Best 15000 Watt Generator Reviews

Updated September 2, 2020

Getting stuck without power when you need it the most is an incredibly frustrating feeling. Investing in a generator for your home or RV is a great way to make sure that you can keep your lights on, no matter what the weather brings your way.

Generators are a particularly good investment for any frequent camper, as they enable you to stay connected no matter how far away you are from an outlet. However, they’re also a great investment for your home – you never know when a storm or hot temperatures might leave you without power.

Choosing a portable generator can be challenging, as there are so many different options to choose from. A 15,000 watt generator is a great choice, because it can handle a significant load of electronic devices, including air conditions, refrigerators, and other large home appliances.

We’ve rounded up some of the top 15,000 watt generators on the market to help you choose the best one for your needs.

Best 15000 Watt Generators

#PREVIEWProduct
1 DuroMax - XP15000E Portable Generator
Best Overall
DuroMax XP15000E Generator
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2 Generac - 5734 GP15000E Gas Portable Generator Generac 5734 GP15000E Generator
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3
Best For Low Budgets
3Westinghouse WPro12000 Generator
Westinghouse - WPro12000 Ultra Duty Industrial Portable Generator
Best For Low Budgets
Westinghouse WPro12000 Generator
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4
Best For Higher Budgets
4CAT RP12000E Generator
CAT - RP12000E Gas Powered Portable Generator
Best For Higher Budgets
CAT RP12000E Generator
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5 NorthStar - Portable Generator 15,000 Surge Watts NorthStar 15kW Generator
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1. DuroMax XP15000E Generator

Highlights
  • This generator has a power level of 15,000 peak watts and 12,000 running watts.
  • The fuel tank’s maximum load is 10.5 gallons, and it has the ability to run propane or gas. 
  • It has seven different outlets with 120 and 240 volt capacity. 
  • The generator comes with a wheel kit.
Best Overall
DuroMax - XP15000E Portable Generator

This generator from DuroMax is an excellent option for powering larger home appliances and electronics.

With 15,000 peak watts and 12,000 running watts, it has enough power for all your needs. This generator has a dual fuel tank, so it can use both propane and gas, although the gasoline tends to run more effectively than the propane. This generator has seven outlets – four household outlets, one heavy-duty 240V outlet, and two twist-lock outlets (one 120V and one 240V).

Despite its affordable price, this generator is well-made, with an all-metal exterior, copper windings, and a V-twin engine. It comes with a wheel kit and a hoist bar, which makes the generator easier to move around.

For safety, this generator has a low oil shutoff as well as surge protection, which keep you and your devices safe from damage.

Specifications

Size:
35 x 33 x 30 inches
Voltage:
120/240 V
Wattage:
15,000 peak, 12,000 running
Power Source:
Gas/Propane

Pros

  • The generator has an excellent selection of outlets, with both traditional household outlets and twist lock outlets.
  • It is an excellent quality generator, with a twin engine and an entirely metal construction.
  • The included fuel kit makes it easy to move the generator around.
  • This generator has a number of safety features, including a low oil shutoff and surge arrest technology.

Cons

  • The wheels on this generator don’t roll well and can be flat.

2. Generac 5734 GP15000E Generator

Highlights
  • This generator has 22500 starting watts and 15000 running watts.
  • A 16 gallon fuel tank provides run times as high as 10 hours. 
  • It has an electric, battery-powered start with a plug in battery charger. 
  • The generator has a voltage of 120/240, with nine different outlet options.

This powerful generator from Generac is a great option for anyone who needs to power large devices – it’s often used on construction sites.

It uses a battery powered electric start to achieve its initial starting wattage of 22500, and maintains a running wattage of 15000. It runs on gas and has a 16 gallon resin tank, which results in a total of 10 hours of runtime when running at 50 percent capacity.

The generator’s engine is incredibly durable.

It has an OHVI design with full pressure lubrication, a spin on oil filter, and a dual element air filter to keep the engine clean and prevent ongoing damage. Although this generator is very powerful, it has a compact metal frame that is made with hardened steel and durable wheels, which makes it easier to move around.

It has nine different types of outlets, all of which are circuit breaker protected. Low oil shutdown and idle control make the generator more efficient and reduce noise.

Specifications

Size:
48.5 x 31 x 39.5 inches
Voltage:
120/240 V
Wattage:
22500 starting, 15000 running
Power Source:
Gas

Pros

  • This generator is very powerful, with 15000 running watts to power large appliances.
  • The engine has a full pressure lubrication system, which prevents it from stalling and increases its shelf life.
  • Idel control and a low oil shutdown conserve fuel and protect the engine.
  • It has a wide range of outlet types to support many different types of devices.

Cons

  • Setting up this generator can be complicated.

3. Westinghouse WPro12000 Generator

Highlights
  • This generator has 12000 running watts and 15000 peak watts.
  • It has an electric start with the option to start remotely using a key fob. 
  • It has a 10.5 gallon fuel tank with visible fuel gauge. 
  • The generator has a full panel with five outlets and two USB ports.
Best For Low Budgets
Westinghouse - WPro12000 Ultra Duty Industrial Portable Generator

This reliable generator from Westinghouse works well for powering your appliances and electronic devices, both at home and on the road.

It has a 713cc OHV V-Twin Westinghouse engine that is protected with a durable cast iron sleeve. The engine has a low oil shutdown and smart idle feature to use power more efficiently.

This generator has both 120 and 240V outlets, including options for transfer switches. It also has two USB ports, and runs with less than 5 percent harmonic distortion, so it’s safe to use on sensitive devices. Each outlet has a cover and the generator uses circuit breakers to protect you from electric shock.

The device uses an electric start button on the generator as well as a remote start button. Wheels and a lifting hook make it easier to move the generator from place to place.

Specifications

Size:
27.2 x 26.1 x 26 inches
Voltage:
120/240 V
Wattage:
15000 starting, 12000 running
Power Source:
Gas

Pros

  • The remote start button makes the start-up process much easier.
  • This generator has an excellent run time for its size, it can last up to 11 hours and has a fuel gauge for easy monitoring.
  • The USB ports make it easier to charge devices like smartphones and computers.
  • The engine is designed for durability and has a low oil shutdown feature.

Cons

  • This generator may be slightly louder than generators of a similar size.

4. CAT RP12000E Generator

Highlights
  • This generator has 15000 starting watts and 12000 running watts
  • It has a 13.2 gallon tank made from treated steel. 
  • It has 9 outlets with 20, 30, and 50 amp connectivity. 
  • The 670cc engine uses a pressurized oil system.
Best For Higher Budgets
CAT - RP12000E Gas Powered Portable Generator

This is a well-designed generator from the CAT brand, which is known for their heavy-duty machinery.

It has a compact but durable design with a pressurized oil system and low oil shutdown to protect the engine. The 13.2 gallon gas tank provides an excellent 11.7 hours of runtime, and it’s safe to use with sensitive electronics like phones and computers.

The control panel on the device is very simple and easy to use, with an LED operated display. Nine outlets offer everything you need to power your electronics, including heavy-duty options for RVs.

Specifications

Size:
34.1 x 26 x 34.4 inches
Voltage:
120/240 V
Wattage:
15000 starting, 12000 running
Power Source:
Gas

Pros

  • It’s great for powering sensitive electronics, as it has less than 5 percent harmonic distortion.
  • This generator has an excellent run time of 11.7 hours while using a 50 percent load.
  • It has a relatively compact design with wheels and a lifting hook for easy maneuverability.
  • It uses safety features like a spark arrestor and low oil shutdown to protect the user.

Cons

  • Although this generator is compact, it is relatively heavy.

5. NorthStar 15kW Generator

Highlights
  • This generator has 15000 starting watts and 13500 rated watts. 
  • It has 10 outlets as well as a 12V DC outlet, so you can charge all your devices at once. 
  • It has a CARB compliant Honda engine that uses an electric start. 
  • It has an 11 gallon fuel tank designed for a long runtime.

This generator from NorthStar is a well-built option to power your electronics at home or on the road.

It uses a copper wound generator head, which helps to prevent the engine from overheating. It’s safe for use with sensitive electronics, and has a full panel of more than 10 outlets so you can charge everything at once.

The panel has a voltmeter and hour meter, so you can check on your generator’s performance. The exterior has a durable steel roll cage, and it has vibration isolation mounts to keep the generator stable.

Specifications

Size:
33 x 25 x 27 inches
Voltage:
120 V
Wattage:
15000 starting, 13500 running
Power Source:
Gas

Pros

  • This generator has an electric start with a variable timing digital CDI ignition, which helps maintain your power output right from the start.
  • This generator is designed for durability, with a steel roll cage, sturdy base, and 100 percent copper wound generator head.
  • The engine is quiet and CARB-compliant, so it meets emissions standards.
  • It is safe for use with sensitive electronics.

Cons

  • Although the NorthStar brand makes wheel kits, you’ll need to purchase them separately.

15000 Watt Generator Buying Guide

A generator is a worthwhile investment for your home, and you’ll want to make sure you’re getting good value for your money. With so many options for 15,000 watt generators, it’s difficult to know what to look for. Here’s what to consider while you’re shopping to find the right generator for your needs. 

Inverter vs Standard

One of the most important factors to consider when choosing a generator is whether you want a 15000 watt inverter or a standard generator. Inverter generators are typically more expensive than standard generators, so if you’re on a budget, they may not be the right choice for you. 

However, if you’re willing to invest more to get a higher quality product, then you may want to consider purchasing an inverter generator. 

Inverter generators use electricity much more efficiently than standard generators. Because of this, they don’t use as much fuel and are able to run for a much longer period of time before needing to refuel. 

Inverter generators also make far less noise than their standard counterparts. If you use certain sensitive electronics, an inverter generator may also be a better choice for you. 

This is because they produce clean electricity, which is much safer for devices like computers and smartphones. The one downside of an inverter generator is that they don’t typically produce as much power as a standard generator. 

If you’re looking purely at raw power levels, a standard generator may be a better option. 

Fuel Type

Generators can use a few different types of fuel. There are advantages and disadvantages to each fuel type, depending on your needs. 

Propane

15000 watt propane generators are more common than diesel generators, and they offer some unique benefits that diesel doesn’t offer. 

Propane generators are typically easier to start and they also are less prone to ongoing wear and tear. Propane is also easier to find in stores, which is a very important consideration if you’re going to be taking your generator with you on a camping trip. 

Finally, propane generators are typically less noisy and intrusive than diesel generators, and they’re also slightly cleaner to burn. 

Diesel

A 15000 watt generator with diesel power is your alternative to a propane generator. The biggest benefit of using a diesel generator is that diesel is much more affordable than propane, so it could be the right option for you if you’re on a budget. 

Diesel fuel also tends to have a much longer burn time, so you can keep your generator running without needing to refuel. This also improves the fuel economy of the generator. 

Dual Fuel

Dual fuel generators are generators that can run using either propane or diesel fuel. A 15000 watt dual fuel generator is very convenient for those who want the option of running either power source. 

Size

The size of your generator is another important consideration. You’ll need to make sure the generator is appropriately sized for your use. 

For example, if you’re planning on using your generator at home during power outages, you’ll need to make sure it fits into your storage space, and that you have enough space to run it outside. 

If you’re planning on using your generator for camping trips, you’ll also need to make sure it fits comfortably in your car. 

Portability

Portability is key for any generator, particularly if you’re going to be traveling with it. A 15k watt portable generator is a great investment that you can use to power your RV and your electronic devices while you’re out in nature. 

When considering the portability of the generator, you’ll want to think about its weight and how easy it is to lift. Many generators also come with wheel kits, which make them much easier to move around. 

If you’re purchasing a generator with a wheel kit, you’ll also want to consider the durability of the wheels and how easy they are to install. 

Noise Level

Generators can be incredibly noisy and intrusive. A 15000 watt quiet generator will still make some noise, but should be quiet enough to allow you to have conversations. 

To determine the noise level of a generator, look at the decibel level. For reference, a normal conversation is about 60 dB – you’ll want to look for a generator that makes slightly less noise than that. 

Pricing Range

A generator is an investment in your future – you’re ensuring that you’ll still be able to use your electronic devices and appliances, even if you lose power. 

Since 15000 watt generators are relatively large and powerful, they aren’t going to be the cheapest on the market. 

While prices vary widely, you can expect to pay several thousand dollars for a reliable 15000 watt generator. When making your purchase, you’ll also want to consider the cost of fuel, oil, and anything else you might need to keep your generator in good working order.

Our Verdict

If you need to power a whole household worth of appliances, a 15000 watt generator is a worthwhile investment. Whether you’re taking the generator on the road or just using it as a backup, you’ll need to make sure that you can really trust it to keep you powered.

We’ve reviewed some of the best generators currently on the market – use this guide to find one that’s a perfect fit for you.