Generac GP5500 Review

Updated November 18, 2020

If you’re looking for a reliable and portable power source to help you survive power outages, the Generac GP5500 portable generator fits the bill perfectly. 

Whether you’re a homeowner who just wants to make sure that they have enough backup for emergencies, or a big contractor with a heavy-duty power needs, you won’t feel disappointed using this gas-powered generator.

Designed by Generac Holdings, a well-known generator brand in America – the Generac GP5500 offers many coveted features such as a heavy-duty steel base frame, large fuel tank, gas-powered 389cc OHV engine with splash lubrication, as well as foldable wheels and handles. 

This reliable power-generating machine can easily produce an impressive 6875 watts starting and 5500 watts running power, which is strong enough to fire up almost all RVs or provide safe back-up to the house for many hours. 

It can run several household appliances at a time, such as ACs, refrigerators, power tools, alongside sensitive equipment like heaters, lights, and computers, and more.

Let’s dive into the Generac 5500 review to learn more about it!

Generac GP5500 Review

Fuel Efficiency

The Generac GP5500 portable generator is designed with a straightforward approach to run only on standard gasoline rather than propane. However, there’s no known method to convert GP5500 into a dual-fuel generator, so consumers have to rely on conventional gasoline. 

Although this power-generation machine doesn’t work on propane, the traditional gasoline does provide an easy and cost-effective option. 

With an impressive 7.2 gallon fuel-tank, this Generac gas generator provides an optimal run-time of 10-hours at half load, which is perfect to power several smaller tools and equipment or if you’ve got a very particular, precise task.  

Generac GP5500 Noise Level

Though portable generators are known to create a bit of noise due to their motorized parts, you’ll not be able to detect the sound of this portable generator.   

This gas powered generator includes a sheathed motor using the hardened steel framing. Although it gives the unit long-lasting durability but also adds to the sound level generated by the GP5500.   

But you don’t have to worry about that since Generac has countered this ‘portable generators noise level issue’ with this gas-model by using a low-tone muffler, which is designed specifically to lower the noise levels generated during operation. 

In addition to that, the unit has a motor, assisted by engine mounts (also known as motor mounts) at several places to lower the vibrations as possible and keep the operation consistent and smooth. 

All these features have played a part to decrease the noise level of this portable gas generator and paved the way for it to run successfully and quietly at about 71 decibels, which is slightly more than the normal conversation.


7.2 gallons
120 V
6875 W
Noise Level:
71 dB
5500 W
Power Source:

Pros & Cons


  • Comes with a first free engine oil.
  • Extremely durable.
  • Steel framing.
  • Highly powerful.
  • Easy-to-use.
  • Value-for-money.
  • Low-oil shutdown.
  • Fold-down handle.
  • Never-flat wheels.


  • No CARB and CSA complaint.
  • Basic control panel.
  • Recoil system may be difficult to use.


Though the generator is laden with many impressive features, it’s preferred for its portability. 

Weighing in at only 180-pound weight, the GP5500 gas-powered generator is specifically designed for traveling. 

Due to its extremely lightweight and easy portability, it is also known as the Generac 5500-watt RV generator.  

For more RV generators, make sure you read our best generator for RV reviews

The steel framing of the generator includes a folding handle that can be locked, providing you the opportunity to tow it across different terrains.     

In addition to that, this gas-powered generator also has wheels made from rubber and won’t require inflating. It makes the unit extremely durable and reliable with minimal maintenance involved. 

That’s not it! 

Besides the internal part, the outer part of the GP5500 generator also helps in its portability. 

Especially designed and made from steel, this unit is perfect for people who work either in heavy-duty construction sites or in other harsher conditions.     

Run Time And Power

With an impressive 389cc OHV engine, the Generac GP5500 portable generator offers dual power options to choose from, i.e., 240v and 120v.

Additionally, it provides a remarkable 5500 watts running power and 6875 watts starting power. 

And it comes with a traditional pull-start mechanism. 

Moreover, the Generac GP5500 gas-powered generator can efficiently run for about 10-full hours with the full tank at half-load and fuel consumption of about 0.72GPH. 

You can increase the generator’s runtime by a couple of hours if you lower down the total load. 


All Generac portable generators have warranties. The Generac GP5500 provides a warranty period of 2 years. 

But you should through the manual or inquire from the seller about the warranty period when you’re making a purchase. 

That’s because Generac offers a limited warranty on their products, which may not include all generator parts.  

Generac 5500 Generator Customer Reviews

The Generac GP5500 is one of the most powerful and durable gas-powered portable generators with increased efficiency and running watt to run as a credible construction site generator, home back-up generator, or tailgating.       

Consumers report that the generator is easy-to-assemble and provides an exceptional starting and running watts power and performance. Most users loved the fact that the GP5500 starts operating effortlessly, with just one or two pulls.  

Unlike many other gasoline generators, this one provides a breeze startup so that you won’t have to wrestle with it for hours to get it going. 

Some users report that it was their only power source at home during power outages for over four months. They said they ran the Generac GP5500 portable generator for more than 10 hours in a row without any problem.    

One consumer particularly mentioned how the GP5500 generator was highly useful for her family during the devastating hurricane Irene. It’s highly reliable and an excellent back-up power option, especially during emergencies.   

Many consumers have applauded the unit’s power supply capacity that offers a fantastic 6875-watt starting and 5500-watt running power. They’ve claimed that this Generac model powers up quickly most of the household appliances such as ACs, freezers, kitchen appliances, etc. 

One buyer claimed that the unit easily powers most of his equipment, including computers, laptops, printers, motors, etc., without causing any damage during an extended power outage.  

Though a few customers said the unit was comparatively noisy, others were happy due to its quiet operation. 

What Will A 5500 Watt Generator Run? 

The Generac GP5500 portable generator offers about 23amps in 240v and 45amps in 120v. 

In other words, a 5500-watt portable generator can effortlessly run almost all essential household appliances such as air conditioner, fridge, radio, TV, fan, lamp, hairdryer, electric heater and blanket, water pump, among other things. 

In short, this power-packed gas generator can power any appliance with a wattage rating under 5000watts.  

Our Verdict

If you’re searching for a highly portable generator with increased performance and little noise, the Generac GP5500 gas-powered generator is a perfect choice. It is ideal for recreational use, small-to-medium businesses, and homes. 

Although it generates a bit of noise, which is a little more than everyday conversations, it is still a far better option to go for due to its immense power.

Besides, it’s highly easy to operate and use, easy-to-move, and runs for a very long time. 

Moreover, what’s interesting about this generator is that it’s considerably cheaper than most other similar models; thus, it offers value-for-money.

We hope that our Generac 5500 review has cleared all your queries and doubts about this product. All in all, it’s a must-have portable generator.