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10 Best Portable Whole House Generator 2025 in the United States

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Our Top Picks

#1

Winner

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

Rating
10.0
Chosen by1,148
Power Output (Wattage)
Fuel Type
Noise Level

Most important from
420 reviews

Power Output (Wattage)
This model replaces older generators effectively, delivering trusted whole-house backup power that users describe as a lifesaver during outages.
Fuel Type
Installation involves professional setup including gas line and transfer switch wiring, reflecting its design as a permanent home backup system.
Noise Level
Operating noise is impressively low; even standing close to the unit, it runs quietly enough that it’s barely noticeable indoors.
Starting Mechanism
The generator reliably starts within seconds of an outage and runs smoothly, automatically shutting off when utility power returns.

The Generac Guardian 24kW Home Standby Generator is designed to provide reliable, whole-house backup power during outages. It delivers a strong 24,000 watts of clean and stable electricity, enough to keep most homes fully powered. It runs on natural gas or liquid propane, which are convenient fuel options that can keep your home running for extended periods without refueling.

The built-in Wi-Fi connectivity allows you to monitor the generator remotely, so you can check its status and receive maintenance alerts from anywhere, adding extra peace of mind, especially if you travel frequently. The generator features an electronic ignition system, making it easy to start automatically when power goes out. Safety is addressed with the included 200 Amp transfer switch, which helps protect your home’s electrical system by safely switching power sources.

This unit is quite heavy at 455 pounds, so it’s meant to be permanently installed outside by a licensed electrician. Generac’s G-Force engines are known for running quieter than older models. The generator comes with a five-year limited warranty, reflecting its durable, high-quality American engineering. This model is ideal for homeowners looking for a dependable, automatic backup power solution that covers their entire house rather than a portable option for camping or job sites.

Rating
10.0
Chosen by1,148
Power Output (Wattage)
Fuel Type
Noise Level

Most important from
420 reviews

Power Output (Wattage)
This model replaces older generators effectively, delivering trusted whole-house backup power that users describe as a lifesaver during outages.
Fuel Type
Installation involves professional setup including gas line and transfer switch wiring, reflecting its design as a permanent home backup system.
Noise Level
Operating noise is impressively low; even standing close to the unit, it runs quietly enough that it’s barely noticeable indoors.
Starting Mechanism
The generator reliably starts within seconds of an outage and runs smoothly, automatically shutting off when utility power returns.
#2

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

Rating
9.7
Fuel Type
Run Time
Portability

Most important from
237 reviews

Fuel Type
Runs daily for business use; despite being loud, it's easy to operate and reliable with non-ethanol fuel and regular oil changes.
Run Time
Quality is impressive, with almost 500 hours of use and no issues, making it a solid investment compared to other brands.
Portability
Well-built with a sturdy construction and large wheels that make it easier to move around.
Noise Level
Runs daily for business use; despite being loud, it's easy to operate and reliable with non-ethanol fuel and regular oil changes.
Starting Mechanism
Easy to start and performs exceptionally well, providing peace of mind during power outages.

The Generac 7705 GP15500EFI is a robust portable generator that shines in its power output and safety features, making it a solid choice for both emergency backup and job site applications. With a powerful 15,500-watt output and an impressive starting wattage of 19,300 watts, it can easily handle most household appliances, tools, and other power needs during outages or projects. Its electronic fuel injection engine enhances performance efficiency, ensuring you get the most out of your fuel.

A standout feature is the integrated COsense technology, which actively monitors carbon monoxide levels, providing an added layer of safety during operation. This is especially crucial in residential settings where carbon monoxide can pose a serious risk. The generator also offers a commendable runtime of up to 11 hours, depending on the load, thanks to its 5-gallon fuel tank.

Portability is another strength, as the unit is designed with durable, never-flat wheels that make transportation easier. However, its weight of 450 pounds can present challenges for some users when moving it around, especially in uneven terrains. The noise level, while not specified, tends to be higher in powerful generators like this one, which might be a consideration in quieter neighborhoods. Additionally, the generator's bulkiness may limit its use in smaller spaces.

Rating
9.7
Fuel Type
Run Time
Portability

Most important from
237 reviews

Fuel Type
Runs daily for business use; despite being loud, it's easy to operate and reliable with non-ethanol fuel and regular oil changes.
Run Time
Quality is impressive, with almost 500 hours of use and no issues, making it a solid investment compared to other brands.
Portability
Well-built with a sturdy construction and large wheels that make it easier to move around.
Noise Level
Runs daily for business use; despite being loud, it's easy to operate and reliable with non-ethanol fuel and regular oil changes.
Starting Mechanism
Easy to start and performs exceptionally well, providing peace of mind during power outages.
#3

DuroMax XP16000iH 16,000-Watt Dual Fuel Portable Digital Inverter 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
187 reviews

Power Output (Wattage)
Delivers powerful performance capable of running a 2000 square foot home and heavy loads at high elevation.
Fuel Type
Dual fuel flexibility and inverter technology provide clean, steady power safe for sensitive electronics.
Run Time
Runtime of about 10 hours on a full tank is decent but requires planning for longer outages.
Portability
Despite its portability label, the 368-pound weight makes it cumbersome to move around.
Noise Level
Generator operates quietly and includes helpful features like a digital control center and carbon monoxide sensor.
Starting Mechanism
Remote electric start with key fob adds convenient, modern usability.
Safety Features
Generator operates quietly and includes helpful features like a digital control center and carbon monoxide sensor.

The DuroMax XP16000iH is a powerful portable generator delivering up to 16,000 starting watts and 13,000 running watts, making it suitable for whole-home backup during outages or for heavy-duty outdoor use like job sites or RV camping. Its dual fuel capability lets you run it on gasoline or propane, offering flexibility depending on your fuel availability or preference. The generator also uses inverter technology, which means it provides clean, steady power safe for sensitive electronics such as computers and TVs.

Starting the generator is convenient with its remote electric start and the included battery tender helps keep the battery charged and ready. Safety is well-covered with features like an automatic low oil shutoff and a built-in carbon monoxide sensor for peace of mind. The digital control center gives clear info on runtime, load, and voltage.

This model is quite heavy at 368 pounds, making it less easy to move around despite being called portable. The runtime is about 10 hours on a full 10.5-gallon tank, which is decent but you’ll need to plan for refueling during longer power outages. The DuroMax XP16000iH represents a solid choice if you need a high-capacity, dual fuel generator capable of running an entire home or heavy equipment. It is best suited for users who prioritize power and fuel flexibility over light weight or extreme portability.

Rating
8.5
Power Output (Wattage)
Fuel Type
Run Time

Most important from
187 reviews

Power Output (Wattage)
Delivers powerful performance capable of running a 2000 square foot home and heavy loads at high elevation.
Fuel Type
Dual fuel flexibility and inverter technology provide clean, steady power safe for sensitive electronics.
Run Time
Runtime of about 10 hours on a full tank is decent but requires planning for longer outages.
Portability
Despite its portability label, the 368-pound weight makes it cumbersome to move around.
Noise Level
Generator operates quietly and includes helpful features like a digital control center and carbon monoxide sensor.
Starting Mechanism
Remote electric start with key fob adds convenient, modern usability.
Safety Features
Generator operates quietly and includes helpful features like a digital control center and carbon monoxide sensor.

Buying Guide for the Best Portable Whole House Generator

Choosing the right portable whole-house generator can be a daunting task, but with the right approach, you can find a model that fits your needs perfectly. A portable whole-house generator is a crucial investment, especially if you live in an area prone to power outages. It ensures that your home remains powered, keeping your essential appliances and systems running smoothly. To make an informed decision, you need to consider several key specifications that will determine the generator's performance and suitability for your home. Here are the most important specs to consider and how to navigate them.
Power Output (Wattage)Power output, measured in watts, indicates how much electricity the generator can produce. This is crucial because it determines how many and what type of appliances you can run simultaneously. Generators typically range from 3,000 to 20,000 watts. For small homes or essential appliances, a generator with 3,000 to 5,000 watts might suffice. Medium-sized homes may require 5,000 to 10,000 watts, while larger homes or those with high power demands might need 10,000 to 20,000 watts. Assess your power needs by listing the essential appliances and their wattage to choose the right generator.
Fuel TypeGenerators can run on various fuel types, including gasoline, propane, natural gas, and diesel. 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. Propane is cleaner and has a longer 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. Diesel is efficient and has a long shelf life but can be more expensive. Choose a fuel type based on availability, storage, and your preference for convenience and efficiency.
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. Run times can vary significantly, from a few hours to over 24 hours. For short outages, a generator with a run time of 6-10 hours may be sufficient. For longer outages, look for models that offer 12-24 hours of run time. Consider your typical power outage duration and how often you can refuel the generator to determine the appropriate run time for your needs.
PortabilityPortability is a key feature of these generators, as it allows you to move the unit to different locations as needed. This is especially important if you need to transport the generator for camping or other activities. Look for features like wheels, handles, and overall weight. Lighter models with sturdy wheels and ergonomic handles are easier to move. If you plan to use the generator in multiple locations, prioritize portability. For stationary use, portability may be less critical, but still consider ease of movement for maintenance and storage.
Noise LevelNoise level, measured in decibels (dB), indicates how loud the generator will be during operation. This is important for maintaining a comfortable environment, especially if the generator will be used near living spaces. Generators can range from 50 dB (quiet) to over 80 dB (loud). For residential use, a quieter generator (50-65 dB) is preferable to avoid disturbing your household and neighbors. If noise is not a major concern, you may opt for a louder model. Consider where the generator will be placed and how much noise you can tolerate.
Starting MechanismThe starting mechanism determines how you start the generator. Common options include manual recoil start, electric start, and remote 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. Remote start allows you to start the generator from a distance, adding convenience. Choose a starting mechanism based on your preference for ease of use and physical capability. Electric and remote starts are generally more user-friendly, especially for those who may have difficulty with manual starts.
Safety FeaturesSafety features are essential for protecting both the generator and your home. Look for features like automatic shutoff, overload protection, and low-oil shutoff. Automatic shutoff turns the generator off if it detects dangerous conditions, such as carbon monoxide buildup. Overload protection prevents the generator from being damaged by excessive power demand. Low-oil shutoff protects the engine by turning it off when oil levels are too low. Prioritize generators with comprehensive safety features to ensure safe operation and longevity of the unit.

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