenience features like remote start and transfer switch compatibility are priorities; however, consider its heavier weight when planning its placement.

Rating
10.0
Chosen by1,101
Power Output (Wattage)
Fuel Type
Run Time

Most important from
27404 reviews

Power Output (Wattage)
Power output is more than sufficient to run an entire home, making it a strong choice for backup during outages.
Fuel Type
Its dual-fuel capability provides excellent flexibility to run on propane or gasoline depending on availability.
Run Time
Fuel efficiency is outstanding, allowing for hours of continuous operation without frequent refueling.
Noise Level
The unit runs surprisingly quietly compared to other generators, making it less intrusive during use.
Automatic Transfer Switch (ATS)
Connecting the generator to a manual transfer switch offers a cost-effective alternative to whole-house systems while maintaining functionality.
Portability
Despite its weight, the generator is very mobile once the wheels and handle are attached, facilitating easy transport.
Maintenance and Durability
The trickle battery charger ensures the generator remains ready for use at any time without battery concerns.
#2

Westinghouse 13500 Peak Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered

Rating
9.4
Power Output (Wattage)
Fuel Type
Run Time

Most important from
27404 reviews

Power Output (Wattage)
Delivers strong, reliable power capable of running most household appliances without strain.
Fuel Type
The dual fuel capability and included accessories make it easy to start and operate right out of the box.
Run Time
Runs smoothly with a large fuel tank offering up to 19 hours of continuous use on gasoline.
Noise Level
Noise level is moderate and manageable, quieter compared to many generators in this power class.
Portability
Weighing 230 pounds, it’s heavy but the wheel kit and handle help make moving it manageable.
Maintenance and Durability
Durable, rugged construction ensures it can withstand harsh environments and extended use.

The Westinghouse 13500 Peak Watt Dual Fuel Generator delivers strong power, offering 13,500 peak watts and 10,500 running watts on gasoline, with slightly lower output on propane. This makes it a solid choice if you need to run several household appliances or essential systems during an outage. It runs on both gasoline and propane, giving you fuel flexibility which is handy if one type becomes scarce. The large 9.5-gallon fuel tank provides up to 19 hours of continuous use on gasoline, meaning it can operate through most nights without refueling.

It features a remote electric start with a key fob, making it easier to power up the generator without manual effort—an important convenience for automatic backup needs. The built-in transfer switch ready outlet simplifies connecting to your home’s electrical system safely. Its heavy-duty 500cc engine includes safety features like automatic low oil shutdown and a carbon monoxide sensor, improving reliability and peace of mind. Weighing 230 pounds, this generator is quite heavy and may be difficult to move around frequently, limiting portability. Generators with this size engine tend to be moderately loud, so expect some noise during use.

Maintenance is user-friendly with included tools and clear instructions, and the 3-year warranty shows the brand's confidence in durability. This model is well suited for homeowners wanting a powerful, flexible, and relatively easy-to-operate backup generator, especially if remote start and dual fuel options are priorities. However, if you need something lighter or quieter for frequent transport, you might want to consider other models.

Rating
9.4
Power Output (Wattage)
Fuel Type
Run Time

Most important from
27404 reviews

Power Output (Wattage)
Delivers strong, reliable power capable of running most household appliances without strain.
Fuel Type
The dual fuel capability and included accessories make it easy to start and operate right out of the box.
Run Time
Runs smoothly with a large fuel tank offering up to 19 hours of continuous use on gasoline.
Noise Level
Noise level is moderate and manageable, quieter compared to many generators in this power class.
Portability
Weighing 230 pounds, it’s heavy but the wheel kit and handle help make moving it manageable.
Maintenance and Durability
Durable, rugged construction ensures it can withstand harsh environments and extended use.
#3

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

Rating
8.5
Power Output (Wattage)
Fuel Type
Run Time

Most important from
2361 reviews

Power Output (Wattage)
Delivers strong, reliable power with smooth operation on propane, capable of handling whole-house AC, water heaters, and electric stoves with ease.
Fuel Type
Delivers strong, reliable power with smooth operation on propane, capable of handling whole-house AC, water heaters, and electric stoves with ease.
Run Time
The built-in digital display effectively monitors voltage and runtime, aiding in load management and maintenance scheduling.
Noise Level
Noise levels are noticeable but expected given the powerful 670cc engine and open-frame design.
Automatic Transfer Switch (ATS)
The electric choke feature automatically adjusts from choke to run, simplifying startup without manual intervention.
Portability
Though heavy at 345 pounds, the wheel and handle kit make it manageable to move around job sites or storage areas.
Maintenance and Durability
Customer service is responsive and helpful, promptly addressing missing parts and providing clear maintenance guidance.

The DuroMax XP15000HX is a powerful portable generator offering a strong 15,000 watts of starting power and 12,000 watts running wattage, making it suitable for whole-home backup or heavy-duty commercial use. Its dual-fuel capability allows you to use gasoline or propane, which adds flexibility and convenience—propane burns cleaner and lasts longer in storage. This generator features a remote electric start and a push-button interface that makes switching fuel sources quick and easy. It is transfer switch ready with multiple outlets, including a 50-amp outlet, which means it can connect directly to home electrical systems for a smooth power transfer during outages.

The built-in digital display monitors voltage and hours run, helping you keep track of maintenance needs. Safety is a priority with its CO Alert feature that automatically shuts down the generator if harmful carbon monoxide levels are detected. Although it weighs 345 pounds, it comes with a wheel and handle kit to improve portability, but it’s still quite heavy compared to smaller models. Maintenance should be manageable thanks to the all-copper windings and a reliable 670cc engine designed for durability.

This model is suited for those needing a robust, reliable power source for whole-home backup or large job sites, especially if you want the convenience of dual fuel and automatic safety features. If you require a lighter or quieter generator, this might feel bulky and noisy.

Rating
8.5
Power Output (Wattage)
Fuel Type
Run Time

Most important from
2361 reviews

Power Output (Wattage)
Delivers strong, reliable power with smooth operation on propane, capable of handling whole-house AC, water heaters, and electric stoves with ease.
Fuel Type
Delivers strong, reliable power with smooth operation on propane, capable of handling whole-house AC, water heaters, and electric stoves with ease.
Run Time
The built-in digital display effectively monitors voltage and runtime, aiding in load management and maintenance scheduling.
Noise Level
Noise levels are noticeable but expected given the powerful 670cc engine and open-frame design.
Automatic Transfer Switch (ATS)
The electric choke feature automatically adjusts from choke to run, simplifying startup without manual intervention.
Portability
Though heavy at 345 pounds, the wheel and handle kit make it manageable to move around job sites or storage areas.
Maintenance and Durability
Customer service is responsive and helpful, promptly addressing missing parts and providing clear maintenance guidance.

Buying Guide for the Best Auto Start Generator

Choosing the right auto-start generator involves understanding your power needs, the environment where it will be used, and the features that will make operation convenient and efficient. Auto-start generators are designed to automatically start when there is a power outage, providing a seamless transition to backup power. Here are the key specifications to consider when selecting an auto-start generator and how to navigate them to find the best fit for your needs.
Power Output (Wattage)Power output, measured in watts, indicates how much electricity the generator can produce. This is crucial because it determines what and how many devices you can run simultaneously. Generators come in various wattage ranges: small (up to 2000 watts) for basic needs like lights and small appliances, medium (2000-7000 watts) for larger appliances and multiple devices, and large (over 7000 watts) for whole-house power. Assess your power needs by listing the devices you want to run and their wattage requirements, then choose a generator that can handle the total load.
Fuel TypeGenerators can run on different types of fuel, including gasoline, diesel, propane, and natural gas. The fuel type affects the generator's efficiency, cost of operation, and availability of fuel. Gasoline is widely available but has a shorter shelf life; diesel is more efficient and has a longer shelf life but can be more expensive; propane is clean-burning and has an indefinite shelf life but requires a storage tank; natural gas is convenient if you have a gas line but may not be available in all areas. Choose a fuel type based on availability, storage, and your preference for maintenance and operation.
Run TimeRun time refers to how long the generator can operate on a full tank of fuel. This is important for ensuring continuous power during extended outages. Generators with longer run times are more convenient as they require less frequent refueling. Run times can vary from a few hours to over 24 hours. Consider how long you typically need backup power and choose a generator with a run time that matches your needs, keeping in mind that higher power output often means shorter run times.
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). If you plan to use the generator in a residential area or near living spaces, a quieter model is preferable. Consider where you will place the generator and how noise might affect you and your neighbors.
Automatic Transfer Switch (ATS)An Automatic Transfer Switch (ATS) is a device that automatically switches the power source from the main grid to the generator during an outage. This feature is essential for auto-start generators as it ensures a seamless transition without manual intervention. Some generators come with an ATS included, while others require a separate purchase. Ensure the generator you choose is compatible with an ATS and consider the ease of installation and operation.
PortabilityPortability refers to how easy it is to move the generator. This is important if you need to transport the generator to different locations or store it when not in use. Portable generators typically have wheels and handles, making them easier to move. Consider the weight and size of the generator, and whether you need a stationary unit for home use or a portable one for flexibility.
Maintenance and DurabilityMaintenance and durability are important for the long-term reliability of the generator. Look for features like low-oil shutoff, which protects the engine, and easy access to parts for maintenance. Durable materials and construction will ensure the generator can withstand regular use and harsh conditions. Consider how often you will use the generator and choose one that offers the right balance of durability and ease of maintenance.

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