Best Natural Gas Generator Reviews

Updated November 5, 2020

There’s no doubt that diesel powered generators rule the roost in the generator world. Recently, however, there’s been a new kid on the block stealing all of the attention, and that’s the natural gas powered generators.

So far, they have proved themselves to be dependable, cost effective, easy to use, and best of all, much more considerate to the environment.

Apart from all of these added benefits, generators that run on natural gas aren’t too different from your traditional generator.

Even so, we’ve written a handy buying guide so you know all there is to know about natural gas generators before you make that all-important purchase.

Plus, the pros and cons of some of the best generators on the market.

Let’s get started!

Best Natural Gas Generators

1 Wen - 56180 1800-Watt Portable Generator
Best For Low Budgets
Wen 56180 1800-Watt Portable Gas Generator
Hide other buying options

Best For Higher Budgets
2Durostar DS4000S Natural Gas Generator
Durostar DS4000S Portable Generator
Best For Higher Budgets
Durostar DS4000S Natural Gas Generator
Hide other buying options

3 All Power America - APG3014G 2000 Watt Portable Generator All Power America APG3014G Natural Gas Generator
Hide other buying options

4 Westinghouse - WGen7500DF Dual Fuel Portable Generator Westinghouse WGen7500DF Natural Gas Generator
Hide other buying options

5 WEN - 56225i 2250-Watt Gas Powered Portable Inverter Generator
Best Overall
WEN 56225i Gas Powered Inverter Generator
Hide other buying options

6 Generac - 5734 GP15000E Gas Portable Generator Generac 5734 GP15000E Natural Gas Generator
Hide other buying options

1. Wen 56180 1800-Watt Portable Gas Generator

  • 1.1 gallon gas tank.
  • Pull start.
  • Multiple AC120V and 12.5A three-pronged outlets.
  • Bonus 12DC outlet. 
  • Low oil shutdown system safety feature and spark arrestor.
Best For Low Budgets
Wen - 56180 1800-Watt Portable Generator

If you’re looking for a natural gas powered generator that won’t break the bank to buy, then you’ve found your perfect match here.

Despite its affordable price, this nifty little machine is still capable of running at a maximum output of 1500 running watts.

This means it can help provide power to the appliances in your home during an outage or give your gadgets a boost of energy when you’re out and about in the wilderness.

Equipped with a number of AC120V outlets, a 12.5 three pronged outlet, and a 12V DC outlet, you’ll always be able to hook up to this multifaceted generator.

And, there’s no need to worry about the WEN 56180 overheating on you as it has an automatic shut-off feature for when the engine oil is running low.

What’s more, if you’re looking for a generator that will be your buddy on those remote camping trips, this is your guy.

With an in-built spark arrestor, you can take the WEN 56180 portable generator into national parks and forests.

You’ll truly never find yourself without power.


19.9 x 15.9 x 17.1 inches
120 V
1800 watts surge and 1500 watts running
Noise Level:
65 dB
7.5-hour run time at 50% load
Power Source:
Natural gas


  • CARB compliant.
  • EPA III compliant and can be used in all 50 states.
  • Easy-to-read manual included.
  • Very fuel efficient.
  • Portable and lightweight.


  • Quite loud compared to others on the market.

2. Durostar DS4000S Natural Gas Generator

  • It comes with wheels so you can move it easily whilst doing something
  • It is affordable and cheap
  • It can power a lot of things because of it’s big engine size
Best For Higher Budgets
Durostar DS4000S Portable Generator

This generator is unique as it does not have a plastic engine cover as a lot of modern generators have. It is fitted with a powerful 208cc engine that puts out about 7 horsepower which is enough to power heavy grade equipment. 

Because of the big engine, there is a 4 gallon fuel tank that can run this generator for more than 12 hours. It is fitted with an hour meter. Wheels don’t come standard with this generator but can be bought after. 

The generator features many safety restrictions like low oil shut off, a muffler that makes it as quiet as it can but it is still louder than some generators. 

Whilst buying this generator, you will also get a 3 year warranty on every part of it. It will help you out during power outages and you won’t have to  worry about not having electricity. Two 120V and one 120v 30A outlets are a standard on this model.


24 x 17 x 17 inches
120 Volts
4000 Watts
Noise Level:
The noise is slightly higher at 69 dB
33 amp
Power Source:


  • Has a big fuel tank that can power it for lots of hours
  • Reliable and simple to use
  • Comes with a manual which explains everything in detail
  • Can power heavy duty equipment


  • It is really heavy and needs to be transported by a vehicle
  • It also doesn’t have a start button but a pull bar that can rip off easily

3. All Power America APG3014G Natural Gas Generator

  • 1.3 gallon fuel tank.
  • 1 x 12V DC outlet.
  • 2 x 120V AC outlet.
  • Recoil manual start.
  • Automatic shut off features.

Affordable, quiet, and convenient are just some of the words that spring to mind when we talk about the All Power America APG3014G.

As a portable generator, this is perfect for taking on a camping trip to power lights or even a small fridge.

At home, it’s great to use as a backup generator for smaller appliances such as your freezer to stop your food spoiling during a blackout.

Roughly the size of a microwave and weighing around 55 pounds, you won’t have any problems moving this generator to where you need it to be. SImply hoist it up using the convenient handles and pop it into place.

Another huge benefit to this natural gas generator is its noise level output. No louder than your dishwasher, you should be able to use this on a campsite without bothering your neighbors who are a few feet away.

An added luxury to this affordable generator are its safety features that ensure that it is never overloaded with power. These include a low oil sensor that shuts off the generator if it’s low on oil and a spark arrestor.


19 x 15 x 15 inches
120 V
2000 watt surge and 1400 watts running
Noise Level:
68 dB
9 hour run time at 50% load
Power Source:
Natural gas


  • Made by a reliable and well-respected brand.
  • Include a one year warranty with every sale.
  • Safety features include automatic shut-off and spark arrestor.
  • Compact and easy to transport.


  • Very sensitive to overloading.

4. Westinghouse WGen7500DF Natural Gas Generator

  • 6.6 gallon fuel tank capacity.
  • 420cc OHV engine.
  • Transfer switch ready.
  • Remote electric start key fob included. 
  • Duel fuel operated.

Perhaps one of the most powerful natural gas generators on the market, the Westinghouse WGen7500DF has been taking the world of generators by storm.

Powerful enough to supply power to your home during a blackout but lightweight enough to be transported to wherever you need it to be, this generator offers users the best of both worlds.

Its user-friendly nature is what draws most buyers to this Westinghouse generator. Not only can you start the motor at the touch of a button, but even the most novice of users will have no problem operating its straightforward control panel.

Even better, for those times that you find yourself out of reach of a natural gas source, this powerful unit can also be run on propane. Simply click the transfer switch button, even while the generator is operational, and you’ll be good to go.


27 x 26 x 26 inches
120 V/240 V
9500 watt surge and 7500 watts running
Noise Level:
64 dB
16 hours run time at 50% load
Power Source:
Natural Gas


  • Easy-to-use push button electric start.
  • Switch fuel sources while the unit is operational.
  • Long running time.
  • Low-maintenance unit.
  • Portable.


  • Runs less effectively on propane compared to gas.

5. WEN 56225i Gas Powered Inverter Generator

  • 1 gallon fuel capacity.
  • 4-stroke OHV engine.
  • Silent operation features.
  • Parallel connection capability. 
  • Eco-mode to maximize fuel efficiency.
Best Overall
WEN - 56225i 2250-Watt Gas Powered Portable Inverter Generator

The WEN 56225i is an all-encompassing natural gas generator. It’s not only lightweight and compact, but it hardly makes a murmur when you use it, and you won’t need to tend to it too often.

It’s perfect for the keen campers amongst us and at home DIY-ers looking to use their tools on the go.

For the environmentally-conscious amongst us, you can activate eco-mode to make the generator even more fuel-efficient and to prolong engine life.

While it may not be the most powerful generator on the market, it’s parallel connection feature allows you to double its output when you hook it up to a compatible unit.

You’ll also get a good six hours of runtime if you’re running a half load with a full tank.

A huge advantage to the WEN 56225i are its outlets. Like many other natural gas generators on the market, it features the usual 2 AC three-pronged outlets.

What sets this unit apart is its 2 DC outlets in the form of USB ports. Perfect for the tech-savvy camper.


19 x 11.5 x 18.2 inches
120 V
2250 watt surge and 1800 watts running
Noise Level:
57 dBA
6 hour run time at 50% load
Power Source:
Natural gas


  • One of the quiet generators on the market.
  • 5V USB ports for modern appliances.
  • Parallel connection feature to share wattage between generators
  • Indicator safety lights for low oil, overload, and output.


  • Pull-start can be challenging to operate for the first-time user.

6. Generac 5734 GP15000E Natural Gas Generator

  • 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.


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


  • 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.


  • Setting up this generator can be complicated.

Natural Gas Generator Buying Guide

Inverter VS Traditional

While traditional generators were once the unit of choice, the natural gas inverter generator is starting to take over in terms of popularity.  While inverted generators and conventional generators provide the same service, they deal with electricity differently. 

An inverter generator will produce electricity in three phases: high-frequency AC to DC and back to a stable AC current. 

A traditional generator, on the other hand, will only produce AC electricity. 

Both types of generator have their pros and cons. 

Inverter generators are typically more expensive than the more traditional devices. However, they tend to have a longer shelf life, have a lower noise level, and run more efficiently. This could mean you end up saving money in the long run.

Traditional generators come at a more affordable price, but you may have to spend more on maintaining them in the long-term.



It’s always handy to have a portable natural gas generator at your disposal. It’s great if you’re heading off on a camping trip or need an extra boost of power for your work tools. Portable generators are usually equipped with moveable wheels and fold-in handles, amongst other features that allow you to move the generator with ease. 

It’s also important to consider the generator weight if you’ll be moving it around with you a lot. Natural gas generators come in a variety of sizes, and smaller doesn’t always mean less powerful. 


People who live in an area prone to natural disasters and frequent blackouts are more likely to invest in a standby generator

This is a type of generator that is permanently mounted outside your home, business, or office that instantly powers the building in the event of a blackout. This is an easy way to prevent prolonged power outages.  


Every natural gas generator that you find on the market will have different capabilities when it comes to supplying power. Finding the right generator for you all depends on what you’re going to use it for. 

All generators have dedicated output ratings: an output capacity and a surge capacity. 

The output capacity is the maximum amount of power the generator can supply on a day-to-day basis, whereas the surge capacity represents the maximum output of the generator before it will overload and shut down.

To find out how much power you’ll need from your generator, you should make a list of all of the items that you want to be powered at the same time. 

You can then find the running watts of each appliance and add them all together. This figure will represent the minimum wattage that your generator needs to produce. To be safe, it’s always worth adding another 2,000 to your minimum.


The size of a generator is usually dictated by what you’ll be using it for.  If you’re hoping to go camping with a portable appliance, then it’s better to choose the smallest generator on the market. This is because a small natural gas generator is much more portable and easier to carry around with you. 

Medium-sized generators are a great option to use as backup generators, as they will happily supply power to a number of household appliances. 

Although the size of the generator isn’t always an indicator of its power capabilities, you will find that home generators are larger. This is because they tend to be permanently fixed in one location, and it’s not necessary to move them around. 


Like all other generators on the market, natural gas generators come with a variety of outlets that suit most appliances we have today. 

The majority of generators come with at least one, usually two, 120-volt wall outlets. These will suit any device that needs to be plugged in using a standard three-prong wall plug.

Some of the more modern generators on the market now come complete with USB ports allowing you to plug in your phone, camera, and other appliances without a wall plug.

Powerful units that power an RV or an entire home may come with an additional locking 120/240 volt outlet or a 30-amp outlet specifically designed to run RVs. 

It’s important to check the type of outlets a generator provides before you settle on one to buy.


From unexpected blackouts to planned camping trips, generators can come in handy in all sorts of different situations. 


If you’re looking to provide power for your entire house, you’ll need to explore the world of natural gas whole house generators.  Before you buy your generator, you need to work out how much power your house requires. 

In severe weather or natural disasters, you may need to run everything in your house on your generator, in which case you’ll need a unit with a huge power output. 

Luckily, there’s a huge number of home gas generators on the market, so you shouldn’t have any trouble finding one to suit your needs. 


Emergency generators generally have a lower power output than home gas generators as they are used to power a selection of home appliances rather than the whole house. 

These tend to be a more affordable option if you want to keep essential appliances, such as the fridge running during a power outage.


If you enjoy camping out under the stars in remote locations, then a generator can be an invaluable piece of kit to take with you into the wilderness. Camping generators can help you charge up any device such as your phone, your camera, or even a fan to keep you cool during those hot summer nights. 

Portable gas generators can be especially useful in camping situations. Do remember that some campsites will restrict generator use to certain hours, and some even ban the use of them completely.

Natural Gas Generator Cost

Despite being an emerging product in the generator market, you can already find natural gas generators at almost any price point. 

Some of the smallest and least powerful generators can be found for just a few hundred dollars. 

However, if you’re looking for something long-lasting and powerful to come to your aid in your time of need, you’ll want to spend at least $1,000, if not more. 

For powerful generators that can supply your home, expect to spend at least $3,000. 

Luckily, natural gas is amongst the cheapest alternative power sources in the world, which means running the machine will be more than affordable once you’ve paid out the initial purchase amount.

Our Verdict

We understand that the world of gas-powered generators can be a difficult place to get your head around.
Hopefully, this natural gas generator buying guide will equip you with the right knowledge to make the best decision for you.

Ensure you know exactly what size generator you need, how much power you require, and the noise level you prefer before you make your purchase.

Feel free to browse through our recommended natural gas generators to see if any suit your wants and needs.