10 Best 15000 Watt Generators (Reviews) Updated in 2021

When you find yourself in the darkness after a power outage or when you need power in your job site, this is the time you start thinking of buying a powerful generator. Best 15000 watt generators have been used in lots of homes and job sites to provide reliable, portable power.

I would say you have realized the potential a 15000-watt generator can give you and that is why you’re here. As an expert and experienced buyer in this area, I won’t disappoint you.

Today, I give you the top best 15000-watt generators available in the market. I have prepared a review on each product highlighting its features and cons to make it easier for you to choose.

And since my aim is to make the process as simple as possible and also help you select the best 15000-watt generator to invest in, I have given you a buying guide that will direct you to your match.

Top 10 Best 15000 Watt Generators in 2021

1. Generac GP15000E – 15000 Running Watts &22500 Starting

My first best 15000-watt generator is the Generac 5734 Gas Powered Generator. It’s a powerful portable generator that I believe will be an excellent option for use as a power backup during an emergency.

Its powerful OHVI engine delivers power and performance while its sturdy steel-tube cradle protects its exterior. I was impressed to see that its outlets are fitted with a circuit breaker which prevents overload.

With 15,000 output watts power supply, the generator is ideal for use in job sites with high power requirements. For safe and comfortable use, this generator uses a reliable battery powered electric start and to ensure that the generator operates quietly, it’s fitted with a low tone muffler which I could say works real magic.

2. DuroMax XP15000EH – Portable Generator

DuroMax XP15000EH takes the next position in this review. But why? One thing I loved about it is the fact that it’s EPA and CARB approved meaning it can be used in all the 50 states and many other countries around the world.

It’s a unit that brings ultimate portable power wherever you need it. It’s powerful enough to keep the lights on and your whole house powered during a power outage.

You will love to hear that it’s powered by a powerful 23-horsepower, 713cc V-Twin engine which feeds its fully loaded panel allowing you to pull power to a maximum of 15000 watts.

I was also impressed by the over-sized noise reduction muffler which comes with a built-in spark arrestor ensuring you get safe to use in the mandated areas and the job site.

3. NorthStar 15000W – 15,000 Watts Surge 

My next best 15000-watt generator is a powerful model from NorthStar. The NorthStar 15000W Generator is a unit that you want in your job site or as a power back source.

It provides smooth, steady clean energy with low harmonic distortion allowing you to connect your sensitive electronics without worries safely.

For them (NorthStar) to ensure that you get the best and reliable performance, they use robust commercial grade Honda engine which is an amazingly safe and smooth running. The engine allows this generator to provide everything you need in emergencies and on the job sites.

It’s easy to start and has improved power, longer run times, quieter operation and great at fuel efficiency. So, it’s a unit that needs to be on this list.

4. DuroMax XP15000E – 12000 running Portable Generator

While doing my search I came across this DuroMax XP15000E which is quite similar to the one above. It is featured in this best 15000 watt generator review since it has some quality features that shows its ability to perform well.

My DuroMax XP15000E here boasts the newest engine design; the powerful 23 HP 713cc V-Twin engine. The powerfulness of this engine allows it to be an ideal generator for homeowners searching for a reliable power source during power outages while also keeping the comfort flowing.

And to make sure the unit operates silently, it’s fitted with an over-sized noise reduction muffler with a built-in spark arrestor. Away from performance, the generator comes with rugged, heavy-duty wheels and two, easy to grip padded handles which make super easy to transport it wherever you need the power.

5. Westinghouse WPro12000 Industrial Portable Generator

My 5th best 15000-watt generator for you is the high-power, industrial-grade Westinghouse WPro12000. It comes as an ultra-duty industrial portable generator built to handle the most robust power needs. It is run by a highly-reliable heavy-duty V-Twin OHV Westinghouse engine designed to deliver dependable and long-lasting 12000 running watts and 15000 peak watts. With this amount of power, its applications are unlimited. And you know what, at half load and with the 10.5-gallon fuel tank full, this massive generator can give you up to 16-hours of runtime; it’s intriguing.

Another thing, the generator is designed to produce clean power with less than 5-percent Total Harmonic Distortion, which is ideal for powering sensitive electronics. You might be thinking it’s difficult to start this powerful beast. But the utilization of a convenient electric start with battery included and a wireless start key fob has made it super easy to start the generator even for a distance away. Portability is also something adorable. The generator has no-flat wheels and a pulling handle, plus a lifting hook for easy transportation.

6. Kohler Generators 14RESAL-200SELS Standby Generator

Next, I give you a Kohler Standby generator ideal for a variety of applications. The 14RESAL-200SELS Standby Generator is to make sure you have enough power to keep your family comfortable, groceries cold, your basement dry, and more. When there is a blackout or a power outage, this standby generator will be ready to keep you connected to what you love to do. And you know what, it’s designed to be wired into a home or electrical business panel using a transfer switch. The connectivity works with an automated system to ensure it starts up automatically when the power goes off.

Premium Power Quality is what you get here. With a sensitive voltage regulation and lower than 5-percent harmonic distortion, the generator can give you 14kW of clean power for running and charging your most sophisticated electronics. Apart from being back with an extended warranty, this model also has a corrosion-proof enclose design to last for years. Additionally, it uses a heavy-duty engine designed to exceed the massive power demands. The customers also praised the fast response that allows this generator to start multiple appliances at the same time in less than 10 seconds.

7. CAT RP12000E portable Generator

Caterpillar is a reputable and reliable company that builds machines made work and to last. With this next 15000-watt, the Cat RP12000E, every aspect is carefully thought out with the customer in mind, from performance and ease of use to safety and durability. The model is here to give you portable and highly reliable 12000 running watts and 15000 Watts of power. The fact that it has a heavy-duty construction ensures that it is ready for the big jobs. And now, with this powerful generator, you’re able to power your home, work, and play with high-quality power.

As a heavy-equipment, Cat RP12000E is capable of delivering long-lasting power needed for heavy-duty applications and in a balanced, fuss-free design. Another thing, this model comes with premium features. It does feature a rugged steel frame that offers the much-needed support and protection to its interiors. The padded handle and the all-terrain flat-free wheels offer ideal portability and mobility. Last but not least, you can now rest assured with this generator in your home, you all covered when there is a power outage.

8. Champion 100111 Portable Generator

Champion Power Equipment has won many customers’ hearts for producing high-class generators and other power machines. And now you have the chance to enjoy high-performance and reliability offered by their generators by getting this Champion 100111. It’s a portable generator designed with customers’ safety and convenience in mind. Getting this rugged, heavy-duty generator means next time you experience a power outage, you will have a reliable backup power unit.

The model is run by a massive V-Twin OHV Champion engine designed to comprehensively handle multiple power tools and the large equipment you might need to get your job done. And you know what, despite its vast size, this generator is amazingly portable thanks to the combination of foldaway handle, never-flat tires, and the lifting hook. The starting system is also something adorable; the generator has a handy electric start that comes with a battery included and Cold Start Technology for easy starting in cold weather.

9. Generac 70361 Air-Cooled Standby Generator w/Wi-Fi

Here is another home standby generator for those who need heavy-duty, automatic power backup systems. The Generac 70361 is a Guardian Series generator here to provide you with mechanical backup power required to protect your home and family when a blackout or power outage occurs. The convenience of using this generator is, it uses your existing LP or natural gas for its fuel supply. It does also kicks pretty fast and automatically when it senses power loss.

With this unit, you can count yourself covered during a power loss. Its industry-leading power supply reliability can run multiple appliances in your home. As one of the largest air-cooled generators in the market, it’s sturdy enough for whole-house coverage. The coolest thing is, the generator has Wi-Fi, which provides a Free Mobile Link to allow you to monitor its status on your portable device. Additionally, the G-force engine used here is built for handling rigors generator usage.

10. A-iPower SUA15000EC SUA15000E Generator

The list ends with A-iPower SUA15000EC, an ultra-heavy-duty generator designed to give you reliable and portable power ideal for home backup systems or industrial use. The generator is here to provide you with 12000 running watts and 15000 starting watts of power. The use of a reliable, high-power Twin-Cylinder Engine ensures it’s always at its optimal. The heavy-duty and all-metal construction is put in place to ensure durability.

Another thing, this model uses a maintenance-free brushless alternator for optimal power delivery. It does also use Pure Sine Wave Technology designed to ensure you get clean, stable voltage output ideal for running and charging your sensitive appliances. With its 8-gallon fuel tank, this generator can run for around 7-hours at half load, which is quite impressive. And now, with all those high-end features, its right to say this is a model you can use for commercial business, heavy-duty industrial applications, and also whole home backup system.

Best 15000 Watt Generator [Buyer’s Guide]

You are now one step closer to finding your ideal 15000-watt generator. As I promised, here is a simple, comprehensive buyer’s guide that will help you find the best generator to invest on. Make sure you read all the points as they are all critical.

Generator Type

15000-watt generators can be either portable or a standby unit. The big difference is, as the name suggests, portable generators are easy to transport, and most of them come with wheels and handles. Standby generators, on the other hand, is a one-spot-installation generator; once installed, you cannot move it unless you’re relocating it. Additionally, the standby generators are generally super-powerful and quick in response. They are also automatic, no need for you to go and start the generator. However, they are quite expensive.

Another category is the dual-fuel and single fuel generator. A dual fuel generator will give you the freedom to select between the fuels it is compatible with, be it propane or gasoline, propane, or natural gas. However, due to this addition, the generator is much expensive compared to a single-fuel generator.

Power output

What do you want the 15000-watt generator to power? How long do you want it to run? Those are the first things you need to consider before deciding to go with the best 15000 watt generator.

If you need it to keep your laptop, computer, smartphone, Wi-Fi running, then you’re are good working with a 15000-watt generator. However, if you will be running multiple large appliances like electric oven and microwave at a go then, you need to determine if the 15000 watts power will be enough.

Add all the wattage of these appliances and get the value of required wattage. Remember that starting power is almost double the running power.

Noise level

Yes, you might want a backup generator for your home that means noise isn’t an exception. You need to make sure that the 15000-watt generator you choose operates quietly. These generators have varying noise levels, so be keen on this. Job sites are noisy places; different tools make high decibels, so it’s not a must to go with an ultra-quiet model.

Ease of transportation

Best 15000 watt generators aren’t that big. Most of them are portable. If you need a generator you can use in many different locations for different applications then you need a portable one — a generator with wheels and handles.

Durability

What is the generator parts made of? Are the materials durable? You need to ensure that the generator you decide to purchase is built with high-quality materials that resist corrosion and rust while also offering the best durability. Also, ensure that the construction as a whole is something reliable and robust with a robust protective frame.

Ease of use

One thing that will tell you how easy it is to use the generator is the mean of starting it. Electric start is the best, but the recoil start has also been improved to make it easy for everyone. Apart from that, you need to ensure that adding gas to the gas tanks isn’t a problem. Also, an oil change should as easy is the refilling the tank.

Best 15000 Watt Generators (FAQs)

Q: Do I need to exercise my generator?

A: Yes! It’s simple required maintenance. Generators require scheduled filter and oil changes to ensure you get maximum performance and years of reliable service. Always check the user’s manual for info on routine maintenance procedures. You will also come across some portable models that come with built-in maintenance reminders on the control panel.

Q: How does a generator fuel valve work?

AIt’s a small device which is set to allow or stop fuel from getting to the engine. Always keep the fuel valve open before turning the generator on and directly close it after turning off the generator.

GLOBO TOOLS OVERVIEW

Your best 15000 watt generator is in the list above. With the information, you have read and this list, you should be able to find a model that meets all your needs. Always remember to consider your budget plan. Do not shop blindly as it can lead to overspending. Proper maintenance on the generator will give it better performance and extended life –remember that.

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