The 5 Best 15000 Watt Generator Reviews

No doubt it is the most frustrating feeling if you get stuck in a family gathering or some business meeting without power when you need it most. To make sure that lights are on regardless of the weather, generators are the best option for handling this awkward situation.

Generators are a worthy investment for any camper, business, or homeowner. Because nobody knows when a storm or hot temperatures may strike, leaving you helpless.

In this article, I have mentioned some of the top-rated 15kW portable generators on the base of my and some of my neighbor’s personal experiences. We both had almost spent two months gathering this latest informative data related to these 5 best 15000-watt generators so that you can select the most suitable according to your needs. Let’s have a look at these amazingly reviewed 15kW Home Generators.

What will a 15000-watt generator run?

15kW generators can power many different devices at the same time, depending on the power selection of your generator. Connect large refrigerators, air conditioners, ovens, and other large appliances to generators of this size.

A 15kW generator can run:

  • Entire house
  • Jobsite
  • RV
  • commercial usage
  • Laptop, mobile, and tv.
  • Other vulnerable devices

Best 15000-Watt Generator

Below I have covered the best 15000-watt dual-fuel portable generators with Features, specs, pros, and cons that will help you to make a wise decision to select the best option for you.

1. Böhmer-AG 9000W-E Petrol Generator – Most Portable

Böhmer-AG 9000W-E Petrol Generator – Most Portable

BöhmerAG is known for producing high-quality, energy-efficient generators and their 9000W gasoline generator is no exception. It is one of their most energy-efficient generators that also have advanced safety features to ensure trouble-free operation at all times.

When I bought this generator I was very excited to unpack this. I assembled the generator out of the box in one go by following all the necessary instructions mentioned on the box easily.

When I started it the very first time I feel its handle and the battery is shaking so I used some support to control its rattling.

When I filled it with petrol I see it has intelligent power management technology that automatically adapts the motor to your needs. So if you only use the generator to run a small kettle, it adapts the engine speed to the power consumption so that no fuel is wasted unnecessarily and runs smoothly.

lastly, feel it little noisy So, I made a box and put it in the garage 45 meters away from my house. Now I can sleep peacefully while it’s running.


Brand Bohmer
Colour Red
Weight 87kg
Height 55cm
Length 55cm

Efficient Generator

When it comes to efficiency, Bohmer-AG is globally recognized as the most efficient generator manufacturer.

A Force for Nature

The 9kW generator features intelligent power management, producing when you need it by automatically adjusting engine revolutions based on the current draw.

Durable Frame

It includes a durable frame that protects and houses a powerful 458cc 16HP Air Cooled OHV Böhmer-AG engine.

  • It has clever and portable design.
  • It has a run time of up to 11 hours, which is more than a typical workday.
  • It saves fuel usage with idle control.
  • It includes high starting watts which enable powering your whole house.
  • Little noisy (might need expert help to install).


2. DuroMax XP15000EH – Easiest To Start

DuroMax XP15000EH – Easiest To Start

The DuroMax brand specializes in a few products, all of which are powered by a gas engine, although today they have become one of the leaders in hybrid technology (dual fuel) and the DuroMax XP15000EH is a great example of this.

I bought this generator after hearing a lot about this model so, I decided to test it by myself. Actually, I want to run my house appliance when power outage in hurricane weather. I want to use this with a propane tank it took me little effort but after that, it ran very smoothly. I really loved its duel fuel technology and felt safe that I didn’t waste my money.

The DuroMax XP15000EH was very easy to assemble for me because I follow all the instructions mentioned on the box. I feel it little noisy but not that much that I couldn’t bear.

Also, I am very satisfied with its electric start it makes my life easier. Now I and my family is very happy after having this dual fuel portable generator in our home. It’s a great addition for us.


Brand DuroMax
Colour Blue and Black
Weight 380 pounds
Item Dimensions 33 x 30 x 35 inches
Wattage 15000 W

VTwin Engine

It uses a 713cc, 23HP V-Twin Duromax engine.

7 Outlets

You got 7 outlets for powering up a handful of appliances.


You can even connect some central AC models and also an RV with 50 amps. That’s pretty useful.

Electric and Recoil Start

The unit has the option for both electric and recoil start.

  • It runs on both gas and propane.
  • It has built-in a digital voltmeter to track output and maintenance hours.
  • It can power up certain central ACs and 50 amp RVs.
  • It comes with a propane hose.
  • Tires may go flat as they are not pneumatic.


3. Champion Portable Generator – Budget Friendly

Champion Portable Generator – Budget Friendly

Champion generators are always equipped with intuitive functions. These units can last 9 hours with a full tank. In addition, its fully electric start saves you many worries.

The Vtwin 717cc engine of this generator is powerful, reliable, and able to handle a large central AC current. It has 8 pockets in total including 4 domestic.

This means that you can power multiple devices at the same time. The best thing to be that all stores are covered, reducing the possibility of dirt and debris from entering.

One of my friends bought this generator for his food truck and he gave me a tremendous review. This generator is easy to move around and has electric start technology.

He told me he ran this Champion Portable Generator on a propane tank of 10 gallons continuously for 11 hours smoothly and efficiently. He found one little issue the oil filler hole is so small that takes extra time for filling. It’s also a little noisy but he is still satisfied with his affordable purchase.


Brand Champion
Colour Yellow and Black
Weight 330 pounds
Item Dimensions 33.9 x 31.1 x 33.1 inches
Wattage 12000 W

V – Twin Engine

This Champion generator includes a 717cc V-Twin Champion engine which contains an electric start and Champion intelligence system.

Starting Watts and Running Watts

With this generator, you can expect up to 15,000 starting watts and 12,000 running watts.

Fuel Tank Capacity

This generator includes a 10.9-gallon fuel tank capacity that will provide you with 9 hours of run time at 50% load.

  • This generator is the built in Intelligauge.
  • Comparing noise levels to the Duromax, the Champion 100111 is going to be slightly louder at 78 dba at 23 feet.
  • Featuring collapsible handles and plastic wheels and tires, this generator can be moved across most terrains very easily.
  • Smooth start in any weather.
  • The pull start option isn’t available.


4. Westinghouse Portable Generator – Powerful Generator

Westinghouse Portable Generator – Powerful Generator

The Westinghouse has all the qualities to make it the best generator for any home. It includes a large gas tank that can supply your home for 16 continuous hours.

It includes a 713cc OHV VTwin engine that has a cast iron sleeve that makes it super strong and durable.

Not only this, there are 5 outlets with a 120V outlet that can be connected to a transfer switch. These outlets are covered with rubber for added security.


Brand Westinghouse
Colour Black
Weight 192 pounds
Item Dimensions 27.2 x 26.1 x 26 inches
Wattage 15000 W

Remote Start Function

This generator features a remote start function that can save you time and effort from running outside when the power is down.

Electric and Recoil Start

It also has an option for an electric and a recoil start that will help you when everything fails you.

Oil Level Shutdown

It also includes an oil level shutdown feature to protect the engine.

  • It is perfect as a dependable source of portable power.
  • It includes a smart Idle that automatically lowers idle speed with no load.
  • It is safe and convenient with automatic low oil shutdown.
  • All Westinghouse portable generators contain minimum residual oil and fuel odor.
  • It is a little bit noisy.
  • The price of replacement parts is high.


5. Generac GP15000E Generator – User-Friendly Generator

Generac GP15000E Generator – User-Friendly Generator

The Generac 5734 is the best 15,000-watt generator and its capabilities are unmatched when compared to any other portable generator in this power range.

The starting watt is much higher than the other models we tested. This is a great way to power a large home, office, or high-powered device.

The 9 sockets enable the connection of a wide variety of household appliances. Since the outputs are protected with circuit breakers, the power supply is smooth. This generator run 10-hour  on a 16-gallon fuel tank smoothly.


Brand Generac
Colour Yellow and Black
Weight 330 pounds
Item Dimensions 33.9 x 31.1 x 33.1 inches
Wattage 12000 W

Full Pressure Lubrication

Generac has a 992cc OHVI engine equipped with full pressure lubrication and an automotive-style spin-on oil filter that makes the unit durable.

Additional Features

The generator has additional features like an hour meter, idle control, and a low oil level shutdown.

Easy To Operate

The electric start function makes it extremely easy to operate.

  • High starting watts enable powering large facilities.
  • Full pressure lubrication adds durability to the engine.
  • It has a wide arrangement of outlets with a circuit-breaker.
  • It includes a reliable and well-protected engine.
  • Wheels not included with the unit.


What to look for in 15000-Watt Generators – Buying Guide

There are so many 15000-watt generators available on the market. So to choose the best one for you, consider the following points while shopping.


Portable generators often use gas and propane. Gas will be cheaper in the long run, but when you are in an area that is frequently hit by natural disasters, gas can be difficult to find. But in addition to this drop, gas is also simple. A solar power generator is suitable for smaller applications.

There are also hybrid generators that use both gas and propane if you need alternative sources of fuel when needed. So when buying your generator, make sure it runs on gas or propane.

Fuel Economy

You should see how many hours the fuel tank can supply the generator before starting it. Most gas generators are 25% or 50% loaded. To give you an example, if a gas generator can run 20 hours at half load, it can run 10 hours at full load. You should take this into account when choosing your generator.

Design Quality

The quality of the generator is important because you need to make sure that it is durable and reliable. The design should also be good, especially if you take it with you to a sturdy workspace. In your workplace, you probably want to look for one with wheels and outlet covers so nothing is screwed up.

If all you’re looking for is a backup power supply for your home then having all the conveniences probably doesn’t matter as you will only be using them for power.

What to look for in 15000-Watt Generators


Gas generators tend to be noisy. If you live in the middle of nowhere, that’s probably not a big deal, but if you live in a residential area, noise can be an issue. Since the generators we are talking about today are 15,000. Due to the high output, watts are one of the loudest by default.

You can use a generator cover or exhaust to make the generator quieter, but you need to consider where you are going to live or use the generator as it will be noisy.


If you are investing more than $ 2000 in a generator, you definitely want to make sure it has a good warranty. You should also make sure that you are getting good customer service in case you need to troubleshoot your generator.

While most generators require minimal maintenance, you still want a guarantee in case something really goes wrong.

The good news is that most generator warranties are around 13 years and depending on whether you use it at home or at work, you will likely see a different warranty for it.

Best 15000 Watt Generator – FAQs

Will a 20kw generator run my house?
A 20 kW generator will power most of the house’s electrical outlets, lights, and central air conditioning, up to 5 tons. You have a second air conditioner and heater upstairs, but this area of the house is not important to you as long as you are using generator power.
How many amps is a 10 000 watt generator?
A 6500-watt generator can only produce about 27 amps; a 10,000-watt generator can produce about 42 amps, and it doesn’t matter if it’s a portable or an automatic. There is a simple formula that can be used; watts divided by volts are equal to amps. The generator produces 240 volts. 6500 divided by 240 is 27.
How big is a 15000 watt Duromax generator?
The LxWxH of Duromax generator is 33 x 30 x 35 inches.
What size generators does Honda make?
Honda produces approximately 46 thousand compact gasoline generators whose capacity ranges from 0.9 –12 kVA in Japan, China, France, India, Thailand, and the US.
How big of a generator do I need to run my house?
With a 5,000 to 7,500 watt generator, you can run even the most critical household equipment, including refrigerators, freezers, well pumps, and lighting circuits. A 7,500-watt generator running can run all of these devices at the same time. For RV, a 3000 – 4000 watt generator will work fine.


To Sum Up

A 15,000-watt generator is a worthwhile investment. Before selecting the best generator, you need to make sure that you can really trust it to provide you with power.

I’ve reviewed some of the best generators on the market right now. In my opinion, the best among all is Duromax XP 15000 due to the following reasons:

  • It can run for 8 hours at 80 % capacity if gas-powered while it can run up to 9 hours at 50 % capacity on propane.
  • This generator can operate between 3000 – 5000 running wattage range.
  • This is one of the best hybrid generators available in the market.

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