Generac Gp5500 Review – Specifications, Features & Many More

The Generac 5939 is a long-lasting portable generator that is powerful enough to serve as a backup generator for your home or a worksite generator while remaining compact enough for tailgating. Generac is a well-known brand of generators in the United States, and its 5939 model is one of its most popular models.

This Generac GP5500 review may be useful for anyone who anticipates all unexpected events, needs to operate outside with emergency backup power, wants to save money on electricity bills, or enjoys camping. This generator is one of the most dependable equipment in my home, and I’m here to discuss its pros and cons and answered various questions related to this generator.

Because it is gas-powered equipment, you don’t even need to be close to your home to use it; only ensure that the fuel tank is full. As someone who works outside the house on a regular basis, I’ve tested several generators, but this one is my favorite because it’s not only powerful but also small and long-lasting. It is one of the best Generac generators. Let’s check the review below!

What Will A 5500 Watt Generator Run?

When shopping for a 5500-watt generator, it’s natural to wonder: what will a 5500-watt generator run? In the event of a power outage in your home, it is commonly assumed that a house of 1200-1300 square feet necessitates a generator of 5000 to 7000 watts.

What Will A 5500 Watt Generator Run

Who Makes Generac Generators?

Generac – Generac generators are proudly manufactured in the United States, specifically Wisconsin, at their numerous manufacturing facilities.

Generac Power Systems, a manufacturing firm with sites in Eagle and Whitewater, Wisconsin, manufactures the engines for Generac Generators. Generac manufactures the engines on-site at its Whitewater factory, while there are contradictory reports claiming some engines are manufactured in China.

Generac 5939 GP5500 – A Hit Or Miss 5000W Generator

The Generac 5939 GP5500 generator has a bad reputation due to a spate of negative complaints about noise levels and broken parts. However, due to its competitive features, it made our list as a competitor.

The Generac produces 5500 running watts/6875 starting watts and can run for up to 10 hours at 50% load. While this is not the highest number on the list, it is not the lowest either. The huge 389cc engine and 7.2-gallon fuel tank contribute to this generator’s low weight of 180 lbs, one of the lowest on our list.

This generator is great for power tools, camping, backup power, and small job sites. One disadvantage is that it is not CARB or CSA compliant, making it illegal to transport to California.

Generac 5939 GP5500 – Specifications

Brand Generac
Output Wattage 6875 watts
Item Dimensions L x W x H 27.5 x 33.5 x 26.5 inches
Item Weight 167 Pounds
Fuel Type Gasoline
Tank Capacity 7.2 Gallons
Running Watts 5500 Watts
Size of hardened steel tube cradle 1 ¼ inch

Generac 5939 GP5500 – Features


The Generac GP5500 generator is tiny yet solid, having a strong steel frame. Because of the strengthened steel construction, it can withstand heavy-duty use and quickly withstand damage.

It has large 9.5-inch never-flat tires that are ideal for rough terrains ranging from backyards to construction sites. Given the weight of the generator, the wheels are a crucial component.

It weighs 180 pounds, which is slightly higher than other versions with comparable power outputs. However, because of the wheels and foldable handle, you can still move it swiftly.

The generator also has an emergency low-oil trigger, which shuts it down immediately when low oil levels are detected. This can also assist to extend the life of the engine and increase the overall durability of the generator.


Powerful Engine

The most significant quality to consider while looking for a generator is, of course, electricity. This one doesn’t let you down. The 389cc OHV engine has a power output of 5,500 operating watts and 6,875 surge watts.

The engine is also notable for having its valves located above the cylinder head. This enables a more compact and streamlined design while retaining all of the power.

Read It: Sportsman 2000-Watts Gas Powered Generator

Noise level

The noise level of the Generac GP5500 is not as bad as many consumers fear. Although it generates some noise, it is quite tolerable. There are around 71 Generac GP5500 decibels, so if you are close to the generator, you will hear it work. There are, however, considerably louder generators on the market.

Ease of use

Despite being the most powerful tool for the money, with a Generac GP5500 oil capacity of 7.2 gallons, it is easy to operate. You can transport general across the territory thanks to the wheels on both sides. There are four common outlets and one industrial outlet on 120 volts that are protected from the elements.

The control panel is straightforward. You can also use the hour meter to see when you can use the generator. When you run out of oil, the Generac GP5500 automatically shuts down. You can operate the generator immediately after filling the fuel tank. Simply turn on the generator to use it. Choose the appropriate wire and connect it to the desired device. In such circumstances, we usually employ the Generac generator:

Ease of use

  • Power outage;
  • Camping;
  • Working outdoors with power tools;
  • To temporarily provide electricity to the house.

Check More: Briggs & Stratton Q6500 Review


The strong Generac 5500-watt RV generator can work continuously for many hours. It weighs 180 pounds and is easy to transport because of the engine’s two wheels. The entire generator is small. It measures 28.75 inches by 26.75 inches by 25 inches.

All of the generator’s details are covered in dependable, high-quality metal to avoid corrosion and allow you to work outside. The gasoline tank has a capacity of 7.2 gallons and can easily supply 10 hours of work when fully loaded.

Low Oil Trigger

Engine splash lubrication is another fantastic advancement. This keeps the engine parts lubricated, minimizing friction and the possibility of damage.

The generator also has an emergency low-oil trigger, which shuts it down immediately when low oil levels are detected. This can also assist to extend the life of the engine and increase the overall durability of the generator.


If you buy it straight from Generac, the Generac GP5500 portable generator costs $729. However, if you purchase it from a retailer such as Walmart, Home Depot, or Amazon, you may frequently get it on sale for less than $700.

The Generac GP5500’s low price is one of the main reasons it is our top option for a portable generator. There are more powerful choices available – some with more capabilities, some more portable – but you’ll almost certainly pay more than $2,000 for the privilege. The power and utility provided by the Generac GP5500 are extraordinarily outstanding value at a price far below $1,000.


Although this model lacks a fuel gauge, the engine shuts down automatically when it runs out of fuel. The hardened steel tube adds to the durability. The device operates for more than ten hours before shutting off. There is a one-year full warranty and a three-year limited warranty.


Customer Service

Finally, Generac is a well-known brand, so you can be confident that you’re getting a high-quality product. They provide a two-year limited warranty and dedicated customer assistance 24 hours a day, 365 days a year.

Knowing you have dependable customer service to rely back on upon the event of a problem might bring you peace of mind. With regular maintenance, a Generac generator will endure a long period.

Read This: WEN 4750-watt Generator Review

High-Quality Fuel Tank

The generator runs on gasoline, and the large tank stores around 7.2 gallons. When half filled, you can anticipate the generator to run for roughly 10 hours.

Diverse Connection Options

A generator is useless if it cannot be connected to anything. The Generac GP5500 has enough connectors to meet a variety of needs. It comes with four 120 volts (20-amp) home outlets. It also contains one 120-volt industrial outlet (30 amps).

User-Friendly Control Panel

This is when you may begin to discover some of the Generac GP5500’s limitations. The control panel is small in comparison to more expensive ones. There are outlets as well as an hour meter that indicates when the generator needs routine maintenance.

Safety Features

All five of the generator’s outlets are covered, protecting them from the elements and preventing curious children and pets from coming into contact with them. Furthermore, the outlets are equipped with circuit breakers to reduce the risk of unwanted shocks.


Generac didn’t go overboard with the outlets on this generator, but they got precisely what they needed for use at home and in the field. To handle power-hungry tools and heavy-duty appliances, the GP5500 includes five three-pronged outlets, four of which operate at 120 volts and one of which can be toggled between 120 and 240 volts.


The generator, however, lacks a 12-volt DC outlet for charging batteries, which can be a concern for contractors that rely extensively on batteries in the field. This generator is not suitable for RVs or road trips since it lacks an RV-ready twist-lock plug.

Check More: A-iPower 5000-Watt Generator Review


Lifting a 180-pound generator onto the back of a truck is impossible, but the GP5500 is built to travel. The sturdy steel frame incorporates a fold-down, lockable handle for hauling it around the yard or work site. Meanwhile, the wheels are made of strong rubber that does not require inflation, is practically hard to puncture, and rolls quickly over any terrain.

Generac 5939 GP5500 – Pros & Cons

  • To protect your investment, the Generac 5939 GP5500 comes with a 2-year limited warranty.
  • Generac’s OHV engine with splash lubrication provides long engine life.
  • Low-oil level shutdown automatically protects the engine from damage.
  • As long as you have adequate gasoline, this Generac 5939 5500 portable generator can run continuously for a long time.
  • The noise level of this Generac portable generator may be a little too high for you.
  • It is not CARB or CSA Compliant.



Is Generac a Reputable Brand?

Yes, Generac is a reputable portable generator maker. They provide 24-hour customer support and reasonable warranties on the majority of their products. The Generac GP5500 is covered by a two-year manufacturer warranty.

How to Start A Generac Gp5500?

The link to a YouTube video given below will help you to learn how to start a Generac generator:

How Many Decibels Is A Generac Generator?

The Generac generators we sell produce roughly 66 dB when measured at 23 feet – a normal distance for testing generator sound output – which isn’t exceptionally loud. That noise level is comparable to 68 dB for air conditioners 20 feet away and 70 dB for washing machines at the same distance.

Is the Generac GP5500 Loud?

One common complaint about this generator is that it is louder than other kinds. It has a decibel rating of around 71. This is noisier than usual. While this isn’t a problem for short-term use, you shouldn’t rely on this loud equipment on a regular basis.

Why Choose Generac?

The Generac GP5500 is a low-cost, easy-to-use engine with enough power to keep you going during power outages, outdoor jobs, and camping. It is dependable and can run for many hours with a full tank. The generator has several advantages, but one of my favorites is its portability.

Alternate Generac Gp5500

1. A-iPower AP5000V 5000-Watt – Quietest Gas Powered Portable Generator

A-iPower AP5000V 5000-Watt – Quietest Gas Powered Portable Generator

After some research, I discovered that this generator had excellent build quality, quality, and reliability, with rust-resistant metals and powders used to produce matt finishing.

This machine, along with all other 5000w generators, is very simple to construct and use; the control panel provides access to everything, but its capabilities are restricted; it lacks USB connections, reset buttons, eco mode, and other unusual features.

Aside from that, it is one of the quietest 5000w generators I have ever seen, outputting just 68dB from a distance of 25 feet and capable of being placed 80 feet away for total silence.



2. DuroMax XP5500EH Electric Start-Camping Generator – Best Value

DuroMax XP5500EH Electric Start-Camping Generator – Best Value

DuroMax XP5500E Gas Powered Portable Generator-5500 Watt delivers exactly what it promises. The DuroMax XP5500E generator boasts a strong engine with remarkable specs. The engine of this generator is an OHV engine with a displacement of 224cc. With these engine specs, your generator easily produces 5500W of electricity.

MX2 technology is also included in the DuroMax XP5500E generator. As a result, it produces enough power while using less gasoline. Furthermore, this technology assures that the generator supplies 120V and 240V electricity to the connected appliances via its receptacles. However, the supplied voltage is determined by the voltage requirements of your appliances.

Another well-thought-out aspect is safety. Your unit has a low oil shutdown that ensures your device shuts down automatically if the oil level drops to a critical level. This protects the engine from harm, extending the life of your generator.

Detail Analysis: DuroMax XP5500EH Review Power Boost Technology



3. WEN 56475 4750-Watts Portable Generator – Best Inverter Model

WEN 56475 4750-Watts Portable Generator - Best Inverter Model

The WEN 56475 Portable Generator is by far the most durable and compact portable generator on the market, providing sufficient power to keep you running if the power goes out.

In addition to providing emergency power, the WEN 56475 Portable Generator is small and takes up minimal storage space. You may also take it anyplace you need electricity, such as traveling, taking a road trip in an RV, holding a wedding reception or barbecuing, or even doing home maintenance tasks.



4. Briggs & Stratton Q6500 Quiet Power Series Inverter Generator – Best Portable

Briggs & Stratton Q6500 Quiet Power Series Inverter Generator – Best Portable

The Briggs & Stratton Q6500 Quiet Power Series Inverter Generator generates up to 6,500 Watts of power. Its tremendous performance is owed to its 306cc high-efficiency engine.

This integrated engine not only provides adequate power but also ensures that the electrical supply is more reliable for powering your demanding appliances without the generator making excessive noise.

Aside from the powerful integrated engine, this device has a 14-hour run duration due to a highly efficient engine and a huge fuel tank.



Generac Gp5500 Review – FAQs

What Can You Power With a Generac GP5500?
This generator is modest in size, yet it packs a tremendous punch. It has an operating wattage of 5,500, which is sufficient to power a variety of appliances and automobiles. A half-tank can provide you with up to ten hours of electricity.
How Big Is the Generac GP5500?
This generator is quite little. The engine’s valves are located above the cylinder head, resulting in a more compact design. Despite its diminutive size, it’s a substantial model, weighing 171 pounds—significantly more than competitors, which average around 130 pounds.
Is the Generac GP5500 Portable?
Despite its weight, this generator is tiny enough to be portable. The no-flat tires make it simple to move. The generator may be rolled across difficult terrain, including building sites, without fear of damage.
Can You Add an Electric Start to Your Generac?
One disadvantage of the generator is that it requires a pull start rather than a simple push button to start. Generac does not sell kits or add-on accessories for converting the pull start. Also, keep in mind that any DIY modifications would very certainly void the warranty.


To Sum Up

The Generac GP5500 should be a fantastic choice for residences, recreational use, and small-to-medium companies if you’re searching for a portable generator that just works. It’s a little loud, but it’s more powerful than other generators of its size, very easy to operate, lasts a long time, and is portable.

Furthermore, it is substantially less expensive than many other comparably powered models, making it a good value for money. The Generac GP5500 is an excellent portable generator in our opinion.

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