We may earn commissions on purchases made through qualifying links, at no extra charge to you. For more information, check out our Disclaimer.

No power for half an hour to an hour is bearable as long as your laptop or mobile phone is working. But the problem arises when the electric supply remains off for several hours. And certain home appliances need to remain on such as refrigerators to keep things fresh. So today we’ve picked 9 best 12000-watt generators for home use.

A 12000-watt generator is a lot. The power it offers is enough to run several heavy appliances of your home. Not only for whole-house backup, but a reliable 12kW generator is an excellent choice for commercial use.

No doubt, a 12000-watt home generator is capable of running several appliances at once. But with power comes the expense. While you might think about why to buy a high-watt unit just to power some appliances on power outage, the cost of running a 12kW generator is not much in the long run.

Unlike small electric or solar generators, you’ll not have to spend a thick wad of cash on its maintenance. 12000-watt generators are pretty tough and run smoothly with very little maintenance. And if you buy a good model, the only cost you’ll have to bear is of filling good fuel.

Best 12000 Watt Generator For Home Use

But we understand it can be a daunting task to find the best 12000-watt generator for the whole house, especially when there are so many options available. But you’ll not have to go through a sea of products when we have already done the tough job for you. After hours of research and studying, we’ve listed below some of the best 12kW generators.

Best Heavy Duty 12kW Generators for Home

So without wasting much time, let us go through the reviews below and help you pick the best generator for your home when you need electricity at most.

1) Durostar DS12000EH Portable Generator, Red/Black

Durostar DS12000EH Portable Generator, Red:Black

Be always prepared for sudden power outages with Durostar portable generator. Powered by a Durostar 457cc OHV engine, the unit is perfect to run an air conditioner, refrigerator, toaster oven, hairdryer, etc.

The panel comprises of 1x 240V 50A heavy-duty outlet, 1x 240V 30A twist lock, 1x 120V 30A twist lock, and 2x 120V 20A household outlet. So apart from powering multiple heavy-duty home appliances, Durostar 12000-watt dual fuel generator is an excellent choice for travel trailers, RVs, and construction sites.

Thanks to Durostar’s MX2 technology that delivers maximum power from each 120V outlet. And the best thing is, you can choose the generator to operate at 120V and 240V simultaneously to use both heavy home appliances and delicate electronics. Or keep it at 120V at full power for powering same-watt appliances.

Just like power selection, the Durastar 12kW home generator offers the flexibility of fuel choice. You can either use gasoline or propane to run the engine. The runtime for both gas and propane is up to 8 hours on 1/2 load with a full tank or 40 lbs propane tank. Such an impressive runtime is ideal for overnight use.

Our Verdict


  • 4-point fully isolated motor for quiet operation
  • The 4-stroke OHV engine is a true workhorse that provides plenty of power for home backup, RV, and job site use
  • MX2 technology lets you choose between 120V and 240V operating power
  • Low-oil shut off for longer engine life
  • Optional electric key start
  • Best dual fuel whole house generator with 12000 peak watts
  • Other features include oil warning light, volt meter, circuit breaker, DC charging, and auto Idle control
  • CARB compliant + EPA approved


  • Give it some “dry run” time before plugging heavy load(s) for a stable output
  • Instructions manual could have been better

Key Features:

  • 457 cc engine displacement
  • 18 HP
  • 9500 running wattage
  • 8.3-gallon fuel tank
  • 73dB noise level(from 23 feet)
  • 3-year limited warranty
  • Weighs 232 lb

2) All Power America 12000 Watt Dual Fuel Portable Generator with Electric Start

All Power America APGG12000GL 12000 Watt Dual Fuel Portable Generator with Electric Start

There’s no point in buying a whole hours backup generator if its control panel only has limited outlets. And if you wish to run multiple home appliances at once then go for All Power America 12000-watt dual fuel portable generator. The unit offers a total of 6 outlets that are perfect for a home/office backup.

The panel comprises of 4x AC 120V outlets, 1x 120V twist-lock outlet, and 1x 120V/240V twist-lock outlet. In addition to these 6 ports, there’s a 12V DC outlet to plugin electric kettle, mini vacuum cleaner, etc.

The powerful 459 cc OHV air-cooled engine is excellent for outdoor use. You can take it to the campsite, tailgating, and similar outdoor events. Instead of pulling cords, take advantage of its electric start to start the engine effortlessly.

Impressive runtime of up to 10 hours at 1/2 load on the full tank makes it an excellent choice for off-grid living. If not gasoline, the dual-fuel flexibility of the 12000w generator allows the use of a propane tank. The engine is rated at 9000W for gas while 7000W rated for LPG.

Our Verdict


  • Electric switch for starting the engine effortlessly
  • Come with battery, engine lubricant, rear wheels, and wheel kit
  • Never-flat tires are perfect to use the unit on a rough terrain
  • Auto idle control + auto voltage regulation delivers steady power to your heavy-appliances and protects them from overload damage
  • A small yet helpful hour meter on the panel shows for how long the generator is been on
  • Best 12000-watt dual fuel generator under $1000 for whole house
  • Features four AC 120V outlets that let you connect main appliances of the home


  • Not CARB compliant, however, is EPA approved
  • Lacks a 50A plug

Key Features:

  • 459 cc engine displacement
  • 15 HP
  • 8-gallon fuel tank
  • 76 dB operation volume
  • Built-in hour meter
  • 2-year limited manufacturer’s warranty
  • Weighs 230 pounds

3) DuroMax XP12000EH Dual Fuel Electric Start Portable Generator

DuroMax XP12000EH Generator-12000 Watt Gas or Propane Powered Home Back Up

Power is the top priority of many when it comes to run heavy home appliances. And Duromax 12000-watt dual fuel generator is a true workhorse when it comes to delivering stable output. With 12000-watt of surge power and 9500 running watts, this unit can handle anything from an air conditioner, refrigerator, microwave oven, 4-slice toaster, space heater, etc.

Thanks to Duromax’s 457 cc OHV engine that allows you to pull the engine up to the maximum 12000-watt of power. Besides, the individual power breaks on the panel protect the engine from overload damage and ensure its longevity.

While the heavy-duty frame protects the engine from sudden shocks, dust, and debris, the 4-point fully isolated motor minimizes noise. Speaking of noise, Duromax dual fuel 12kW generator runs at 72 dB from quite a distance. You cannot say the generator runs completely quiet, but with a noise-reducing muffler that utilizes a spark arrester, is approved for safe use in U.S national parks.

Duromax dual fuel outdoor generator includes a propane hose to connect a propane tank conveniently. Also, you’ll not have to go through the hassle of installing the regulator as it is already installed. Besides the propane hose, the box includes an oil funnel, spark plug wrench, battery, and wheel kit to get the unit started easily.

Our Verdict


  • Safety features include auto idle control, low oil shutdown, muffler, and overload protection
  • EPA approved + CARB compliant
  • Powerful engine displacement is great for halogen work light, large appliances, power tools, sump pump, well pump, air conditioners, etc
  • Best portable whole house generator with a user-friendly key electric start
  • Option to run either on gasoline or propane
  • Up to 10-hour runtime on gasoline(at 50% load) and up to 20-hour runtime on propane(at 50% load)
  • Individual breakers prevent overloading issue even on full load


  • Not the quietest but definitely powerful; the sound it produces is little less than of a lawnmower
  • Lacks an oil filter, plus, requires a frequent oil change

Key Features:

  • 457 cc engine
  • 18 HP
  • 8.3-gallon fuel tank
  • Electric start
  • 72 dB operational volume
  • 3-year residential warranty
  • Weighs 224 lbs

4) Champion Power Equipment 15,000/12,000-Watt Portable Generator with Electric Start and Lift Hook

Champion Power Equipment 100111 15,000/12,000-Watt Portable Generator with Electric Start and Lift Hook

Get all the power you need with the Champion gasoline generator. With a peak power of 15000 watts and running power of 12000 watts, this large generator provides stable power to run all major heavy appliances of your home. Be it air conditioner, refrigerator, microwave, ceiling fan, or even power tools, Champion heavy-duty generator is an excellent choice for homes with frequent power outages.

Credit for such a flawless performance goes to Champion’s 717 CC V-Twin engine. The engine is equipped with a reliable toggle switch which means you will not have to pull cords anymore. Simply press the electric button to start the engine easily. In addition to an electric start, the engine features an in-built cold start technology that helps to start the engine easily when the temperature is low.

5-mode Intelligauge helps to monitor the performance of your Champion 12000-watt gasoline generator. The Intelligauge keeps a track of voltage, hertz, and runtime hours to ensure the safety and longevity of both the generator engine and your expensive appliances.

But you’ll not have to worry about overload damage with this Champion generator as it features a built-in surge protector. This helps to prevent overloads and keeps your equipment safe from irregularity in voltage.

Our Verdict


  • Can handle all multiple outages at once like the sump pump, refrigerator, modem, window AC, well pump, blow dryer, and even central AC with manual transfer switch
  • EPA certified and CARB complaint
  • Covered outlets protect the ports from dust, debris, and water damage
  • Equipped with a lifting hook for safe and easy transportation from one job site to another
  • Best gas generator for home use with a durable steel frame
  • Includes 1.5-quart of 10W-30 engine oil, so all you’ll need is gasoline to start the machine
  • Up to 9 hours of runtime on a full tank at 50% load


  • Expensive

Key Features:

  • 717 cc engine
  • 10.9-gallon fuel tank capacity
  • Electric start
  • 78 dB operation volume
  • Built-in surge protector
  • 3-year limited warranty
  • Weighs 330 lbs

5) Pulsar G12KBN Heavy Duty Portable Dual Fuel Generator, Home Ready

Pulsar G12KBN Heavy Duty Portable Dual Fuel Generator - 9500 Rated Watts & 12000 Peak Watts

Bad weather is often followed by electricity cut for hours. And if you live in an area that gets hit by a hurricane or storm frequently, then it is good to keep a reliable heavy-duty generator at home like Pulsar G12KBN. The dual-fuel nature of the engine gives you the flexibility to use the fuel available at the moment.

The large 8-gallon fuel tank provides up to 12 hours of continuous operation at half load when using gasoline. This is great for people living off-grid or in an RV, where a high-watt supply is needed to run a few basic appliances.

Speaking of RV, the Pulsar 12000-watt portable generator is equipped with a 50 amp outlet. In short, you can directly connect the generator to your RV without getting any external kit. However, it is not safe to use inside an RV but you can surely keep the generator outdoors and connect the RV plug to the appropriate receptacle on the panel.

Pulsar’s never-go-flat wheels along with convenient drop-down handles let you transfer the heavy machine easily. Plus, the large 10-inch wheels ensure a smooth transfer of the unit on rough terrain.

Our Verdict


  • Safe and reliable electric start
  • The air-cooled engine can operate continuously for long hours
  • 3-in-1 digital meter with automatic voltage regulation
  • The panel comprises of 4x 120V 20A AC outlets, 1x 120V/240V 30A twist-lock outlet, 1x 120V/240V 50A outlet, and a 12V DC output
  • Reliable dual fuel generator with RV ready port
  • Up to 12 hours at 1/2 load(gas)
  • Drop-down handles with smooth-rolling 10-inch wheels
  • Comes with propane hose, spark plug wrench, 10mm combination wrench, and Phillips screwdriver


  • Runs loud
  • A bit costly

Key Features:

  • 457 cc engine displacement
  • 8-gallon tank
  • 4-stroke air-cooled OHV engine
  • Electric and recoil start
  • RV ready
  • 1-year limited warranty
  • Weighs 209 pounds

6) A-iPower SUA12000E 12,000-Watt Gasoline Powered Generator with Electric Start

A-iPower SUA12000EC 12000-Watt Gas Powered Generator W:Electric Start (CARB:EPA)

Never sit in the dark when there’s a sudden power outage with A-iPower 12000-watt gas-powered generator. With A-iPower SUA12000E, you will not have to struggle with the engine start by pulling cords multiple times. Equipped with a keyless one-touch push-button, you can get the engine started in seconds without straining your arm.

Damp weather can damage ports and degrade engine performance. But you’ll not have to worry about water damaging any of the ports as all the outlets are GFCI protected. In addition to that, the cord protective cover keeps all the wires easily concealed while providing protection against bad weather and keeps them neatly organized.

While many units feature a control panel on the bottom, the ergonomically angled control panel of the A-iPower 12kW gasoline generator provides easy, user-friendly access. You’ll not have to bend down every time just to view and plug the cable into the correct receptacle.

In addition to heavy-load receptacles, A-iPower gas-powered home generator features a DC adapter plug. You can use this plug for charging the battery or use it with your USB adapter to charge smartphones, laptops, etc. In short, the unit is great for running heavy appliances as well as sensitive devices.

Our Verdict


  • Low oil shutoff protects the engine from damage
  • Thick 1.1-inch tubular steel frame for protection and durability
  • Includes power cord with lighter plug + spark plug socket
  • Cover protected outlet provides added protection from the weather as well as keeps wires organized
  • Best 12000-watt gas generator under $1000 for home backup
  • Features a digital hour meter monitors runtime
  • Can run up to 8.5 hours at 50% load
  • Air-cooled OHV engine with reliable E-start
  • 9″ never-flat wheels for easy transportation


  • Not CARB complied
  • With operating noise at 78 dbA from 23 feet, it does not fall under quiet whole house generator for many buyers

Key Features:

  • 459 cc engine
  • 7.0-gallon fuel tank
  • Built-in fuel gauge
  • 78 dB sound rating(from 23 ft)
  • 2-year manufacturer’s warranty
  • Weighs 206 pounds

7) Westinghouse Heavy Duty Portable Generator 12500 Peak Watts, Electric Start, Transfer Switch Ready

Westinghouse Outdoor Power Equipment WGen9500 Heavy Duty Portable Generator

If you’re planning to buy a unit for outdoor use then Westinghouse’s heavy-duty portable generator is perfect. This gas-powered 12kW generator offers enormous power to run an RV and food trailer, while all the outlets are protected by a rubber cover to prevent them from dust, debris, and water damage.

Besides, Westinghouse WGen9500 comprises an RV-ready 120/240V 14-50R port that lets you connect the main cable of the RV to the panel directly. In short, you’ll not have to deal with extra connections to draw 12000-watts from the gasoline generator.

While the unit is heavy, Westinghouse WGen9500 includes a set of heavy-duty never-flat wheels to move it easily on rough terrain. Besides, the foam grip handle provides a soft grip while pushing the heavy unit around. Plus, there’s a lift bracket for easy loading and unloading of the portable generator to different job sites.

Westinghouse WGen9500 12000-watt gas-powered outdoor generator offers 3 ways to start the machine. You can either start the engine through the typical recoil method by pulling the cord or go for an electric start or use the remote start key fob. The bonus remote start key fob lets you start the gasoline generator conveniently from up to 260 ft away.

Our Verdict


  • Comes with an oil funnel, spark plug wrench, wheel kit, and a wireless remote
  • Push-button electric start with key fob lets you start the engine from quite a distance
  • The panel comprises of 2x GFCI 5-20R duplex outlets, 1x transfer switch ready 120/240V twist-lock, 1x 120/240V 14-50R receptacle, and 2x USB ports
  • Sturdy steel frame with soft foam grip and rugged never-flat wheels
  • Best 12000-watt gas generator with RV ready port
  • CARB compliant + EPA approved
  • VFT display gives you real-time updates with voltage output, frequency, and hours


  • Single fuel engine only
  • Runs a bit noisy

Key Features:

  • 457 cc engine displacement
  • 13.5 HP
  • 6.6-gallon fuel tank
  • 74 dB operational volume
  • 3-year limited warranty
  • Weighs 220 lbs

8) Generac Guardian Series Air-Cooled Home Standby Generator with Whole House 200 Amp Transfer Switch

Generac 7033 Guardian Series 11kW/10kW Air Cooled Home Standby Generator with Whole House 200 Amp Transfer Switch (not CUL)

Keep the essentials of your home running even on sudden power outages with the Generac backup home generator. The difference between a home backup generator and portable home generator is, backup units are fixed. And they are best installed by a professional electrician. Backup generators are great for home, office, and commercial use as they’re extremely easy to operate.

Here, the Generac air-cooled standby generator delivers best-in-class power quality with less than 5% of total harmonic distortion. So besides running an air conditioner, ceiling fan, and refrigerator, you can also rely on the unit for charging sensitive electronics and appliances like mood lights, mobile phones, laptops, tablets, etc.

Another impressive feature of the Generac whole house standby generator is its pressure-lubricated engine. So in short, you’ll not have to deal with frequent maintenance of the generator. The engine will handle rigorous use and requires less routine maintenance than gasoline home generators.

Standby generators are mostly installed out of the home so the exterior material needs to be tough to withstand all weather. So the Generac residential standby generator features a Rhinocoat powder-coated finish that prevents corrosion on aluminum walls.

Our Verdict


  • Robust, durable all-weather aluminum enclosure with 3 removable sides
  • The multilingual LCD lets you monitor battery status and track maintenance intervals to ensure smooth functioning of the engine
  • Best automatic standby generator for whole house
  • Generac’s mobile linkā„¢ remote monitoring allows you to monitor the status of the unit from your smartphone, tablet, or computer
  • Works with liquid propane or natural gas
  • UL safety listed, CSA safety listed, and ETL safety listed
  • Safety features include automatic voltage regulation, low oil shutdown, and overload protection


  • Standby generators are not portable
  • High installation cost

Key Features:

  • 530 cc engine displacement
  • 200 Amp transfer switch
  • Automatic transfer switch
  • 64 dB normal operating load noise
  • 5-year warranty
  • Weighs 446 lbs

9) Pulsar 12,000W Dual Fuel Portable Generator with Switch & Go Technology, CARB Approved

Pulsar 12,000W Dual Fuel Portable Generator with Electric Start and Switch & Go Technology

Running out of fuel when you need power the most is the worst nightmare. And things can get more frustrating when the unit supports the use of a single type of fuel only. And if you’re planning to use the heavy-watt 12000-watt generator for both home and camping then go for Pulsar dual fuel portable generator with an electric start.

In addition to the flexibility of dual-fuel, Pulsar PG12000B is equipped with switch and go technology. This technology provides a seamless transition between gasoline and propane without work shutdown. In short, you’ll not have to rush to the nearest gas station with Pulsar PG12000B.

Easy electric push start helps to start the engine conveniently without having to pull cords multiple times. However, if the battery doesn’t operate well in cold weather or dies, then no need to worry as there’s always an option for a recoil start.

The control panel comprises of 4x 120V outlets, 1x 120/240V twist-lock outlet, 1x 120/240V 50 Amp RV outlet, and 1x 12V DC output. Use the 50A RV outlet to run various appliances inside your RV smoothly.

Our Verdict


  • Good dual fuel generator for both home and outdoor use
  • Convenient Switch and Go technology allows a seamless transition between fuel sources without any fluctuations
  • Large 10-inch never-flat wheels for a smooth and safe transportation
  • Sturdy, high-glass tubular steel frame with drop-down handles
  • Includes propane hose, battery, engine lubricant, oil funnel, spark plug wrench, and wheel kit
  • CARB compliant
  • The air-cooled OHV engine is rated 9500W rated for gasoline and 8550W rated for LPG


  • Filling oil in the tank can be a bit tricky for first time users
  • You might have to recoil start the engine on chilly days

Key Features:

  • 457 cc engine
  • 14.1 HP
  • 8-gallon fuel tank capacity
  • 76 dB operation volume
  • 3-in-1 digital meter
  • 2-year manufacturer’s warranty
  • Weighs 205 lbs

How Long Will A 12,000 Watt Generator Run?

The run time of any generator varies depending upon the size of the fuel tank and power drain. Typically a 12,000-watt generator will run for an entire night if your fuel tank is sufficiently big and you are running limited appliances in your home.

If you will follow the company guidelines @50% load a 12000-watt generator will be able to run for 9-12 hours.

What Will a 12000-Watt Portable Generator Run?

A 12000-watt generator undoubtedly delivers enormous power. And the power is enough to run the whole house for hours. Such high-watt generators usually have multiple output ports to connect multiple appliances at once(1). And some of them feature a 50A DC port that connects directly to the RV outlet to get the appliances inside the trailer running. Below listening will give a brief idea of what appliances a 12000-watt generator can run.

  • Ceiling fans
  • microwave
  • Computers
  • Halogen lights
  • Space heaters
  • Toaster oven
  • Sump pump
  • Power tools
  • Refrigerator
  • TV, etc.

How to select a 12000-watt whole house generator?

A good value 12kW generator is costly. And you must check a few things before buying a new generator for your home as it should meet the best of your expectations. It is okay not to have an in-depth idea about these huge machines, but a little knowledge is never harmful. So we’ve listed down a few important features/functions to look at before buying a brand new unit.

Starting Vs Running Watts

Starting watts of a generator indicates the peak power it delivers at starting to run heavy appliances like refrigerator, microwave, etc. This peak power or surge power creates the momentum required to start and run the heavy appliance.

On the other hand, running watts are the wattage required to keep the appliances running. While peak power or starting wattage is temporary, running wattage is the actual watts the generator offers.

Fuel Options

Heavy-duty home generators often provide the flexibility of fuel. They are commonly known as dual fuel generators and allow the use of either gasoline or propane. If possible, always use propane fuel as it provides longer runtime, plus, it is more environmentally friendly than using unleaded gasoline.

Fuel Capacity and Run Time

The fuel capacity of a unit indicates how much gasoline can it hold. A unit with a large tank will provide more runtime than a gasoline generator with a small fuel tank. But this might not be the case with dual fuel generators as they offer the choice to run the engine on a propane tank. Not only propane is safer for the environment but it also provides long runtime than gasoline without emitting toxic fumes.

Start Mechanism

Generally, all the heavy-duty 12000-watt generators will have a recoil start. Here, you need to pull the cord to start the engine. But thankfully, a few of them also feature key electric or push-button electric start that lets you start the engine effortlessly.

Besides recoil and electric start, many high-end models offer electric start with a key fob for distance ignition. The key fob helps to start the engine from a distance that is good when you’re living off-grid or camping in the woods.

Noise Levels

A powerful home generator with 12000-watt of peak or running wattage will obviously produce noise when on. But that does not mean you’ll have to bear irritating loud noises of the machine in case of a power outage or while using it outdoors. Many reliable units run on minimal noise levels while powering multiple appliances of your home. The noise levels of a 12000-watt generator range between 70dB – 82 dB from a distance of 23 feet.

Power Outlets

A 12kW generator comprises multiple power outlets to support the running of multiple heavy-duty appliances at once. Apart from regular household AC ports, many portable generators are equipped with a 50A DC outlet that lets you power RV directly. And many of them feature USB ports to charge sensitive devices like smartphones, laptops, radio, etc, in time of an emergency.

Other Than Home Use

Undoubtedly, a 12000-watt generator is enough to run the whole house. But apart from home, you can use a dual fuel generator to power the entire RV, food truck, or travel trailer. In addition to RV, you can carry the heavy-duty generator to your off-grid home or campsite to get the power when needed the most.

Warranty and Budget

It is obvious to expect a warranty especially when you’re investing such a huge amount of machinery. And thankfully, many brands provide an impressive warranty on their heavy-duty generators. Usually, the warranty covers the manufacturer’s defect, minor faults, etc but a few of them also offer complete replacement of the unit within a few months.

How Much Does A 12,000 Watt Generator Cost?

Power generators tend to come with heavy costs due to complex mechanics and power-sensitive parts used in them. For a portable 12000 watt generator, you can expect to pay around $700-$1500. The price will vary from brand to brand and modern features.

However, if you are looking to buy a hard installed 12000 watt home standby generator then your bill can go from 3000-10,000 dollars.


Power your whole house, RV, or food trailer by using a reliable 12000-watt generator. These heavy-duty yet portable units are great to use for homes or offices that experience frequent power outages. The best thing about a 12kW generator is, it can run your whole home or office for hours. In short, you’ll not have to worry about power as long as you have the best 12000-watt generator.


Please enter your comment!
Please enter your name here