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10 Best Auto Start Generator 2025 in the United States

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Our Top Picks

#1

Winner

DuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator - Gas & Propane, Electric Start, Whole Home Backup Power, Transfer Switch Ready, RV & Emergency Ready

Rating
9.8
Chosen by1,247
Power Output (Wattage)
Noise Level
Portability

Most important from
3588 reviews

Power Output (Wattage)
These generators are super powerful and easily ran an RV with 3 AC units during the brutal Phoenix summer months.
Noise Level
Despite its power, the generator is a bit loud, and an improved muffler would be a welcome addition in future models.
Portability
The generator's overall quality and features are impressive, making it a great purchase for home power backup and portable power needs.

The DuroMax XP13000EH is a robust and versatile 13,000-Watt Dual Fuel Portable Generator, suitable for whole home backup power, RV trips, and emergency situations. One of its primary strengths is its high power output, capable of running essential appliances and devices during power outages. The dual fuel capability allows it to run on either gasoline or propane, providing flexibility based on fuel availability and preferences. The electric start feature, coupled with a user-friendly front interface, makes it easy to operate. It also comes equipped with a variety of outlets, including a 50 amp outlet ready for an automatic transfer switch, enhancing its convenience for homeowners.

Constructed with a heavy-duty all-metal frame and 100% copper windings, the generator is built to last and withstand harsh conditions. It has a set of no-flat tires, adding to its portability despite its hefty 234-pound weight. Maintenance is eased with features like low oil shutdown and an hour meter.

Some drawbacks include its substantial weight, which might make it challenging to move for some users, and a potentially high noise level due to its powerful engine. The DuroMax XP13000EH is ideal for those in need of a powerful and reliable backup solution for their home or for use in various outdoor settings where consistent power is essential.

Rating
9.8
Chosen by1,247
Power Output (Wattage)
Noise Level
Portability

Most important from
3588 reviews

Power Output (Wattage)
These generators are super powerful and easily ran an RV with 3 AC units during the brutal Phoenix summer months.
Noise Level
Despite its power, the generator is a bit loud, and an improved muffler would be a welcome addition in future models.
Portability
The generator's overall quality and features are impressive, making it a great purchase for home power backup and portable power needs.
#3

Generac Guardian 10kW Home Standby Generator with 100 Amp Transfer Switch, Durable All Aluminum, WiFi Enabled with G-Force Engine, Easy to Use, Whole House Power Backup, Smart Outage Solution - Bisque

Rating
9.4
Power Output (Wattage)
Noise Level
Automatic Transfer Switch (ATS)

Most important from
422 reviews

Power Output (Wattage)
It's a solid, heavy-duty unit that runs both 5-ton ACs and all normal house parts during summer testing.
Noise Level
Noise levels are noticeable when standing next to it, but it delivers powerful performance without interruption.
Automatic Transfer Switch (ATS)
The generator's automatic transfer switch ensures a smooth transition during outages, firing up in just 10 seconds.

The Generac Guardian 10kW Home Standby Generator is a robust solution for whole-house power backup, offering a high power output of 10,000 watts. It runs on natural gas or LP gas, providing flexibility in fuel options. One of its standout features is the Automatic Transfer Switch (ATS) with 100 Amp capacity, which ensures a seamless transition during power outages. The generator is designed for residential use, making it suitable for homeowners who need reliable backup power.

With its durable aluminum enclosure, it is built to withstand outdoor conditions, ensuring longevity and durability. Additionally, the generator features Wi-Fi connectivity for remote monitoring, allowing users to track performance and receive maintenance alerts from anywhere. This is particularly useful for those who travel frequently or want peace of mind when away from home.

The Generac's G-Force Engine is engineered for reliability and low maintenance, contributing to efficient operation and reduced noise levels, which is a significant advantage for residential settings. However, it's worth noting that the generator weighs 338 pounds, making it less portable and more challenging to move without assistance. Installation by a certified electrician is recommended, which could add to the initial setup cost. Despite these considerations, the 5-year limited warranty offers long-term assurance of the product's performance.

In summary, the Generac Guardian 10kW is a powerful, durable, and easy-to-use standby generator that excels in providing whole-house power backup, though its portability is limited and professional installation is advised.

Rating
9.4
Power Output (Wattage)
Noise Level
Automatic Transfer Switch (ATS)

Most important from
422 reviews

Power Output (Wattage)
It's a solid, heavy-duty unit that runs both 5-ton ACs and all normal house parts during summer testing.
Noise Level
Noise levels are noticeable when standing next to it, but it delivers powerful performance without interruption.
Automatic Transfer Switch (ATS)
The generator's automatic transfer switch ensures a smooth transition during outages, firing up in just 10 seconds.

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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